FYI to everyone. This solved my starting issue on my 1989 260E. However, the exact same problem occurred again a year later and this time it was not the fuel pump relay. When testing the relay, it performed just like in this video. I got another new relay, but still the car would take a couple of minutes to start. The only way to start the car right away was with the relay bridged with a wire. On another attempt to start the car with the bridged wire, I could no longer hear the fuel pump running and the car would take a couple minutes to start with the abs light on and the rpm's very low. Once the car reached operating temperature, it would idle normal and the abs light would turn off. So the culprit this time was the OVP relay. It was difficult to diagnose, because it would intermittently work and most of the functions of it worked most of the time. What eventually happened though was that it cut the power to the ECU and so it wasn't sending a signal to the fuel pump relay. So my advice is to get a new OVP relay as a spare and to help with diagnosing. Honestly they aren't very expensive and having one on hand can be very helpful in pinpointing a problem. Hope this helps anyone struggling to diagnose their hard starting problem. Cheers!!
Bought a 1989 260E that took a couple of minutes to start each time. Once the car was running, the abs light was on and the rpm's were very low. Tested the OVP relay and it seemed to work fine. Followed what you did in this video and my car fires right up:) I talked the previous owner down by $2800.00 because of the starting issue and I'm very happy it was a simple and inexpensive fix!! Many thanks!!
Dude omg I've been chasing this f***ing thing for a year now replacing temp sensors and then yesterday after replacing fuel filter/accumulator and it still not working I found these hidden relays. Thank you very much I can't explain how good it feels to put this one behind me
Thank you ! I lived that parts-chasing thing myself the first time (on a 1989 260E) It was incredibly frustrating, and yet, once I learned the fuel relay thing, it has fixed hard-starting and stalling issues on so many cars. I hope it gets you back on the road and enjoying your Mercedes!
I am not good in electicity but with your video you have explain everything clearly and now i now why my fuel pomp is not working:) Big Thanks and greeting from Poland!
It was my dear, today i just finished swapping my 124 from m102 2.0 to m102 2.3 , and there is one thing im not sure about, when driving and applying half throttle the car feel weak, once i put full throttle every thing goes back to normal, what could it be? Oxygen sensor ?
@@FlashDriveFilms excellent video clip, will be my savior in the middle of the highway. Thank you so very much. Would you kindly do a video for AC compressor relay?
Just retrieved my '89 230 TE (UK car) using exactly this fix - wife was broken down ~3mi from home and this got us back so THANKS! I can see some grey dust near Pin #30 so I will re-solder it and see if it works - these parts are $$$$ (£££££££ - always more expensive in the UK)
Superb! Outcomes like this make my RUclips efforts worthwhile, knowing my videos can go any places and help people anywhere. (and now your wife believes you are a Champion!)
Nice video, I was under the impression North American w201's were all 6 cylinders since 4 cylinders were kinda frowned upon there in those days. Learn something new every day.
Thanks! Until the late 80s, most W201s in USA were 4-cylinder. Either the anemic 2.3 gas, or the 2.2 Diesel models. The 2.6 cars were later. All the 4-cylinder cars are slow, Something like 12seconds 0-100kph, and almost 20 seconds for the Diesels. But they were fairly high spec, with automatic transmissions, A/C, ABS, power seats, windows and sunroof. All were fuel injected, unless privately imported "grey market" versions.
@@FlashDriveFilms things were worse in Australia - they made a 1.8 litre version for us 😂 That is the definition of slow, you have to use the first gear start just to keep up with grandmothers getting up to 60km/h. Truly bizarre decision by benz there. the 2.6 is rare here and was very expensive.
I HIGHLY recommend that the flexible rubber coupling is replaced if you haven't done it yet. They deteriorate over time until the driveshaft falls out the bottom of your car! I know this from experience...
Its also help with w123 relay. I think if u have other mercedes with 87 and 30 pin on relay it will work too, but be carefull and check first wiring diagram for your car.
