BMW E39 E53 E46 Most Common Over Heating Causes And Coolant Leaks !!!
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- Опубликовано: 29 авг 2024
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Cool video! Just came across similar symptoms on my wife's car as you mentioned in your video.great quality and great information. I would like to mention the trick of turning on your heater on high if your driving and its overheating to drop the temperature of the motor .
A nice review of major causes of overheating! A good voice/picture, too.
Thank you. My E39 just started leaking coolant and overheating the day after picking up my LDR girlfiend at the airport. Luckly have accsess to another car, but it just SUCKS that it decided to have cooling problems right now
Dude you are awesome!! I moved from e30s to e39s and I love your videos!!!
I've done e30 and e46. I kinda fancy a e39 😁
Thanks Nathan! I picked up a 2003 E39 530i and when it got cold out this winter i had a coolant leak. So your videos are very helpful. I don't know a lot about cars but my dad is helping me with this one. So thank you for your great videos!
You're good, Merry Christmas.
Merry Christmas to you too
I like your video , you go with detail which a lot of other people just tell a little
Nate my manual arrived today. Reading up on several things relating to the issues i wanna check into.
Just had a Febi thermostat fail in the close position. Engine got 130c.....replaced by a Malhe stat. Engine seems fine still. Replced all two years ago. Hope the orings survived the losening and refitting.
I have a 2000 bmw 528i and it overheats a tad bit when I start it back up from a stop( like gettting gas or grocery store) while it’s in park, when I take off and I start driving it will go back to the middle and then a bit hot when I stop at a light but after that it will not overheat after that.
My fans work but I did notice that my front electric fan (auto transmission) doesn’t go as aggressive as it once was, it was always on and loud with the ac on (either stage 3 or 2), now it will only go into stage 1 and stay there. I see no leaks and my coolant level is perfect. Car runs great but I’m having this issue.
Nathan, I subscribed as soon i got this car lol. Thank you!
Really hard to say but you could have a thermostat issue , or possible a pulled head bolt
Nathan's BMW Workshop whaaaaaa?
A pulled head bolt? Hows that possible?
Oh, by the way, the car has 240,000 miles.
No smoke or funny noises.
No residue on the oil cap, oil looks good and smells like it. Also, when I squeeze the top hose from the thermostat when the car is cold and hasn’t been turned on, I hear the coolant pass through the thermostat and into the bottom hose.
I don’t mind swapping the thermostat but on your video it seemed like they don’t usually fail by not opening but by remaining open.
Thank you Nathan.
Nathan's BMW Workshop thermostat was faulty. Thanks!
Did a whole cooling fiasco, including the pipes below the manifold.
All good!
Year old comment but it just sounded like it needs a new aux fan lol
Great Video Nathan
Thanks brother !
MERRY CHRISTMAS TO YOU AND YOUR FAMILY !
Merry Christmas to you too thanks for watching
Thanks Nathan and Merry CHRISTmas!
😎🇩🇪🚙
Yeah, well, not long ago during a high speed run on the Autobahn between Sinsheim and Heilbronn, my daughter pointed out from the back seat that there was a red light burning in the display. Yep, overheating! I pulled off as fast as possible, but too late. Radiator failure, and pulled engine block studs. Fortunately, I found a low miles M52TU (about 65,000 miles). My car had about 150,000 miles on it. Lesson here is to replace that plastic piece of crap around 60-80K, along with the garbage plastic impeller water pump. Cheap insurance!
great information! live in a very hot climate ' got it a good price, but fell in love with my BMW (it can get hot)
First I had a coolant leak out the expansion tank hose I replaced that now the pressure builds up on my car so much that the coolant steams and leaks from the expansion tank cap
Dont forget the expansion tank problems, it can crack the housing of the level sensor (on e46 at least) and you get a leak where the sensor sits, and ET can fail completely from that crack. From what I ve researched if coolant level sits below the max it should be fine, just dont overfill or the pressure will cause the system to fail at its weakest point.
