OMG, even the producers of Eastenders couldn’t produce an end of year ‘cliff hanger’ this good. Just when we thought you might have cracked it along came the ‘doof-doofus’ (Rob’s closure piece). More excited for part 2 than I am for anything on Christmas TV this year! Superb chaps!!!
Rob are you and Chris available for Weddings, Funerals and Bar mitzvah’s in the New Year 😂, your both look proper perfect in Chauffeurs caps , Happy New Year 👍🏻.
I think Chris is going about it in exactly the right way, but I am sure the ECU is protected against polarity mistakes, I have learnt that it is best to do as many simple checks as possible and not to assume the most complex part of the problem is causing the fault. with a car that did work until it spent a long time unused it is very unlikely the ecu is the fault. Check the pumps are running, check the fuel pressure sensor, check the temperature sensor, a corroded connection could be seen as a high resistance which may make the temp guage go to hot, unplug it and see what happens, check the ecu earths etc etc, I am probably repeating what you already know, but it bears repeating! Every time I assume a fault is a difficult one it turns out to be somethiung simple! Phil
Unfortunately it wasn't ECU was burnt out most likely someone put way to much power in it I do know tho cars do have a battery charger which you can plug in if the car isn't used that much to stop the battery from going flat.
Wrong, forward a few episodes It was the ECU that was at fault, burned out due to as Chris states some numpty connecting the battery leads the wrong way round ☹️☹️☹️
Just a possible hint - as know from dealership experience of messing up battery swaps that there is a battery management ecu hidden behind the left hand (starter battery) that can get fried if you attempt to jump start direct to terminals or as in this case wire up wrongly - probably not the problem but just an idea of something else to eliminate. Also you will be aware post battery changes that you have to drive the car for a few miles so it can reset all the various computers e.g. steering, suspensions, windows, etc etc - There is a very specific procedure on what to do pre removal on steering position, brakes, etc etc. I heard the dealer saying something like over 100 sensors on a continental that gets reset post battery change. Enjoy the journey.
I agree with it having a little ecu for batterys, especially as you said it's bmw parts, after watching salvage rebuilds for a while I decided to clean up a few cars, I have just got a BMW from that year and noticed the battery has its own little circuit board, But what I would want to suggest is, could the temp wiring be shorted so when power on its getting full 12v therfore the temp skyrocket and also causing electrical issues so you can't read the ecu?
Polite observations! If this Bentley has been sitting for some time, and it has, and the fuel gauge is showing almost empty, put in a full tank of fresh petrol. One gallon of fresh gas isn’t going to cut it! Next, put in a set of fresh spark plugs. Are the existing ones actually sparking? Is there coolant in the radiator? Fresh coolant would be nice. Oil. What are the current oil levels? Battery. A fresh Varta battery I am sure would make a WORLD of difference! Good luck!
The Mike Ed friction was just for the TV, however, little did we know Brewer was a bit of a plonker off screen, ultimately Ed is a gentleman through and through…!!
Often ECU's are designed to have a single high current protection diode on the pcb to product the input from reverse polarity, often this will blow but in doing so it protects the rest of the board. There will possibly be other components on the input side too to protect against load dumping which could have failed due to a surge. Might be worth having someone familiar with pcb level work to locate and check the integrity of the diode etc. BBA-Reman might also be able to help with this.
If it is possible to examine the ECU PCB, it would be worth noting, that there could be several SMD Fuses on the PCB which are present to protect the 'delicate' components - such as the ICs and Main Microprocessor. These SMD Fuses will have an "F" designation, and can be checked with a DMM. I have repaired many electrical items with Microprocessors, just by doing this, replacing the blown SMD Fuses on the PCB. I hope that this helps.
Reverse polarity protection doesn’t burn down because its usually designed to do job without any drama. What can burn down albeit very rarely is usually TVS diode which is there to protect circuitry from over voltage. However they are also designed to sustain quite a bit of hammering and will usually burn your fuse way early before throwing the towel themselves. Usual failure sources for ecu which has some age are capacitors (electrolytic or tantalum) which can fail due age or temperature and short-circuit, resulting cascading failures of all kind of components down and upstream. In which case new ecu is more economical option.
yes and if preceded by a fuse or self resetting fuse it could protect the ecu or leave it open for a simple repair. I bought a hardly used whirlpool expensive dryer off ebay for 50 quid and lo and behold there was a wrong value fuse under the top which I replaced with a higher value one, it's still working 10 years later...I wouldnt be too disheartend at that point..
I've had a bit of experience with arnages. I once had one intermittently overheat and the car would go in to limp mode and then turn off and cut ignition until it cooled. If yours thinks it's overheating pegging the gauge immediately it will not let it turn over or start.
I have no knowledge of these cars ,but I agree the ECU is seeing the temp gauge in the red and the safety has kicked in and disabled it. I also had a thought the ECU has a fuse ,if that's blown there will be no communication.. Actually second thoughts ..The scan tool is communicating so maybe I'm wrong with the ECU fuse
when the ignition is switched the ECU sends a temp signal to the cluster. if there is no input it will max out. this is how it's done on all makes with a bosch ecu. the ecu is just not communicating at all
And this is why I hate computers on car's I am an old school retired mechanical engineer the more electronics you put in a car the bigger the headaches become .Happy new year lad's.
Some of my fave bits when Chris goes through his thought process to address an issue, most you just see on the tools but hearing the process of deduction and possible issues is awesome and helps peeps learn. GUYS YOU ROCK
Just some tips.. sometimes it is as simple as checking that the engine ECU power supply is ok, there is typically a dedicated fuse(s) for the engine side electrics, sensors, etc. Could also just send off the engine ECU to ECU specialist to verify it functions well, before attempting to source another which will need recoding, etc..it may come up to have no issues at all.
It's a 6.75 litre V8, which was the standard motor used in Bentleys and Rollers in the 60s/70s/80s. The one you've got is a turbo charged Arnage T, which is quite a rocket ship. Enjoy it, once you get it running.