A+ for the great effort on documenting the repair As a W124 owner i had to create an external 40A relay circuit that would run the pump with key on priority. Unfortunately it's the way to go as the KZL relay board give it'slocation is prone to a consistent overheat situation resulting in a frail board and soldered pins breaking free.
Thanks! Yes, that is the problem with most automobile electronics: you want them close by their task to avoid voltage drop, but then they often share space under the hood in the harshest spaces, filled with moisture, heat and vibration stresses. It's no wonder circuit boards fail.
Thank you for this , my car stalls coming to lights sometimes and when I turn suddenly right it instantly cuts out , another gentleman man told me it could be a loose connection where the fuel pump relay sits, so I will need to check that then check the solder on the board , my car is a 1990 2.6 so it has everything combined in the MAS relay
Yes, even with the newer MAS system, a loose connector or bad ground, or even older fuse, is enough the stall out the pump relay. Definitely check those connectors and fuses.
As always your a rockstar. My car was showing these symptoms and my uncle down in Florida was telling me to tell the mechanics to do this job. It sounded like a difficult job (which obviously it isn't) they charged me for the fuel pump relay $225 and put on the sheet it took them an hour so total was $325 for 10 min job. lol :( *****
YIKES! $325! Well, look on the bright side: the dealership would have charged you Twice as much, and also you will also never have to pay that again, now that you know how to do it.
@@FlashDriveFilms this was a whole in the wall mechanic that doesn’t specialize in Mercedes. I could of went to a mechanic that specializes in Mercedes and it would of cost me half that. This guy put on the paper work it took him almost 40 minutes. 😂
@@FlashDriveFilms I get it people have to make money it wasn’t the only thing the replace he charged me $225 for the part and at $165 an hour he charged me $110 in labor. They also changed out other parts. Total bill was about $700.
A lot of repair shops not only have expensive tools, but then *subscriptions* that the factory makes them pay in order to access diagnostic programs. So they spread that cost over things that don't need electronic diagnostics/OBDII etc, So things like belts, filters and fluid changes get the price raised higher to help offset the times the shop needs to analyze things like fuel injection & climate control. That's where my videos can help with the mundane service /maintenance you can do yourself. And save the Big Bux repairs for the computerized gadgets.
Excellent question! I don't think I've ever seen an M104 in a W201 chassis. That's the twin cam straight six, and all the USA 190E that I am familiar with have either the M102 4 cylinder or the M103, SOHC six engine. The M104 was in the R129 & some W124 cars, so I'm not 100% sure on the fuel pump relay for them.
Hi great video, i have taken my fuel relay out the nunbers are 003 545 19 05 cant find a replacement with same nunbers will the new 003 545 20 05 fit, manual gear box
I'm just not familiar enough with the various part numbers. (Mercedes has absolute dozens over the eyars for various configurations) If the number of pins matches, in general , it will run the fuel pump. However, it may have different circuitry for things like the cold start valve and rpm over-run when shifting gears. The fact the new par ti sonly one digit different does make me optimistic that it may just supersede the old one and work fine.
Thank you for this video, however my Mercedes 190E 2.3 m102 (4 cyl - 8 valve) 1993; has 10 pins in total, 6 in one row, 4 in the other row. Did MB change the pin out during the 190E years?
Yes, depending on the year and what market it was sold. In, (USA, Europe, Africa etc) the number and function of the pins did change. By 93 there was a cold start valve ( essentially a fifth fuel injector) with its own electronics altered for newer emissions requirements in some markets. That may be why your relay is different. Or you may have the relay from a different model that has been previously swapped in. The center pins still power the pump from the key.
I suppose it is possible, but fuel pumps usually fail from overheating or getting corrosion jams. If the fuel pump ran continuously it would eventually burn out. Same thing if it was run dry without any fuel going through it.
I got the same problem with starting the engine but after I pluged out the relay I was confused. My 190e Is 4cyl and my relay has 6 pins. Can you give me some advice please? Thx
I don't think I've ever seen one with just 6 pins. If your 190E is a manual transmission and has a carburetor, it might lack the circuits for things like transmission kick-down and the cold start injector. The 2 center pins should still be the power jumper for the pump though.