Hey Nathan, I've got an e39 523i and it started to overheat, checked the cooling system at the garage and its fine, but when the engine gets to temperature it starts smoking more from the exhaust and I've noticed a power drop when I was driving. The smoke isn't thick (less then a boiling kettle), its oil, but it's always been eating oil and smoking a little.
Great work, awesome video. I am having overheating issues, I have a steady leak coming from the lower part of the radiator, on the driver side...have not had a chance to get it off the ground...I wonder if you have some thoughts, something I may look at first before anything else? Any common horse leak perhaps? Thanks in advance!
Hey did you ever figure it out? I’m having the same problem
Great job as always!
😎🇩🇪🚙
best video ever
Replacing the coolant temperature sensor fixed my idle overheating issue.
is your main water tubes were getting stifness, ior just over heating, my e39 2001 getting overheating and water tubes are hard, the thing i replaced the Thermostat, the water pump , the base and the clutch but, my radiator is not original + Radiator sensor not working
ok so i did as you said and filled untill it came out of the plastic screws and at that point it is 99,5% full...but you said its supposed to be 3 inches below while mine is maybe 0,5cm below the top how does this make sense????
Hi Nathan
Lots of great information. I have an E46. I have replaced the thermostat and water pump. The auxiliary fan is not working right now.
The car was running at a perfect temperature at highway speeds for about an hour and suddenly it overheated. I stopped right away and noticed the expansion tank is now broken. This car has a history of over heating issues. Any idea what could cause this now.
Thanks
Hey man could you help me out with my 2001 bmw 530i it’s overheating expansion tank was just replaced along with the radiator
David Jay did you get It fixed?
review is always useful. thanks.
Well done, nicely,simply explained every bright mechanical aspects .it is wishful thinking that every mechanics, did same way? ( I have evidences)
Hi Nathan, My 2001 e39 M54 auxiliary water pump nipple has failed and broke off inside the water hose (the hose is on the side of the pump, not the one on the end) and the nipple that broke off points up to receive the hose. Can I bypass the auxiliary water pump and if so, can I do it permanently? Any downside to bypass? What is the best fix? Thank you, your videos are excellent!
Thanks for the info! Gonna bleed a 2005 325cic because the engine gets hot (but I don't get a warning light). i hope bleeding will solve the problem.
Excellent video, brother, I have problem with my e39 2002 530i , overheat on idle or stop light. Now you give me some ideas. God bless you.
Nathan, my 2003 E46 has new wp, all hoses, radiator, exp tank, trans cooler thermostat, and coolant pipes. Upper hose can be squeezed easily, no pressure when idling, leaking somewhere under intake. Is zero pressure on upper hose and air sound when squeezed normal? Maybe hard coolant pipes didnt seal?
Is your heater hot? Or have a comdensation around the wimdshied. If so it could be the heater core
I love watching your videos, thank you so much, I have a 2000 528i e39 and I just noticed that I have a coolant leak from Lower radiator hose, do I change sensor or the whole hose? Its oem with the plastic housing
This was very helpful. So if the plastic part of the radiator has holes that will make the car over heat also. Correct.
So if the plastic part of the radiator has holes that will make the car over heat also. Correct.
I have a 1997 BMW 528i, I had a coolant leak coming from the coolant tank reservoir. Replaced that. Then over heated within the the first 15 minutes. Looked at the thermostat and it was bad so I fixed that. Now it still overheats ... I was checking and noticed the water wasn't circulating, but I can't figure out why, can it be the water pump?
...same problem with by 2003 530i...replaced Tank, the thermostat and the Fan sensor...worked Fine
Sounds to me like there is air in the system. Did you bleed it correctly?
Same issue but I can drive it for about 30-45 min then it will run hot because coolant leaks at the firewall heater core hose. It does NOT spay the stream of coolant inside the cap which leads me to think its not circulating and once under pressure it leaks at the firewall heater core hose. What creates the stream of coolant that's suppose to spray inside the expansion tank?