I think you've got an Arnage T there, which is the high output variant (450bhp). It certainly has Arnage T alloys. Lovely car and have always wanted one. You may find it is a VW ECU, as I'm pretty sure they had purchased Bentley by then. The key looks like a VW-style key, rather than BMW. The motor is very simple and originates from the 1960-1970s Rolls Royce 6.75 V8 unit. I am almost certain it is pushrod rather than overhead cam. If anyone can fix it, you guys can!
Bit of a back story on VW and BMW. BMW thought they were buying Bentley with Rolls Royce as they were REALLY after Bentley but VW had sussed it was a separate purchase. So BMW didn't get what they were actually after ending up with RR and VW got Bentley.
@@1chish other way round. VW were buying RR & Bentley. But BMW sneaked in and bought the RR car rights from Rolls Royce aero engines (as the car company didn’t own the rights to the name). BMW were co developing an aero engine with Rolls Royce at the time. VW paid a lot of money thinking they were getting Rolls Royce, but just got the factory and Bentley.
Rob, you get all excited about a fiesta starting for the first time. I hope you’re sitting down when this one finally fires up! Good luck with it guy I really hope you get a result here..🤞
Rob, Chris - Thanks for posting and good luck with the car - If you are interested in the BMW-VAG connection it goes as follows, Rolls Royce cars (which also made Bentleys) was owned by Vickers. They sold it in the 90s and there was a battle between BMW and VAG - VAG won the actual company and factory, but BMW were able to separately buy the rights to the Rolls Royce name for cars (Rolls Royce aero engines always owned the Rolls Royce name and historically allowed the car company to use the name under licence). Prior to the sale, Rolls Royce used some BMW parts like engines. After the sale, VAG had the factory but could only use the Bentley name. VAG then started to get rid of all the BMW parts (including engines) in the Bentley cars. Bentley under VAG went back to the old 6.75 litre V8 engine that you have in your car. BMW built a complete new factory to make Rolls Royces, starting from scratch and using BMW parts. That's why your car has VAG ECUs (although it might still have a few BMW parts that they hadn't got around to replacing). As others have said, the engine design is very old and pretty reliable, but of course it now has loads of electronics attached for performance, emissions etc. Good luck - hope you get it to run.
I can listen to rob and chris talk about cars all day, they explain things in simple terms for people like me lol ..hope you get that beauty up and running and make a nice profit lads 😀
I live 2 mins away from Bentley in Crewe, used to work there on the maintenance and saw these getting built everyday. Keep at it guys you will crack it.
Well, I never expected to see a Bentley on the channel, but I'm really glad you have one. I know most of us will never have the opportunity to own one, but it's a great example of even expensive high end cars can have mysterious faults too. I sincerely hope it stays on the channel, as it's going to be interesting to see of you can get it running.
This is a really good one! If anyone is going to persevere and get to the bottom of the problem it’s you guys. It’s amazing what small issues do bring modern cars to a halt and are actually easily fixed. Can’t wait to see part two!
That’s a cracking car guys. The team at Classics Monthly have been running an earlier Bentley and have established contacts with several specialists. They are based at Cudham in Kent. Long shot but they might be able to offer some help. 👍
Really hope you can sort this one boys , very impressive car ! I love that your oit of your comfort zone , albeit you can give it back ! The fact your good enough to know when to walk away when its too risky , shows discipline and good business sense ! I tip my hat to you both , love the content keep it coming 👍
You can have the ECU tested for about £50 and they can rebuild, reload the data, etc. Might even be a swap out, if there's one available. Send it away, wait about week and get it back tested, fully working.
Nice video proving what I have always said that Bentleys are such a great car for the home enthusiast who, with a few tools and little specialist knowledge, can make all necessary repairs! Hope you will sort this out and make a fortune because it always favours the brave! I have wanted a Continental for years but the head always overrides the heart and I never will!
I have been watching for a long while now. Since Chris wouldn't have a bar of the camera. It's amazing and fantastic to see Chris come out of his shell and get in front of that camera
Rob, Chris you’ve made my day, I really wasn’t expecting to see a video from ye this week. Thought you’d both be enjoying a much deserved break - I just know you’ll get that Bentley started and back on the road. Seasons greetings to you both!
Absolutely love your videos. Rob and Chris are like a married couple without the rows! Chris is so laid back he’s almost comatose. 😀 Please keep the videos coming, nice to see this Bentley, something a bit different to look at.
Merry Christmas guys, thought it was comical with Rob sitting in the car and beeping "Chris come over here" the Bentley mindset has already kicked in. The battery terminal damage suggests exactly what you thought, reverse polarity jump start attempt.
Arnages are my favorite body style of the Bentleys; seriously a nice, clean ride. I can't modify my truck until it's 25 due to emissions we have here in Texas in some counties, but always thought it would be fun to have one of these V12s in it as it's not a great deal a larger motor than the 6L already in it, and the weight is also about the same between these HEAVY cars and a full size Silverado. Hope y'all can make some progress on it and continue with the project, that would be plumb neat.
The engine is the old RR/Bentley 6.75 litre V8, originally made in the fifties. updated and turbocharged. It was always a great engine and is still in production for the Arnage.
Hope you had a fantastic Christmas guys. I absolutely love the Arnage (it's a V8 by the way). I thoroughly enjoyed this video and the investigation work. Chris is a top mechanic. I'm sure you'll get it started and I'm looking forward to it!
If that was here in Louisiana we would have changed out for a LS Chevy swap and be done with problems forever on that car. The old boys need to learn to think outside the box once in a while why me and old Elmer can change that out in one weekend and have that car on the road by Monday morning in time to get to work at the feed mill. Bloody hell mates chip chip cheerio and all that .😂
My XJR hated being low on fuel. Always ran happier with at least half a tank of fuel. What i mean is a empty fuel tank can produce condensation which can end up in the fuel system. Some of these cars will not start with a door open. Do you have to cover the brake for it to start ? . Anyway hope you get it going soon and i cant wait to hear that stunning piece of engineering running. Great car.