Hard to say. The relay does control the Cold Start circuit on some cars, but if you hear the pump and have fuel in the car, I would check for spark/ignition issues next.
I have a Mercedes W124 250D. The car sat for one month without starting. When I started the car after, it didn't start. The engine spins and cranks but don't start. Before that, it would start without any problem. What could be the reason why the engine won't start?
There are so many possibilities. The 250D is a Diesel engine, that doesn't have the fuel pump relay like the gasoline versions. If it sat for a while, I would suggest putting a charger on the battery and making sure the glow plugs are working. You may have to crank the engine a lot to get the fuel up to the motor if it has drained back from sitting. Usually with a diesel it has to do with either temperature or fuel quality. Make sure the air intake is clear and that nothing (mice, insects) has set up a nest in it. You might try changing the fuel filter , filling it will fresh fuel before installing. (It is really hard to diagnose these things over the internet) Best of luck.
Depending on your year, you might not have one. Some W124 models, as soon as 1986, a has Mass Airflow Sensor system in its' place. Look in the same region under the hood (in front of the passenger side, perhaps under a plastic cover) and amongst the other relays (like the OVP) you would find a taller, shiny chrome module with a tell-tale black plastic knob on the top middle.(Google "Mercedes W124 MAS" and look at images) If your car has that system, my video can't really help you.😔
Salve sono un possessore di una w 124 200E ho un problema quando il motore e caldo.... Non si accende.... Ci vuole un bel Po' .... Cosa potrebbe essere grazie.
Difficile da dire. Se è iniettato carburante, controllerei il circuito della valvola di avviamento a freddo. Se è a carburatore, potresti avere un problema con il blocco del vapore.
I can't understand how many relays there are in Mercedes. Which coded relay should I use for my 1987 300 sel automatic? 003 545 24 05, 002 545 52 05, 002 545 27 05, how can I tell which is the original relay of my vehicle?
I honestly don't know the original part number of your fuel pump relay. There are so many, based on what market the car was originally sold in, and what upgrades were made to the relay over the years. You actually don't want the original number as it would be so old now the capacitors are probably shot. The relays did evolve over the years, doing the same things with newer components. Things like MOSFETs and Surface Mount Devices (SMD) that weren't widely used in 1987. Hopefully someone in the comments section has a cross reference for you car and will chime in.
I honestly don't know. I've never had a W123. I made the jump from 1W115 & 116 cars right to W201, W124 & even an R129. Never got the chance to really know the W123s.
Hello, do not be bored, engineer, if possible, the wiring diagram of the Mercedes engine w124 230e m102 Send it to me, I need it very much, I am from Iran, the wiring map can not be found here at all. Thank you.
Hello! I do not have the M102 engine wiring diagram for W124. They did not sell that model 230E in my country. I only have some things for M103 and M104 6 cylinder engines. They are old and incomplete. Sorry I could not help.
Outstanding I subscribed cuz I ain’t nothing but a thing and my 1995 E420 cranks but it ain’t a starting. When my buddy owned a dealership he came across said vehicle and hooked his brah up paid 600 at auction holmes I did the circle jerking with copper around the relay behind the dashboard, thought car wouldn’t turn over because of the alarm. However dickhead at Mitchel Brahs found my fuel pump and shit defunct fuel pump and filter 800 dollas 300 to change dashboard light asked fellas how much for new rotors and brakes for rear. Says I don’t know who knows what we’ll find. So dank yu very much gonna find the relay related to fuel pump do the listening but ain’t messing with the cooper circle jerking bypass whatever
Reminds me of my mb190e 2.6 that lost the plus wire to the fuel pumps, it has 2 but can run with 1,so i had to rewire the plus wire from the cigaret lighter back to the fuel pumps
FYI to everyone. This solved my starting issue on my 1989 260E. However, the exact same problem occurred again a year later and this time it was not the fuel pump relay. When testing the relay, it performed just like in this video. I got another new relay, but still the car would take a couple of minutes to start. The only way to start the car right away was with the relay bridged with a wire. On another attempt to start the car with the bridged wire, I could no longer hear the fuel pump running and the car would take a couple minutes to start with the abs light on and the rpm's very low. Once the car reached operating temperature, it would idle normal and the abs light would turn off. So the culprit this time was the OVP relay. It was difficult to diagnose, because it would intermittently work and most of the functions of it worked most of the time. What eventually happened though was that it cut the power to the ECU and so it wasn't sending a signal to the fuel pump relay. So my advice is to get a new OVP relay as a spare and to help with diagnosing. Honestly they aren't very expensive and having one on hand can be very helpful in pinpointing a problem. Hope this helps anyone struggling to diagnose their hard starting problem. Cheers!!