I have a 01 330i e46 and ive changed the waterpump, fan clutch, thermostat, flushed out the system, and i just got a radiator & coolant sensor. It only overheats when idle. Ive checked both fans and they both work. Any help?
Clarify air lock
What does it mean if the temp gauge under the speedo is going crazy when I’m driving. Not the actual engine temp but the digital temp reader.
Hey Nathan, I have a 2001 BMW 530i , I just had the Water Pump replaced, along with the intake manifold that was broken. My car still overheats, I don’t think the mechanic bled the lines correctly after seeing how you did It, but what else should I get checked? He said the thermostat, but was a pretty crappy mechanic. Also my A/C continues to blow even when the car is off and keys are not in ignition. Please help me out!
WHAT?!
I have an 05 325i, replaced whole cooling system with bunch of other maintenance done 164k currently), with two thermostats failing on me .. wondering if I'm having the same case... it was overheating today with error code p0599!! 😥 I already replaced the electronic thermostat 2x. I took car for drive it was getting over temp, turned heater on full blast.. it wasn't blowing hot for a til I was on the highway, gauge kept jumping with upper an lower hoses having a lot of pressure (hoses didn't have coolant flowing on start .. it was going back to normal after few, car was running really rich at stops and gauge was on some other shit.. back n forth with it... this thermostat only has 10k ... parked the car n the upper and lower hoses had no type of coolant.. empty and sucked in. Just ordered a mahle one...
Not sure on what brand thermostat has on it.. I forgot, it's not a mahle though, got it free with the new water pump impeller installed at 150k
Too much pressure in the system. Have bled it the BMW way. Have replaced everything from water pump, thermostat and sensors, it will go into red if going uphill or flooring it. It will not go overheat even if you idle it all day. Will a defective heater valve make it go overheat?
Yea Sol, don’t leave us hanging. What was your issue?
Update?
@@dvnnix1234
I still have the same problem but not all the time. Sometimes it does sometimes it doesn’t. I don’t know.
Appreciate the info! My E39 just started overheating yesterday. I’ll begin with the simple stuff and move my way up. My car does have a coolant leak so I’ll check the hoses and the other parts you mentioned. I’m leaning towards the Water Pump as the culprit. Nathan I have a question for you. What could be creating a cricket type noise coming from the front of the engine bay? It starts when I turn the AC on or put it in to Drive/Reverse
"cricket type noise coming from the front of the engine bay? It starts when I turn the AC on"
...the same problem cropped up...after I got new overflow tank (leaked), the thermostat and the sensor all OEM. The car didn't heat up...the new noise started
idler pulley
@@jonathangraham4092 yup... min started the cricket noise after replacing the water pump.. If you look at the idler pulley while the car is running you'll see that it's going bad
I'm pretty sure a failed thermostat will only ever fail in such a way that the car will never get upto temp. By design the thermostat is always open and the mechanism that allows it to shut is what fails. Correct me if I'm wrong. I'm pretty sure only if the thermostat housing cracks will it cause overheating issues.
Hi Nathan, can you do a video on what you recommend on doing to properly de-carbonise a BMW? I've looked online, but there is lots on conflicting information. I trust your experience and judgement, so how would you tackle this job? I have an e39 530d M57 motor with 180k miles. It's a bit lumpy and I suspect carbon build up and dirty injectors. Thanks for your great videos. Cheers, Jonathan
I needed to see that again.
Hi my dad has E39 his had a radiator and expansion tank replacement but sometimes his starts to over heat on the highway and it needs the coolant topping up sometimes and we can't find where the leak could be coming from and what's coming out the exhaust seems and smells fine what could be the problem.
hash morsal check auxfan and air in the system
Hey, I have the same problem did you guys find out what was the cause of it?
@@christian2371 does nathan every reply by chance?
