om642

  1. D

    W204 C350cdi radiator fan issue

    Hi, new to the forum so apologies if this isn’t the correct area for my question/issue. So I’ve got this problem where the radiator fan will just come on intermittently when the car is locked, I could wake in the morning to it turning on and off, I’ve had it in with an indi specialist but not...
  2. S

    W211 OM642 Smoking and losing oil

    Hey. I got a W211 OM642 engine. I changed turbo once because it was dragging oil into exhaust, brand new turbo. After change i have to fill oil every 5-6 days. I have changed the crank ventilation, and this cover behind, and still no changes. It Smokes much. Looks like i create a fog behind me...
  3. N

    Mercedes E350 CDI 2010 Starting, Temperature issues.

    Hi All, I've been having a few issues with my recently purchased 2010 e350 coupe OM642.83 (93k miles). No codes showing. 1) The car struggles to start on first cold start but then remains fine for the rest of the day. Glow plug lights go off straight away as they should, and both plugs and...
  4. C

    Leak oil line/fuel return line placement OM642

    So I foolishly snapped the plastic connector while swapping thermostat and had to get a new one of these (£90!), the old one is sandwiched on the right side underneath some injector lines and the rail. Seems like a lot of work to take all these off, any problem with running the new line over the...
  5. R

    E350 engine change

    Hi I’ve changed the engine on my friends e350. om642 ive got a fault coming up with cam sensor hall b6/1 I’ve check the wires and scoped the sensor and all is looking ok. But the car struggles to start and goes into limp mode. I’m wounded does anyone know if I would need the ecu of the...
  6. C

    C320 cdi OM642 sometimes loses boost

    Hi guys, new here and these forums have proved helpful for various jobs but I’m struggling to find the info I need. The issue is that I occasionally lose boost, sometimes cruising on cruise control, other times when accelerating hard to overtake and then the boost goes and I’m dead in the water...
  7. allybassman

    722.9 Auto Gearbox issue *Juddering*

    Hi All, Strange issue that my 2012 C Class (58k miles) has developed - Upon light load on the engine (keeping pace with traffic between 30-50 MPH I have started to feel the car judder. Accelarating is fine, the gearbox changes smoothly, doesn't hold onto gears too long and behaves normally...
  8. B

    Turbo pedestal part # 6420961745

    hello all, I have gone through the pains of replacing the oil cooler seals... however when I got to the valley the oil cooler and the block is squeaky clean. Not only that but the existing seals are the updated purple ones. Oil and gunk stains are on the transmission but nothing on the engine...
  9. G

    Ultimate OM642 build (2009 R320L CDI, 7G-Tronic)

    Right, to recoup the story, here is the copy of my introduction post.. Hello everyone, I'm new to this forum but not new to MB in general...Born and raised in the family of Mercedes lovers that started in the early 90s with W123 and continued through out the years, I am currently the proud...
  10. G

    Hello everyone...2009 R320L CDI..help and advise greatly appreciated..

    Hello everyone, I'm new to this forum but not new to MB in general...Born and raised in the family of Mercedes lovers that started in the early 90s with W123 and continued through out the years, I am currently the proud owner of 2009 R320L CDI bought in mid September 2017 with obviously OM642...
  11. jeremy156

    2010 W212 E350 CDI OM642 - cooling fan running

    Hi all, I'm sometimes noticing that the radiator cooling fan is running at the end of a run when I wouldn't expect it. I don't know whether it's running throughout - I just notice it as I slow enough to hear/notice it. This has been on perfectly normal warm-ish days (16-18 degrees C) with...
  12. B

    om642 320 cdi fuel rail sensor location

    Afternoon all, could anyone help me with the location of the fuel rail sensor location? Part number is Bosch 0281002504 - it also fits lots of VAG models Mercedes ref is A0041536728 Also the location of the pressure control valve if possible - Mercedes ref A6420740184 I have fault...
  13. T

    need more fuel from the injectors!

    hi guys and girls, I REALLY hope that you can all shed some light on this for me! I have a 2010 vito 3.0 V6 TD with the OM642 engine. we`ve been playing silly buggers with it but we`ve hit a brick wall.......need more fuel. had it mapped, tuned etc etc but the rail pressure and injectors are...
  14. Y

    Anyone selling a om642 engine also do they differ depending on bhp

    Hi all my car needa a new engine knocking and smoking terribly and metal fillings in oil filter, quiet a few mercedes have the same engine eg 350 cdi 320 cdi 300cdi 280cdi but the bhp is different is that only due to ecu or is the internals in the engine different they all have the same code...
  15. zedmeister

    OM642 320CDi rail pressure too low

    Still having trouble with my car - as a standard diesel, it jerks with lack of power only when cold. When warm it runs fine. When the Brabus D6 unit is refitted it is completely undriveable as the jerking occurs even at half throttle and then throws the engine management light on with the...
  16. zedmeister

    OM642 320CDi rail pressure too low

    Hi Well I'm having fun with my OM642 as well. After changing endless bits in the last year for various fault codes that have cleared up those issues (such as exhaust back pressure sensor, lambda sensor, Air mass sensor, etc) I am currently left with: 2047 Rail Pressure monitoring via volume...

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