Excellent advice! The OVP relay is often on the list of 'Usual Suspects" when trouble-shooting Benz electrical problems.
What is an OVP relay?
@@bikeman123 Over Voltage Protection Relay. Watch the video at 1:15 mins.
This is a great video that helps Mercedes-Benz owners.
Bought a 1989 260E that took a couple of minutes to start each time. Once the car was running, the abs light was on and the rpm's were very low. Tested the OVP relay and it seemed to work fine. Followed what you did in this video and my car fires right up:) I talked the previous owner down by $2800.00 because of the starting issue and I'm very happy it was a simple and inexpensive fix!! Many thanks!!
Music to my ears. It's the exact reason I make these videos. Thank you for letting me know of your success!
Very detailed video, straight to the point, followed by a warm and stressless voice.Very well done !!!
Thank you! This one was fun to make, and I really enjoyed it. I hope it helps fix a common issue with older Mercedes cars.
@@FlashDriveFilms is it possible to email you?
Dude omg I've been chasing this f***ing thing for a year now replacing temp sensors and then yesterday after replacing fuel filter/accumulator and it still not working I found these hidden relays. Thank you very much I can't explain how good it feels to put this one behind me
Thank you ! I lived that parts-chasing thing myself the first time (on a 1989 260E) It was incredibly frustrating, and yet, once I learned the fuel relay thing, it has fixed hard-starting and stalling issues on so many cars. I hope it gets you back on the road and enjoying your Mercedes!
Insanely good production for a relay video!
Thanks! It is such a common and inexpensive fix, I really enjoy helping put people back on the road at a low cost.
I am not good in electicity but with your video you have explain everything clearly and now i now why my fuel pomp is not working:) Big Thanks and greeting from Poland!
Excellent!! I always hope to reach people I would otherwise never meet and help them to keep their car on the road.
Thank you - Legend you have made the world a better place - each upcycled Benz is one less "new disposable car"
Thank you! My thoughts exactly. Defy the Crusher. Older Mercedes are fine cars that respond to care and reward the owners who look after them.
Very clear and straightforward! Thanks for this video!
Thank you! It's an easy fix I wish more owners knew about.
You were extremely helpful, and your voice is just on point. Thank you
Thank you! I am glad it helps.
It was my dear, today i just finished swapping my 124 from m102 2.0 to m102 2.3 , and there is one thing im not sure about, when driving and applying half throttle the car feel weak, once i put full throttle every thing goes back to normal, what could it be? Oxygen sensor ?
@@FlashDriveFilms excellent video clip, will be my savior in the middle of the highway. Thank you so very much. Would you kindly do a video for AC compressor relay?
Excellent teaching.
A masterful technician.
Precise and to the point.
Thank you sir.
Thanks! I had fun making this one.
Hey really perfect timing. Yes I found a real solution for my w124 200E vehicle. Thanks.
That is excellent. The fuel pump relay seems to be a very common failure on this generation of Benz.
@@FlashDriveFilms
Yes, it is a common problem. Does this relay have an idle state balancing function? Will a cold engine help choke?
Very helpful video! Well detailed and shooting straight to the point. Thanks for your effort n time.
Thanks! I'm glad you liked it! I really enjoyed making this particular one.