Let me ask....I've been getting a p1111 code and was told it's the sensor at the bottom of radiator that you says controls the fan. I replaced and still gets the code. Now granted I eliminated the clutch fan cause it sounded like a bus and bought a electric fan to replace the clutch fan but left other electric fan there. So what actually could give me that code I've been getting. That and I got the p0172 and p0175 rich as well.
Check and clean IAC valve.
Here’s a new question for you, my expansion to pump hose quick connect broke. I replaced the entire hose from bmw.
It holds coolant until I start the car, it’s leaking somewhere onto all the drive belts and causing them to squeak. I pop the hood and there’s a bunch of steam and it’s leaking down onto the belly pan and dripping onto my ground about 2ft from where it’s actually leaking from. I don’t see the coolant leaking onto the belts or pulleys at all.
I’m stumped.
Thechristopherryan I had a over heated problem and the problem was a loose hose
I have replaced the water pump Wichita was broken and the thermostat. And my bmw still overheats at idle and driving. Please help me figure out what else to do or check. Thanks
Your thermostat is not opening so it's sticking. Sometimes when you buy a brand new thermostat at a parts store you have to check if it works. Basically take that brand new thermostat put it in hot boiling water in a pot in your kitchen and if the spring opens then you know you have a good thermostat.
So my 330i over heats and there's a leak when u pour coolent, it seems like it goes straight through and comes out the bottom, water pump is new
I found the problem, heater inlet pipe melted on my BMW
@@5280milehi as in radiator hose?
Nathan, in one of your videos, you mentioned DetoxIt Lithium Grease. Is there a particular reason you like this one over another one? This brand name is a new one to me.. Thanks
Seems weird it was the complete opposite for my bmw and i ran with just the fan clutch not the electric fan and never over heated while my car was on and parked
I have a 2003 530I (E39 I think). The temp gauge goes into the red within just about 5 minutes of driving it. Sometimes it stays in the red for a minute or two, sometimes only seconds. But it always goes back down, then back up again soon,, then back down and so on. I watched the whole video and this wasn't addressed. Any ideas?
thermostat
Update?
Hello everyone. I am a new bmw owner. I bought an 2001 E46 with 110k miles on it. It was fine for one week now there is smoke coming from the back of the engine. I checked the coolant and oil and it was full. Any idea what it could be?
redalert206 probably a valve cover gasket
Check the inside of the oil cap. If it has a milky white substance, it could be your ccv.
@@ashleyedwards9424 thank you, I'll check it out!
Does that way of bleeding the cooling system work on M62's too? I usually let it go at full fan speed with full heat for a while (until the "noise" is consistant, i.e the bubble noise goes away), then i'll start it, let it warm up, then build upp pressure with a few revs and use the bleeding screw. Rev and bleed until there's almost only coolant coming out. But if i can just do what you did, that'd make it much easier.
I have replaced the 2 hard coolant pipes that run under the intake I replaced the water pump the thermostat the coolant sensors and still overheat when I'm sitting still but when I start driving it gets very cold anything helps! The only thing I can think of is the radiator because I've replaced just about everything else and even gave it a pressure test and there's no leaks
Could be a broken thermostat or a broken water pump. Iv changed my radiator, expansion tank and the thermostat. And it still over heats only thing i can think of for you is the thermostat or water pump maybe a combo?
@@lookatme191 I’m pretty sure it’s his clutch fan not turning on when stopped he need an ELECTRICAL fan conversion or to replace his, seeing as he reaplced his water pump and his thermostat
@@diegom.9762 oh thats right, my car has an electric fan not the clutch fan and the thermostat that turns it on goes out and the fan wont come on.
Blown top hose on e46 325i. Lower hose less prone to it?
How do i fix the radiator hose gasket leak?
Usually the rubber hose slips from the plastic connector. Take rubber hose off the connector and replace the metal clamp with a reusable one. You can also replace the orings inside the plastic connector. Otherwise just order a new hose.
Huge overheating suddenly here. Could it be thermostat stuck closed? Fan working OK.