Just to let you know guys this is the 5pm video we thought the time wouldn’t matter today. A lot of the running gear around this car is bmw including all the breaks cooling systems etc however after a bit of searching online with the part number the ecu is vag and fitted to some Audi’s 👍
Well they fitted different engines depending on the colour of the Bentley badge. Red or green. Either bmw or the old chuffer reliable Bentley engine with twin turbos added. Maybe this is the later version, with facelift headlights
Hi mate. Even if they put a jump pack in reverse polarity, most car makers have a fuse that will blow to prevent damage to the ecu. Your man is right, there is a preventative issie stopping the car from starting. Good idea to watch a few videos by pine hollow auto diagnostics. His main work is on similar situations. Good luck!!
Looking forward to the next instalment. There are few things more satisfying than getting an electrical fault sorted where somebody else has given up. If it was a reverse polarity fault let's hope it hasn't fried any other modules. Good luck!
We love the challenging Investigation cars Rob especially when Chris takes the time to explain the thought process you go through to solve them. Lovely car, lets hope for SRUK profits rising in 2022. Cheers, Mac in Stafford.
Just had a problem with a3 that suddenly stopped without warning and would not run (fuel and heater plugs checked etc ..) turned out to be the turbo failed and was choking the engine. Enjoying the videos keep up the good work.
Wow what a gorgeous car..! I hope you continue to work on it and get it running and driving, I know that you and Chris are not easily beaten..!! Can’t wait for the next video on this , keep it up guys 🙏🏻😃❤️
All the best to you and families Rob, Chris, all the subscribers and supporters of the channel. Its been amazing watching you grow and I love the community around this channel - a real family of enthusiasts 💯
This from the period where VAG owned Bentley. If you've got a mate who's got any specialist VAG diagnostics, it should go a long way into it. I've had a GT on VCDS and it worked fine.
Great video fellas! i'm wondering if the coolant temp sensor has failed, and showing as overheating, then maybe the ecu wont let it start to protect the engine?
What a beast of a car. I work on a Daimler Ferret Scout Car here in Australia. I've also worked on Land Rovers and Jags. British cars sure can be complicated. This is a great video. Very interesting. Too many electronics in modern vehicles. Looks like the ECU was the easiest thing to get to.
A tricky little problem this. Could take a while. When it comes to issues with sensors, relays, ecus & looms etc, it can be like looking for a needle in a haystack. I had a right nightmare trying to fix a Lexus RX300 a while ago. 3 dash warning lights. Had 3 garages and different diagnostics on it over 7 months until the issue was sorted. First it was the abs module (had a refurbed one from BBA-REMAN), then the loom, then the ecu tested, then a sensor replaced and finally it was actually a relay inside the fuse box. Good luck with this. Depending how much time you put into it, I think you may be able to suss it out. That’s a 6.75 V8. Rolls & Bentley Been using it for donkeys years. I know a chap with the red label version of the Arnage which I recall is the fast version. His was beautiful. It was immaculate with piped cream leather etc.. he bought my 2010 Vogue SE off me in 2013/14 time and I visited his house and looked at his Bentley and went out in it. Very impressive car indeed. 400 bhp & 10 mpg !!
What a beauty! Beautiful content and video. I like how you are not afraid to look at different cars. Very different from your regular videos and had me glued as usual. Would love to see running again along with you guys turning a profit.
Chaps this is a classy motor, I know you will get that beaut running. And Rob don t beat yourself up ref not spotting the temp guage straight away you found it while fault finding and now are well on the road to fixing it. Can't wait to see this finished and most of all you getting a decent profit.
I looked at a 10 plate a few years ago and while thinking bumped into a pal who’d had a few and he put me off the possible breakdown chances so I stuck with the Range as I know more about them and glad I did, two years on and all good as I’ve got connections with JLR experience .
No communication codes usually indicate a can bus problem so need to check the 5v reference circuit running between modules - If temp gauge is reading max that's a default setting on a lot of systems when the engine ECU isn't talking to the network
Loving it and perhaps shows why some of these big old prestige cars are relatively cheap at auction. Many few years ago I bought a Volvo XC90 from a main dealer that developed a leak into the floor from the sunroof drains, that killed the electronic systems located in the floor, I was quoted £6k to fix it, but fortunately was able to return to the Volvo dealer for a settlement as they had sold and maintained the car from new.... I am pretty sure that car made its way back into the 2nd hand car market by some means...
Rob, if someone has jumped the battery the wrong way round, most of the current would effectively be a “short circuit” through the vehicle battery, so the jump pack would either blow its own fuse or the cells in one battery would destroy itself. You would effectively have two 12 volt batteries in series with a short across the potential 24 volts. I would be very surprised if the ECU was exposed to the wrong polarity during the fireworks of the wrong reverse connection. It would see maybe a tiny voltage of the very flat battery at first then nothing if the polarity of the jumper was reversed. Could the starting issues be something to do with the immobiliser?, lost sync with the key ?. It’s a good one !.
Could it be as simple as the temp sensor(s) ? just a thought as that would be my train of thought seeing the gauge. Thanks guys for such great content and all the very best to you and yours.
I am no expert but I have learnt from painfully expensive recent experience that cars with complex electronics don't like being jump started. When the battery went flat on my wife's 2005 Mercedes SLK 280 it turned out the Ni-Cad batteries had failed in the alarm siren so, it was drawing power from the main battery. I jump started it and it seemed fine except the SRS light would not go out. Various fault codes but the "Unable to communicate with the SRS control module" error message is what rang a bell during this video. So, cutting a long story short after a so called Merc specialist had it for a month but failed to cure it, it ended up at the Merc dealer. £800 later I got it back with a reconditioned SRS ECU. I had spiked the SRS ECU when I jumped it leaving me with a simple choice, spend the money or scrap the car as it was heading for an MOT fail with an SRS fault. Good luck with this project.