@@FlashDriveFilms most welcome
Just retrieved my '89 230 TE (UK car) using exactly this fix - wife was broken down ~3mi from home and this got us back so THANKS! I can see some grey dust near Pin #30 so I will re-solder it and see if it works - these parts are $$$$ (£££££££ - always more expensive in the UK)
Superb! Outcomes like this make my RUclips efforts worthwhile, knowing my videos can go any places and help people anywhere. (and now your wife believes you are a Champion!)
Nice video, I was under the impression North American w201's were all 6 cylinders since 4 cylinders were kinda frowned upon there in those days. Learn something new every day.
Thanks! Until the late 80s, most W201s in USA were 4-cylinder. Either the anemic 2.3 gas, or the 2.2 Diesel models. The 2.6 cars were later.
All the 4-cylinder cars are slow, Something like 12seconds 0-100kph, and almost 20 seconds for the Diesels. But they were fairly high spec, with automatic transmissions, A/C, ABS, power seats, windows and sunroof. All were fuel injected, unless privately imported "grey market" versions.
@@FlashDriveFilms things were worse in Australia - they made a 1.8 litre version for us 😂 That is the definition of slow, you have to use the first gear start just to keep up with grandmothers getting up to 60km/h. Truly bizarre decision by benz there. the 2.6 is rare here and was very expensive.
Fantastic video. Thank you, helped me a lot
Thank you ! Glad it helped!
Great video as ever thanks 👍👍
Glad you enjoyed it!
Thanks from EGYPT. 🙋♂️
Mercedes are all over the world. Glad to help people wherever they are!
that is brilliant many thanks for posting.
Thank you! I really enjoyed making that video.
Fantastic video. Thank you.
Glad you enjoyed it!
SO beautiful Thanks
I HIGHLY recommend that the flexible rubber coupling is replaced if you haven't done it yet. They deteriorate over time until the driveshaft falls out the bottom of your car! I know this from experience...
Fantastic stuff thanks a lot !
Glad you liked it! This was one I had fun making.
Excellent 👌
Its also help with w123 relay. I think if u have other mercedes with 87 and 30 pin on relay it will work too, but be carefull and check first wiring diagram for your car.
Excellent point. I think there are even W126 cars from the mid-80s that may use a similar relay. Always best to check you particular configuration.
Super spannend 😉 thank you
Thank you!
A+ for the great effort on documenting the repair
As a W124 owner i had to create an external 40A relay circuit that would run the pump with key on priority.
Unfortunately it's the way to go as the KZL relay board give it'slocation is prone to a consistent overheat situation resulting in a frail board and soldered pins breaking free.
Thanks! Yes, that is the problem with most automobile electronics: you want them close by their task to avoid voltage drop, but then they often share space under the hood in the harshest spaces, filled with moisture, heat and vibration stresses. It's no wonder circuit boards fail.
@@FlashDriveFilms So True! These did well for 30 years into the oven :)
What is a KZL relay?
Great video sir 👏
Thank you! Glad you enjoyed it!
OK thank you 🥰🤗😘
Thank you very much
Best regards
Glad you liked it. I really enjoyed making this one.
Thank You very much.💯👍👍
Welcome 👍
Thank you for this , my car stalls coming to lights sometimes and when I turn suddenly right it instantly cuts out , another gentleman man told me it could be a loose connection where the fuel pump relay sits, so I will need to check that then check the solder on the board , my car is a 1990 2.6 so it has everything combined in the MAS relay
Yes, even with the newer MAS system, a loose connector or bad ground, or even older fuse, is enough the stall out the pump relay. Definitely check those connectors and fuses.
Great!
Glad you liked it. I had fun making this one.
As always your a rockstar. My car was showing these symptoms and my uncle down in Florida was telling me to tell the mechanics to do this job. It sounded like a difficult job (which obviously it isn't) they charged me for the fuel pump relay $225 and put on the sheet it took them an hour so total was $325 for 10 min job. lol :( *****
YIKES! $325! Well, look on the bright side: the dealership would have charged you Twice as much, and also you will also never have to pay that again, now that you know how to do it.