According to Nathan the thermostat usually fails in the OPEN position you diagnose the failure by the low 1/4 vs normal 1/2 temp reading
I love your videos man it helped a lot 💯👍🏾
This bimmer has a bit more coolant that it should have!
I’m so confused. So is your auxiliary fan supposed to be on even when the cars ac is turned off!?
NoisyMike Young depends
Hi Nathan, Hope you can help me out.
On my 2004 X5 3.0i, I have a brand new dealership thermostat. I run the engine idling, the temperature stays normal at 12 O'clock and my code reader shows the coolant at 205 degrees F. Thermostat stamp says 97 degrees C which is 207 degrees F. Doesn't matter what I do, the coolant never goes higher than 205, needle at 12 O'clock. So I can't bleed the coolant system completely because the thermostat never gets the chance to open. So I'm left with air pocket I can't get rid of. Is this normal? Hope not!
Please guide me through this.
Thanks,
P.S. The heater blows very hot air on the road and not so hot when idling
is the car cranked and running when you bleed it
Lower thermostat'
Thanks. Good info there. :)
Hi just want to ask something i have a coolant leak while driving (lower radiator hose) i call towing service but what caught my attention i started the car but the theres no reaction from the transmission while i put gas ( car is not moving) I really dont know what happpen or is there a connection? can this be fix? thank you.
Update?
Great vid..👍....what u do’in on the shop?
Hi I have a problem slight smoke is coming out from the back of engine, wen it’s turned on. Any advice will be helpful e39 2.2lt 2003 model thank you
very helpful video sir thank you !
I have a severe pouring out leak underneath when the engine gets hot on my N54 335xi
Why do new parts leak on these cars?.. wtf
awsome video very helpful!
My back lights stay on while I'm parked and key out. I changed brake switch and no change.
Thanks Man!!!
Thanks man
Excellent input!!!
My 02 325ci only has the clutch fan 😐 someone sold it to me like that and it was overheating. I checked the thermostat and it actually didnt even have a thermostat. So i installed it, changed the hoses cus they were old. And it hasnt overheated yet. I wonder if it eventually will cus the electric fan doesnt work
No, when you leave it parked stoplight etc. it will overheat. You probably already found that out lol
@@Yophillips3272 it did parked, not at stoplights tho, yet. Im already installing it this weekend tho. Also the radiator is fu#ked. They really messed up this cars cooling system.
Keep up the good work buddy bring her back to life. My 325 is slow to heat up and then overheats after 30 mins or so
@@7igerpr1nce i wish, dam transmission gave up. I have no idea how the prwvious owner treated that poor car it slowly went to shlt. Like the fixed it just enough for it to run and sell it, and once i started using it normally, it slowly fell apart. Literally , the bumper was held with screws, the side skirt was GLUED ON!!! I will never buy a car in that place again. But i learned my lesson, gotta take a mechanic when buyin a used car
@@mamonzote omg man I'm so sorry you had to go thru that brother.
Hi BMW folks. I want add some coolant. I’ve got an e46 316i how can check what color of a coolant my car uses. Red or Blue? Does it matter?
Thanks!
Rafaello Macchiato
Pentosin-blue. German mfg. you can purchase at Autozone or OReillys. $10-14 gal.
😎🇩🇪🚙
BirdogEd Cheers Buddy!
Got a E39 2001 525i it got a coolant flush before the start of the summer and a water pump gasket replacement, and it the temp gauge would move towards the second to right tick mark but as i picked up speed it went back, the mechanic said they couldnt find anything wrong with it, coolant is disappearing, and today as i got home from work i opened the hood as it was doing it again and i heard boiling from the bottom of the engine bay it sounded like, and wouldn't you guess it more coolant was gone i put more in, but I would like some info or help, please and thank you
You need a water pump. The impeller probably broke as it is PLASTIC. Replacing the gasket (o-ring), but leaving the old pump was a BAD IDEA. Don't drive the car until it's fixed.
@@stuartbear922 you had the same issue?