Don't know how you guys manage to show patience with some of the daftest comments on this video, either many don't understand how cars work or they don't bother watching the full video. Good luck with this one, keep us all posted, don't let it beat you.
Rob, have had a good search, put the key in drivers door lock, lock and unlock 3 times, the may reset alarm / imobiliser found this on an American site, so if it doesn't work try the passenger side front door lock, instead.
Brilliant. I mentioned a few uploads back that I wasn't thrilled with another Citroën van and the boys have blown the roof off this time with a Bentley Arnage. I loved these cars and the coupe version was a thing of sheer beauty. Great content.
Nice car gents. Would it be as simple as an interlock in the ECU not allowing the engine to start if it has a coolant temperature reading that is off the scale i.e. to stop any further engine damage??
@@mwh2412 good point but possibly Not if it was stored in the ECU as the master control as that was not responding on the CAN bus, the analog style metering may be different from the sensor. I'd start with the engine ECU and fuel lines and tank to make sure water hadnt condensed into the fuel system (from the cold tank walls) and then the spark plugs and spark,
It's gonna be a challenge, but what an awesome ride! Had to laugh for a Second at you two trying to push that three-ton beast. Hope y'all didn't strain anything important!
It might be worth trying Ghost Motors in Borough Green (Rolls Royce and Bentley specialists) to see if they can offer any help or advice. Good luck guys!
The reason they put them in the boot is to stop you jump starting from there that’s why it’s hidden under the floor .. the other reason is so battery lasts longer as it’s not exposed to the extremes of hot and cold like it would be under bonnet .. but it’s so you don’t spike the ECU and various control modules .. the positive terminal under the bonnet is usually connected straight to starter motor etc for starting and there is protection put in place from the manufacturer to stop it spiking the control modules etc .. i suppose the easiest way to describe it’s like a one way system the power goes from boot through all the modules but from the terminals under the bonnet they have put protection in place backwards to stop the modules being spiked and damaged
Crack the ECU open and check any diodes, there’s usually reverse polarity protection diodes. If there’s any reading short circuit take them off and test them removed. If you do find any that are short circuit then cheap to replace - you can also run the ECU without them as a test if it’s across the supply and ground.
sounds like my range rover 2004 with BMW engine - the ECU stopped talking to the immobiliser and a re-sync needs to be done. This mobilisation kills the fuel pump and failed to crank over. I also bridged the solenoid to check if it would crank and it did. Re-sync the two computers and they start communicating again and remove the immobilisation - check the chip is in the fob that also is part of the immobilisation procedure. Good luck!
what a cliffhanger 👀 great video as always 👏
Great video again, deserve to be verified I reckon.
Wow RUclips themselves commenting on your video, great work lads you’l get it smashed it and onto the next in no time 👍🏼
@@SoloSurvior I don't think I've ever seen that?!
@RUclips Give the men a ✅they deserve it! :)
OMG, even the producers of Eastenders couldn’t produce an end of year ‘cliff hanger’ this good. Just when we thought you might have cracked it along came the ‘doof-doofus’ (Rob’s closure piece). More excited for part 2 than I am for anything on Christmas TV this year! Superb chaps!!!
that was funny!
Sounds like Eastenders too.
I love that Chris is more at ease on the camera nowadays. It adds another dynamic to the videos. Good luck with this project! 💪
Rob are you and Chris available for Weddings, Funerals and Bar mitzvah’s in the New Year 😂, your both look proper perfect in Chauffeurs caps , Happy New Year 👍🏻.
I think Chris is going about it in exactly the right way, but I am sure the ECU is protected against polarity mistakes, I have learnt that it is best to do as many simple checks as possible and not to assume the most complex part of the problem is causing the fault. with a car that did work until it spent a long time unused it is very unlikely the ecu is the fault. Check the pumps are running, check the fuel pressure sensor, check the temperature sensor, a corroded connection could be seen as a high resistance which may make the temp guage go to hot, unplug it and see what happens, check the ecu earths etc etc, I am probably repeating what you already know, but it bears repeating! Every time I assume a fault is a difficult one it turns out to be somethiung simple!
Phil
Sounds very logical that 😎
Unfortunately it wasn't ECU was burnt out most likely someone put way to much power in it I do know tho cars do have a battery charger which you can plug in if the car isn't used that much to stop the battery from going flat.
Wrong, forward a few episodes
It was the ECU that was at fault, burned out due to as Chris states some numpty connecting the battery leads the wrong way round ☹️☹️☹️
Just a possible hint - as know from dealership experience of messing up battery swaps that there is a battery management ecu hidden behind the left hand (starter battery) that can get fried if you attempt to jump start direct to terminals or as in this case wire up wrongly - probably not the problem but just an idea of something else to eliminate. Also you will be aware post battery changes that you have to drive the car for a few miles so it can reset all the various computers e.g. steering, suspensions, windows, etc etc - There is a very specific procedure on what to do pre removal on steering position, brakes, etc etc. I heard the dealer saying something like over 100 sensors on a continental that gets reset post battery change. Enjoy the journey.
I agree with it having a little ecu for batterys, especially as you said it's bmw parts, after watching salvage rebuilds for a while I decided to clean up a few cars, I have just got a BMW from that year and noticed the battery has its own little circuit board,
But what I would want to suggest is, could the temp wiring be shorted so when power on its getting full 12v therfore the temp skyrocket and also causing electrical issues so you can't read the ecu?
I'm not that mechanically knowledgeable but I could listen to Chris explain things all day long I actually learn so much from the two of you 👍
Loved it when Chris said the 'Fuels low, so I put a gallon in it' ... that's probably just about enough to fill the fuel lines!!
Or make them wet!
sounded like it broke his heart to spend that much as well
what about a squirt of quick start up the air intake
and then consumed with one blip of the throttle.
Polite observations!