@@FlashDriveFilms this was a whole in the wall mechanic that doesn’t specialize in Mercedes. I could of went to a mechanic that specializes in Mercedes and it would of cost me half that. This guy put on the paper work it took him almost 40 minutes. 😂
@@FlashDriveFilms I get it people have to make money it wasn’t the only thing the replace he charged me $225 for the part and at $165 an hour he charged me $110 in labor. They also changed out other parts. Total bill was about $700.
@@FlashDriveFilms my biggest concern is they didn’t even show me my old parts so for all I know they didn’t do shit after rapping me 🤯
A lot of repair shops not only have expensive tools, but then *subscriptions* that the factory makes them pay in order to access diagnostic programs. So they spread that cost over things that don't need electronic diagnostics/OBDII etc, So things like belts, filters and fluid changes get the price raised higher to help offset the times the shop needs to analyze things like fuel injection & climate control. That's where my videos can help with the mundane service /maintenance you can do yourself. And save the Big Bux repairs for the computerized gadgets.
Nice Job danke
Thanks! I had fun making this one.
Thanks
Glad you liked it. I had fun making this one.
btw, if you still have this car you can get a new LCD for that temp indicator on ebay
Good to know. Thanks!
You are a great teacher mate :). I have a m104.98x i wonder if the pins are the same to short to get fuel pump running ..?
Excellent question! I don't think I've ever seen an M104 in a W201 chassis. That's the twin cam straight six, and all the USA 190E that I am familiar with have either the M102 4 cylinder or the M103, SOHC six engine. The M104 was in the R129 & some W124 cars, so I'm not 100% sure on the fuel pump relay for them.
m104.980 you have to use the pins 1(circuit30) & 2 (circuit 87)
Hi great video, i have taken my fuel relay out the nunbers are 003 545 19 05 cant find a replacement with same nunbers will the new 003 545 20 05 fit, manual gear box
I'm just not familiar enough with the various part numbers. (Mercedes has absolute dozens over the eyars for various configurations) If the number of pins matches, in general , it will run the fuel pump. However, it may have different circuitry for things like the cold start valve and rpm over-run when shifting gears. The fact the new par ti sonly one digit different does make me optimistic that it may just supersede the old one and work fine.
Thank you for this video, however my Mercedes 190E 2.3 m102 (4 cyl - 8 valve) 1993; has 10 pins in total, 6 in one row, 4 in the other row. Did MB change the pin out during the 190E years?
Yes, depending on the year and what market it was sold. In, (USA, Europe, Africa etc) the number and function of the pins did change. By 93 there was a cold start valve ( essentially a fifth fuel injector) with its own electronics altered for newer emissions requirements in some markets. That may be why your relay is different. Or you may have the relay from a different model that has been previously swapped in. The center pins still power the pump from the key.
@@FlashDriveFilms Hey just wanted to say thanks! Finally got the correct pin layout for my 190E and the fuel pump was entirely the culprit.
HI ! two of my new Bosch fuel pump died in 5 months does the relay can be the issue in that case ?
I suppose it is possible, but fuel pumps usually fail from overheating or getting corrosion jams. If the fuel pump ran continuously it would eventually burn out. Same thing if it was run dry without any fuel going through it.
I got the same problem with starting the engine but after I pluged out the relay I was confused. My 190e Is 4cyl and my relay has 6 pins. Can you give me some advice please? Thx
I don't think I've ever seen one with just 6 pins. If your 190E is a manual transmission and has a carburetor, it might lack the circuits for things like transmission kick-down and the cold start injector. The 2 center pins should still be the power jumper for the pump though.
I hear the noise indicating the fuel pump check but the car won’t start, could it still be this relay?
Hard to say. The relay does control the Cold Start circuit on some cars, but if you hear the pump and have fuel in the car, I would check for spark/ignition issues next.
I have a Mercedes W124 250D. The car sat for one month without starting. When I started the car after, it didn't start. The engine spins and cranks but don't start. Before that, it would start without any problem. What could be the reason why the engine won't start?