Head gasket or even a cracked head if youre unlucky. This could be expensive if its really that. Have the same problem as you. Buy a CO2 tester for your coolant water.
My dad got an e53 the freaking water spare tank keep leaking every time
You need a new expansion tank cheap easy fix
I have a problem where my e46 is overheating, the radiator doesn't get hot but the ET get pressurized and hot. Is it maybe the thermostat?
My radiator hose is pressurised aswell. Have you fixed it?
@@dragonmitchell15 yes, it was the thermostat
@@maltepettersson3083 Fair enough, suspecting mine aswell.
@@dragonmitchell15 its easy to change but a new thermostat is a bit of money
@@maltepettersson3083 45 euros over here, will change the cap aswell as top hose that is pressurized. I do maintenaince myself, thanks!
Thank's for the video. Can someone tell me whats the work temperature of the coolant for M52B20. Mine is 100-104 C in test 7. Should i've be concerned?
Димитър Димитров
You should be fine...my e39 touring runs around 200-208 *F all the time. 😎🇩🇪🚙
Has anybody had crankshaft sensor problems with a leaking plastic thermostat and coolant landing on the sensor wheel?
How to bleed the 540i ? Just started overheating
mine overheats when its cold/wet but is fine all through the summer.... can see the temp gauge fighting to get it back to normal temp before inevitably hitting the red, does this sound like a thermostat issue?
Interesting problem, my only guess is in summer time maybe your running the AC and when you turn Ac on it turns the cooling fan on.
ok, step sons BMW 1995 525i was overheating. I had it towed. Coolant level seemed good. But I changed the thermostat. Checked the old by boiling it. It worked and the replacemment didnt improve the results. Thinking possible faulty thermostat. Went to NAPA to get another thermostat. Changed again and flushed system because father inlaw said the bottom hose had no pressure but top was tight. Thinking it wasn't circulating . Started car and stayed on middle of gauge, not overheating but no hot air when turn on heat. Took for test drive and was in red within 2 miles. Father inlaw said the its not water pump because its not leaking. i said I'm not a pro on BMW's so I am not certain they have to leak to indicate that they don't work.. Seems to me that it may be the water pump. What would you think? Thanks for video. Someone else told me that it may be the silinoid because i don't have heat but would that cause overheat? Seems that would just keep from heat inside car, not overheating the vehicle. This is far different than my Chevy truck. I can work on it. (smile)
The m50 has a plastic impeller on the water pump, those can snap off, also you must belled the coolant system correctly I have videos up of that, sound like the system is full of air
Thanks, my father in law is great guy though we was working against each other in this job. He's 76 and when he says its common sense it is the gospel. I said yesterday that we need to figure out how to get the air out of it. I love the guy though. I'm thinking the pump needs replaced and will watch your video on how to get the air out. I seen the one valve on the radiator to purge it but it seems like there should or could use one spmewhere else because it seemed like air got everywhere. Thank u so much. Making my day much better. I enjoy working on cars but my first BMW experience though I love german engineered tools and cars/ just better.
when pricing a pump, it tells me you should replace fan clutch but it runs smooth as ever. May need cleaned but no vibration. I think I may just use the old one anyway.. Good idea/ or no? I'm not cheap but don't believe in buying thing just to have new.
In case someone else reads this, I would change the fan clutch too. They don't always vibrate when they fail, sometimes they just don't work and the fan doesn't spin at correct speed.
Outstanding!
Hey nathan! Thanks for the video! I have a quick question for you. My 2004 bmw e46 325i does not over until i start blasting the ac and makes a clunk nose. Any idea what it might be?
I’ve got the same problem on my 01e46
I thought it was a problem, But I learned that some models with the Webasto oil heater, does not have room for a rubber thing. So it is Your oil heater fuel pump. It should stop once Your car is hot
I have a 99 328i. I replaced water temperature sensor, both fans, water pump, thermostat, all the hoses and my car is overheating when I accelerate
Bleed it better
My E39 is dumping coolant, what should I do first?