If this Bentley has been sitting for some time, and it has, and the fuel gauge is showing almost empty, put in a full tank of fresh petrol. One gallon of fresh gas isn’t going to cut it! Next, put in a set of fresh spark plugs. Are the existing ones actually sparking? Is there coolant in the radiator? Fresh coolant would be nice. Oil. What are the current oil levels? Battery. A fresh Varta battery I am sure would make a WORLD of difference!
Good luck!
Who needs Xmas pressies with this excellent auto buddy episode. The warm relationship is a far cry from Brewer and how he treated Ed. A joy.
😂😃😅😂😁😅😃😂😅😂
It's 'Fatty Brewer' if you don't mind 😂
Ed China was well shot of old 'Fatty' Brewer.
@@stokes8626 he made motorised sofas long before wheelerdealers was around.
The Mike Ed friction was just for the TV, however, little did we know Brewer was a bit of a plonker off screen, ultimately Ed is a gentleman through and through…!!
Often ECU's are designed to have a single high current protection diode on the pcb to product the input from reverse polarity, often this will blow but in doing so it protects the rest of the board. There will possibly be other components on the input side too to protect against load dumping which could have failed due to a surge. Might be worth having someone familiar with pcb level work to locate and check the integrity of the diode etc. BBA-Reman might also be able to help with this.
If it is possible to examine the ECU PCB, it would be worth noting, that there could be several SMD Fuses on the PCB which are present to protect the 'delicate' components - such as the ICs and Main Microprocessor. These SMD Fuses will have an "F" designation, and can be checked with a DMM. I have repaired many electrical items with Microprocessors, just by doing this, replacing the blown SMD Fuses on the PCB. I hope that this helps.
Reverse polarity protection doesn’t burn down because its usually designed to do job without any drama. What can burn down albeit very rarely is usually TVS diode which is there to protect circuitry from over voltage. However they are also designed to sustain quite a bit of hammering and will usually burn your fuse way early before throwing the towel themselves. Usual failure sources for ecu which has some age are capacitors (electrolytic or tantalum) which can fail due age or temperature and short-circuit, resulting cascading failures of all kind of components down and upstream. In which case new ecu is more economical option.
yes and if preceded by a fuse or self resetting fuse it could protect the ecu or leave it open for a simple repair. I bought a hardly used whirlpool expensive dryer off ebay for 50 quid and lo and behold there was a wrong value fuse under the top which I replaced with a higher value one, it's still working 10 years later...I wouldnt be too disheartend at that point..
@@peterduxbury927 yes exactly
I've had a bit of experience with arnages. I once had one intermittently overheat and the car would go in to limp mode and then turn off and cut ignition until it cooled. If yours thinks it's overheating pegging the gauge immediately it will not let it turn over or start.
I have no knowledge of these cars ,but I agree the ECU is seeing the temp gauge in the red and the safety has kicked in and disabled it.
I also had a thought the ECU has a fuse ,if that's blown there will be no communication..
Actually second thoughts ..The scan tool is communicating so maybe I'm wrong with the ECU fuse
Buzz the coolant sensor out - if you can find the bloody thing
when the ignition is switched the ECU sends a temp signal to the cluster. if there is no input it will max out. this is how it's done on all makes with a bosch ecu.
the ecu is just not communicating at all
@@xalty1200 100%
And this is why I hate computers on car's I am an old school retired mechanical engineer the more electronics you put in a car the bigger the headaches become .Happy new year lad's.
At the bottom of the Vehicle check there are a handy 900 checks you should make when buying a used Bentley.
Check #1: Wallet Full.
Some of my fave bits when Chris goes through his thought process to address an issue, most you just see on the tools but hearing the process of deduction and possible issues is awesome and helps peeps learn. GUYS YOU ROCK
Just some tips.. sometimes it is as simple as checking that the engine ECU power supply is ok, there is typically a dedicated fuse(s) for the engine side electrics, sensors, etc. Could also just send off the engine ECU to ECU specialist to verify it functions well, before attempting to source another which will need recoding, etc..it may come up to have no issues at all.
It's a 6.75 litre V8, which was the standard motor used in Bentleys and Rollers in the 60s/70s/80s. The one you've got is a turbo charged Arnage T, which is quite a rocket ship. Enjoy it, once you get it running.
The RR Silver Seraph used the V12 from a BMW 750, Bentley had their own V8
I think you've got an Arnage T there, which is the high output variant (450bhp). It certainly has Arnage T alloys. Lovely car and have always wanted one. You may find it is a VW ECU, as I'm pretty sure they had purchased Bentley by then. The key looks like a VW-style key, rather than BMW. The motor is very simple and originates from the 1960-1970s Rolls Royce 6.75 V8 unit. I am almost certain it is pushrod rather than overhead cam. If anyone can fix it, you guys can!
It is the t yes 👍
Bit of a back story on VW and BMW. BMW thought they were buying Bentley with Rolls Royce as they were REALLY after Bentley but VW had sussed it was a separate purchase. So BMW didn't get what they were actually after ending up with RR and VW got Bentley.
@@1chish very true. Someone must have got their P45 for getting that wrong, probably never work on the car industry again.🤣
@@1chish other way round. VW were buying RR & Bentley. But BMW sneaked in and bought the RR car rights from Rolls Royce aero engines (as the car company didn’t own the rights to the name). BMW were co developing an aero engine with Rolls Royce at the time.
VW paid a lot of money thinking they were getting Rolls Royce, but just got the factory and Bentley.
@@1chish Katy’s right. Other way round
What a Christmas cliffhanger..I was expecting Dirty Den to reappear! I cannot wait for the next episode. Great work guys.