There are so many possibilities. The 250D is a Diesel engine, that doesn't have the fuel pump relay like the gasoline versions. If it sat for a while, I would suggest putting a charger on the battery and making sure the glow plugs are working. You may have to crank the engine a lot to get the fuel up to the motor if it has drained back from sitting. Usually with a diesel it has to do with either temperature or fuel quality. Make sure the air intake is clear and that nothing (mice, insects) has set up a nest in it. You might try changing the fuel filter , filling it will fresh fuel before installing. (It is really hard to diagnose these things over the internet) Best of luck.
Where else would it be located I've been looking and nothing
Depending on your year, you might not have one. Some W124 models, as soon as 1986, a has Mass Airflow Sensor system in its' place. Look in the same region under the hood (in front of the passenger side, perhaps under a plastic cover) and amongst the other relays (like the OVP) you would find a taller, shiny chrome module with a tell-tale black plastic knob on the top middle.(Google "Mercedes W124 MAS" and look at images) If your car has that system, my video can't really help you.😔
Salve sono un possessore di una w 124 200E ho un problema quando il motore e caldo.... Non si accende.... Ci vuole un bel Po' .... Cosa potrebbe essere grazie.
Difficile da dire. Se è iniettato carburante, controllerei il circuito della valvola di avviamento a freddo. Se è a carburatore, potresti avere un problema con il blocco del vapore.
I can't understand how many relays there are in Mercedes. Which coded relay should I use for my 1987 300 sel automatic? 003 545 24 05, 002 545 52 05, 002 545 27 05, how can I tell which is the original relay of my vehicle?
I honestly don't know the original part number of your fuel pump relay. There are so many, based on what market the car was originally sold in, and what upgrades were made to the relay over the years. You actually don't want the original number as it would be so old now the capacitors are probably shot. The relays did evolve over the years, doing the same things with newer components. Things like MOSFETs and Surface Mount Devices (SMD) that weren't widely used in 1987. Hopefully someone in the comments section has a cross reference for you car and will chime in.
Its safer and easier to jumper the socket pins to run the fuel pump without fitting the relay.
can i use w124 fuel pump relay for w123?
I honestly don't know. I've never had a W123. I made the jump from 1W115 & 116 cars right to W201, W124 & even an R129. Never got the chance to really know the W123s.
@@FlashDriveFilms i see, thanks for the reply
Hello, do not be bored, engineer, if possible, the wiring diagram of the Mercedes engine w124 230e m102 Send it to me, I need it very much, I am from Iran, the wiring map can not be found here at all. Thank you.
Hello! I do not have the M102 engine wiring diagram for W124. They did not sell that model 230E in my country. I only have some things for M103 and M104 6 cylinder engines. They are old and incomplete. Sorry I could not help.
@@FlashDriveFilms Ok thank you very much
Aslamualkom tuan tolong bg No tell & Alamat untuk saya kunjungi Bengkel tuan
Outstanding I subscribed cuz I ain’t nothing but a thing and my 1995 E420 cranks but it ain’t a starting. When my buddy owned a dealership he came across said vehicle and hooked his brah up paid 600 at auction holmes I did the circle jerking with copper around the relay behind the dashboard, thought car wouldn’t turn over because of the alarm. However dickhead at Mitchel Brahs found my fuel pump and shit defunct fuel pump and filter 800 dollas 300 to change dashboard light asked fellas how much for new rotors and brakes for rear. Says I don’t know who knows what we’ll find. So dank yu very much gonna find the relay related to fuel pump do the listening but ain’t messing with the cooper circle jerking bypass whatever
This channel or excuse me whatever utube calls your videos have a PBS tone feel whatever could be my hash infused diesel doobie dough
Reminds me of my mb190e 2.6 that lost the plus wire to the fuel pumps, it has 2 but can run with 1,so i had to rewire the plus wire from the cigaret lighter back to the fuel pumps
Thank god i had 2 reles, had to cut pin 13
Now when you turn the key the pumps are running non stop untill you turn the key again