Fix the leak.
Hi. I have a 525i 2003 E39. I'm having massive issues with overheating when in traffic. I think its the thermostat, which I will change. But... my water pump? I don't have that little spirting of water coming out from the top of the expansion tank when I turn the fan and heater on. Is that the water pump? Or could it be the smaller water pump at the bottom of the radiator?Thanks you!
That little spirting of water is created by an auxiliary water pump. I'm guessing yours isn't working which could cause overheating when stopped.
Edit: Actually I don't think that alone would cause overheating. And yes, that's the smaller pump at the bottom of the radiator.
Brilliant! Thank you very much for replying to me! While I got you, can I put all my current queries to you that I did send to Nathan on his FB page?
I bought a 525i E39 2003 BMW a few months ago. I done a lot of work to it to get rid of a few error messages but not have an issue with the cooling system. I have changed the raditator twice and am satifised that is not a problem.
I have also changed the thermostate (a cheaper one from a UK supplier) and think this could be one of 4 issues. My auxilliry fan does not seem to be working (have not fully looked into it yet). Also, when the fan is set to hot and is blowing, there is NOT a little jet of coolant coming out from the top of the expansion tank. What is faulty? The water pump or the electric water pump attached to the bottom of the fan shroud?
Also... (sorry), it over heats whe sitting in traffic. When driving, it cools down. But when coasting at around 60mph (in neutral), the temp still increases, leading me to think that although the aux fan is not working, this is not the main problem. Otherwise the natural airflow would still cool the car down. Would that be the thermostat not opening fully? Or the water pump not working properly? Or both?
Heater hose valve under the intake. Lmao have fun
I have a 2004 325 e46 . When I drive it , it leaks water from the top hose (side connected to radiator)but it never heats up . But the light comes on that it needs water , I changed the top water hose and thermostat what can it be?
ET cap!!
Sorry . I tried googling ET cap and not sure what it is . Can you spell all of it for me ? Thank you In advance
@@kathyavalos7233 expansion tank cap/coolant reservoir cap. It has built in pressure safety mechanism that could be faulty
@@kathyavalos7233 btw, what is never heating up? The engine or the radiator?
@@kathyavalos7233 have you checked the actual temperature with a obd2 tool?
Common problems with BMWs , EVERYTHING
i own e39 525d for 2 years now and it always has problems....this car will never be perfect....even if you fix everything in 1 days, new problems will start comming up....i just gave up and stoped fixing it....
Actually your coolant level is way overfilled, E39 doesn't have two ball messure float. Correct level is when the float tip is leveled with the upper edge of the filler opening. Merry Christmas.
If you do that and you have any tiny leak it will run too low and get air in the system and overheat
I wondering if can share some light on my e39 528i leaks from the cap when it hit car temperature only from the coolent cap
Could be a crack in the reservoir near the threads
Hello. My e39 525 touring is loosing coolant. There’s no obvious leeks and the car NEVER overheats. Just works it’s way to the middle and stays there. There’s no white smoke from exhaust. Just looks like the kettle is boiling with steam vapour coming out exhaust. Help?
David Lock I have a 325i Touring, same issue. Losing coolant in small batches, no overheating, no obvious drips. I bought a coolant expansion tank and cap. I am thinking I should also change the oring from connector to radiator and maybe level sensor? What is most likely to leak?
great gardengnome to be on safe side and peace of mind would probably change the o ring like you said. That’s a good idea to buy expansion tank and so on, if you go ahead with this will you keep me posted please ? Does your exhaust looks like someone is boiling a kettle with all the steam vapour ?
my 325 leaks from one of the tubes coming from aux water pump to heater core. The leak can't be noticed regularly because those other tubes are under the intake and the leaked water gets catched and evaporates before it could touch the ground. So there are many places to check for a coolant loss. You may get your cooling system pressurised and just watch it in a garage...
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you talk too much
You listen too little.
Lmao