Rob, you get all excited about a fiesta starting for the first time. I hope you’re sitting down when this one finally fires up! Good luck with it guy I really hope you get a result here..🤞
Rob, Chris - Thanks for posting and good luck with the car - If you are interested in the BMW-VAG connection it goes as follows,
Rolls Royce cars (which also made Bentleys) was owned by Vickers. They sold it in the 90s and there was a battle between BMW and VAG - VAG won the actual company and factory, but BMW were able to separately buy the rights to the Rolls Royce name for cars (Rolls Royce aero engines always owned the Rolls Royce name and historically allowed the car company to use the name under licence). Prior to the sale, Rolls Royce used some BMW parts like engines. After the sale, VAG had the factory but could only use the Bentley name. VAG then started to get rid of all the BMW parts (including engines) in the Bentley cars. Bentley under VAG went back to the old 6.75 litre V8 engine that you have in your car. BMW built a complete new factory to make Rolls Royces, starting from scratch and using BMW parts. That's why your car has VAG ECUs (although it might still have a few BMW parts that they hadn't got around to replacing). As others have said, the engine design is very old and pretty reliable, but of course it now has loads of electronics attached for performance, emissions etc. Good luck - hope you get it to run.
I can listen to rob and chris talk about cars all day, they explain things in simple terms for people like me lol ..hope you get that beauty up and running and make a nice profit lads 😀
I live 2 mins away from Bentley in Crewe, used to work there on the maintenance and saw these getting built everyday.
Keep at it guys you will crack it.
You guys have taken a big risk on something you know don't know much about. That's my idea of a fun challenge. Excited for this one.
suspect it’s sale or return hence the blanked plate
@@eliotmansfield They said that in the video, but it's still a big gamble even if the worst case consequences can be avoided.
Well, I never expected to see a Bentley on the channel, but I'm really glad you have one. I know most of us will never have the opportunity to own one, but it's a great example of even expensive high end cars can have mysterious faults too. I sincerely hope it stays on the channel, as it's going to be interesting to see of you can get it running.
Since the channel has started there’s now a million amazing mechanics just watching Chris the man’s a genius
This is a really good one! If anyone is going to persevere and get to the bottom of the problem it’s you guys. It’s amazing what small issues do bring modern cars to a halt and are actually easily fixed. Can’t wait to see part two!
That’s a cracking car guys. The team at Classics Monthly have been running an earlier Bentley and have established contacts with several specialists. They are based at Cudham in Kent. Long shot but they might be able to offer some help. 👍
I like these guys, no bullsxxt. Straight, unedited planning and debates.
Really hope you can sort this one boys , very impressive car !
I love that your oit of your comfort zone , albeit you can give it back !
The fact your good enough to know when to walk away when its too risky , shows discipline and good business sense !
I tip my hat to you both , love the content keep it coming 👍
Watching Chris run few permutations in his head is great. All us car fidlers do the sane but he is a master
You can have the ECU tested for about £50 and they can rebuild, reload the data, etc. Might even be a swap out, if there's one available.
Send it away, wait about week and get it back tested, fully working.
Nice video proving what I have always said that Bentleys are such a great car for the home enthusiast who, with a few tools and little specialist knowledge, can make all necessary repairs! Hope you will sort this out and make a fortune because it always favours the brave! I have wanted a Continental for years but the head always overrides the heart and I never will!
Before changing ecu, definitely worth sorting the temp sensor first as that could be the problem. Look forward to part 2 gents 👍
I have been watching for a long while now. Since Chris wouldn't have a bar of the camera. It's amazing and fantastic to see Chris come out of his shell and get in front of that camera
Rob, Chris you’ve made my day, I really wasn’t expecting to see a video from ye this week. Thought you’d both be enjoying a much deserved break - I just know you’ll get that Bentley started and back on the road. Seasons greetings to you both!
Absolutely love your videos. Rob and Chris are like a married couple without the rows! Chris is so laid back he’s almost comatose. 😀
Please keep the videos coming, nice to see this Bentley, something a bit different to look at.
I love the way Chris is just having a lay down while you have a big old chat. 🤣
Never mind anything else with this car, I'd just like to say well done for physically pushing it into the workshop👍
Merry Christmas guys, thought it was comical with Rob sitting in the car and beeping "Chris come over here" the Bentley mindset has already kicked in. The battery terminal damage suggests exactly what you thought, reverse polarity jump start attempt.
I spotted that too, all Rob had to say was "can you come over here my good man" :-)
@@dontuno it cracked me up, but I would probably be worse....
Arnages are my favorite body style of the Bentleys; seriously a nice, clean ride. I can't modify my truck until it's 25 due to emissions we have here in Texas in some counties, but always thought it would be fun to have one of these V12s in it as it's not a great deal a larger motor than the 6L already in it, and the weight is also about the same between these HEAVY cars and a full size Silverado. Hope y'all can make some progress on it and continue with the project, that would be plumb neat.
Hope you had a good Christmas Rob and Chris and have a great 2022.
The engine is the old RR/Bentley 6.75 litre V8, originally made in the fifties. updated and turbocharged. It was always a great engine and is still in production for the Arnage.
Hope you had a fantastic Christmas guys. I absolutely love the Arnage (it's a V8 by the way). I thoroughly enjoyed this video and the investigation work. Chris is a top mechanic. I'm sure you'll get it started and I'm looking forward to it!
If that was here in Louisiana we would have changed out for a LS Chevy swap and be done with problems forever on that car. The old boys need to learn to think outside the box once in a while why me and old Elmer can change that out in one weekend and have that car on the road by Monday morning in time to get to work at the feed mill. Bloody hell mates chip chip cheerio and all that .😂
The range of motors you guys do is quality! Chris will keep this Bentley for himself!!! Good work 👏🏼
I always enjoy Chris fault finding, he's the man when it comes to auto electrics. I'm looking forward to part two. All the best guys.
A serious car for serious money,good looking tank,luxury at its finest 👍
My XJR hated being low on fuel. Always ran happier with at least half a tank of fuel. What i mean is a empty fuel tank can produce condensation which can end up in the fuel system. Some of these cars will not start with a door open. Do you have to cover the brake for it to start ? . Anyway hope you get it going soon and i cant wait to hear that stunning piece of engineering running. Great car.
Just to let you know guys this is the 5pm video we thought the time wouldn’t matter today. A lot of the running gear around this car is bmw including all the breaks cooling systems etc however after a bit of searching online with the part number the ecu is vag and fitted to some Audi’s 👍
The subscribers (supporters) are cheering you on. Stick it in the back of the net.!! Chris is a Super Striker !!
Hope you manage to fix it and make your bit on it, you deserve to. Thats if Chris doesn’t claim it for a weekend driver once it’s fixed 😂
@@pdppanelman5889 ha ha! ( I’m guessing you’re a keen football fan! 😊) best wishes for a happy healthy new year buddy 👍
Well they fitted different engines depending on the colour of the Bentley badge. Red or green. Either bmw or the old chuffer reliable Bentley engine with twin turbos added. Maybe this is the later version, with facelift headlights
Lads more like this .a fiat 500 it is not 🥲
You can’t leave it there, I’m gripped! You two always come up smelling of roses, this is going to be fantastic, what a car.
Lovely Bentley. Do they do a ladder rack for it? Love to have it for my window cleaning round. Always wanted to go upmarket.😃
The guy that cleans windows round my way has a hearse...😂😂😂
Hi mate. Even if they put a jump pack in reverse polarity, most car makers have a fuse that will blow to prevent damage to the ecu. Your man is right, there is a preventative issie stopping the car from starting. Good idea to watch a few videos by pine hollow auto diagnostics. His main work is on similar situations. Good luck!!
Keep at it chaps, I've got a good feeling about this.
Looking forward to the next instalment. There are few things more satisfying than getting an electrical fault sorted where somebody else has given up. If it was a reverse polarity fault let's hope it hasn't fried any other modules. Good luck!
We love the challenging Investigation cars Rob especially when Chris takes the time to explain the thought process you go through to solve them. Lovely car, lets hope for SRUK profits rising in 2022. Cheers, Mac in Stafford.
Just had a problem with a3 that suddenly stopped without warning and would not run (fuel and heater plugs checked etc ..) turned out to be the turbo failed and was choking the engine. Enjoying the videos keep up the good work.
Wow what a gorgeous car..! I hope you continue to work on it and get it running and driving, I know that you and Chris are not easily beaten..!! Can’t wait for the next video on this , keep it up guys 🙏🏻😃❤️
All the best to you and families Rob, Chris, all the subscribers and supporters of the channel. Its been amazing watching you grow and I love the community around this channel - a real family of enthusiasts 💯
This from the period where VAG owned Bentley. If you've got a mate who's got any specialist VAG diagnostics, it should go a long way into it. I've had a GT on VCDS and it worked fine.
Haven’t clicked on a link so quick since the Sierra Cosworth!!!!
I 2nd that
Same
@luckyadam331 something's are just that important
I had to return to watch this one, got a bit fed up with Ford Escorts so haven't watched any for a while, but this is the business !
Great video fellas! i'm wondering if the coolant temp sensor has failed, and showing as overheating, then maybe the ecu wont let it start to protect the engine?
That’s what I thought the moment I saw that gauge, not that I know anything about Bentleys but I reckon it could be something like that.
I second that, it's certainly logical but sods law probably not that simple!
What a beast of a car. I work on a Daimler Ferret Scout Car here in Australia. I've also worked on Land Rovers and Jags. British cars sure can be complicated. This is a great video. Very interesting. Too many electronics in modern vehicles. Looks like the ECU was the easiest thing to get to.
Had to laugh when you said 'let's push it in' I was thinking no way! Haha but you and Chris must have had your weatabix
It was like something from Only Fools and Horses or even Minder!
A tricky little problem this. Could take a while. When it comes to issues with sensors, relays, ecus & looms etc, it can be like looking for a needle in a haystack. I had a right nightmare trying to fix a Lexus RX300 a while ago. 3 dash warning lights. Had 3 garages and different diagnostics on it over 7 months until the issue was sorted. First it was the abs module (had a refurbed one from BBA-REMAN), then the loom, then the ecu tested, then a sensor replaced and finally it was actually a relay inside the fuse box. Good luck with this. Depending how much time you put into it, I think you may be able to suss it out.
That’s a 6.75 V8. Rolls & Bentley Been using it for donkeys years. I know a chap with the red label version of the Arnage which I recall is the fast version. His was beautiful. It was immaculate with piped cream leather etc.. he bought my 2010 Vogue SE off me in 2013/14 time and I visited his house and looked at his Bentley and went out in it. Very impressive car indeed. 400 bhp & 10 mpg !!
Never thought we'd see a Bentley!! Interesting to see how it pans out.
Why? They started the channel with a Ferrari lol
What a beauty! Beautiful content and video. I like how you are not afraid to look at different cars. Very different from your regular videos and had me glued as usual. Would love to see running again along with you guys turning a profit.
All the best with this one Rob & Chris! Really hope you get it going!
Chaps this is a classy motor, I know you will get that beaut running. And Rob don t beat yourself up ref not spotting the temp guage straight away you found it while fault finding and now are well on the road to fixing it. Can't wait to see this finished and most of all you getting a decent profit.
That will be impressive when you get it running and go out in it to collect the coffees! It will probably cost £5 in fuel just for that round trip.
I looked at a 10 plate a few years ago and while thinking bumped into a pal who’d had a few and he put me off the possible breakdown chances so I stuck with the Range as I know more about them and glad I did, two years on and all good as I’ve got connections with JLR experience .
Rob will get a “brand new second hand battery” on her and she’ll fire straight up 😂
No communication codes usually indicate a can bus problem so need to check the 5v reference circuit running between modules - If temp gauge is reading max that's a default setting on a lot of systems when the engine ECU isn't talking to the network
Hope you had a good Christmas Rob and Chris 👍🏼
Can already hear Rob can’t wait to start cleaning it, be a few episodes in that alone it’s like a cruise ship
I can't wait to see how this pans out.
Guys, hats off to you for taking this on. Big balls needed but big profit potential if it comes off. You can never be accused of lack of bravery!
A Bentley of this age can't be a gamble for you guys looking forward to seeing the end of this project and the results
Loving it and perhaps shows why some of these big old prestige cars are relatively cheap at auction. Many few years ago I bought a Volvo XC90 from a main dealer that developed a leak into the floor from the sunroof drains, that killed the electronic systems located in the floor, I was quoted £6k to fix it, but fortunately was able to return to the Volvo dealer for a settlement as they had sold and maintained the car from new.... I am pretty sure that car made its way back into the 2nd hand car market by some means...
Fingers crossed Rob and Chris hopefully it’s the ecu and you get the Bentley running good look 👊👊👍
Rob, if someone has jumped the battery the wrong way round, most of the current would effectively be a “short circuit” through the vehicle battery, so the jump pack would either blow its own fuse or the cells in one battery would destroy itself. You would effectively have two 12 volt batteries in series with a short across the potential 24 volts. I would be very surprised if the ECU was exposed to the wrong polarity during the fireworks of the wrong reverse connection. It would see maybe a tiny voltage of the very flat battery at first then nothing if the polarity of the jumper was reversed. Could the starting issues be something to do with the immobiliser?, lost sync with the key ?. It’s a good one !.
Could it be as simple as the temp sensor(s) ? just a thought as that would be my train of thought seeing the gauge. Thanks guys for such great content and all the very best to you and yours.
I am no expert but I have learnt from painfully expensive recent experience that cars with complex electronics don't like being jump started. When the battery went flat on my wife's 2005 Mercedes SLK 280 it turned out the Ni-Cad batteries had failed in the alarm siren so, it was drawing power from the main battery. I jump started it and it seemed fine except the SRS light would not go out. Various fault codes but the "Unable to communicate with the SRS control module" error message is what rang a bell during this video. So, cutting a long story short after a so called Merc specialist had it for a month but failed to cure it, it ended up at the Merc dealer. £800 later I got it back with a reconditioned SRS ECU. I had spiked the SRS ECU when I jumped it leaving me with a simple choice, spend the money or scrap the car as it was heading for an MOT fail with an SRS fault. Good luck with this project.
Wish you both a Happy New Year.watching you both has made my year in lock down go fast thanks
Don't know how you guys manage to show patience with some of the daftest comments on this video, either many don't understand how cars work or they don't bother watching the full video.
Good luck with this one, keep us all posted, don't let it beat you.
" Check the oil, check the tyres ! " Yes well car vertical is certainly on the ball ! 😅😃😂😁😅😃😂😁😅😃😂😅
It's sound advice to be fair, most private buyers who've bought from me don't even open the bonnet!
Rob, have had a good search, put the key in drivers door lock, lock and unlock 3 times, the may reset alarm / imobiliser found this on an American site, so if it doesn't work try the passenger side front door lock, instead.
Could the ECU be cutting the spark and fuel because it thinks the engine temp is in the red? Good luck with this one, what a car!
That’s what I thought check the sender unit to see if it’s bad. Maybe disconnect it and try cranking the engine?
Could be but the list of "ECU not communicating" codes is a bit suspicious I'd say.
Brilliant. I mentioned a few uploads back that I wasn't thrilled with another Citroën van and the boys have blown the roof off this time with a Bentley Arnage. I loved these cars and the coupe version was a thing of sheer beauty. Great content.
Nice car gents. Would it be as simple as an interlock in the ECU not allowing the engine to start if it has a coolant temperature reading that is off the scale i.e. to stop any further engine damage??
They’d be able to read a fault code on it if it was that.
@@mwh2412 good point but possibly Not if it was stored in the ECU as the master control as that was not responding on the CAN bus, the analog style metering may be different from the sensor. I'd start with the engine ECU and fuel lines and tank to make sure water hadnt condensed into the fuel system (from the cold tank walls) and then the spark plugs and spark,
Best video yet Rob looking forward to part 2, the apprehension in your face and voice at the beginnig to the confidence at the end is a joy to see. 👍👍
It's gonna be a challenge, but what an awesome ride! Had to laugh for a Second at you two trying to push that three-ton beast. Hope y'all didn't strain anything important!
From Fiat's to Bentleys you guys do it all! Top video lads. I hope you both had a Merry Christmas
It might be worth trying Ghost Motors in Borough Green (Rolls Royce and Bentley specialists) to see if they can offer any help or advice. Good luck guys!
I have the same issue on a 2003 mini cooper.! Just noticed 225,000 Subscribers now! Well deserved and congratulations.
When the battery is in the boot, you NEVER EVER put a jump pack on a battery, you use the terminals under the bonnet
I’ve always used the terminals where provided but what is the reason for this?
I second Largeone, would also like to know the reason
I've learnt something new as you do every day.
The reason they put them in the boot is to stop you jump starting from there that’s why it’s hidden under the floor .. the other reason is so battery lasts longer as it’s not exposed to the extremes of hot and cold like it would be under bonnet .. but it’s so you don’t spike the ECU and various control modules .. the positive terminal under the bonnet is usually connected straight to starter motor etc for starting and there is protection put in place from the manufacturer to stop it spiking the control modules etc .. i suppose the easiest way to describe it’s like a one way system the power goes from boot through all the modules but from the terminals under the bonnet they have put protection in place backwards to stop the modules being spiked and damaged
@@djs66666 very nice explanation mate. Should never jump from boot. 👍👍
Crack the ECU open and check any diodes, there’s usually reverse polarity protection diodes. If there’s any reading short circuit take them off and test them removed. If you do find any that are short circuit then cheap to replace - you can also run the ECU without them as a test if it’s across the supply and ground.
The immobliser on my car causes the temp gauge to go into the red and goes back to cold position once disarmed. Good luck chaps.
sounds like my range rover 2004 with BMW engine - the ECU stopped talking to the immobiliser and a re-sync needs to be done. This mobilisation kills the fuel pump and failed to crank over. I also bridged the solenoid to check if it would crank and it did. Re-sync the two computers and they start communicating again and remove the immobilisation - check the chip is in the fob that also is part of the immobilisation procedure. Good luck!