Mercedes E class 220 cdi engine trouble

Discussion in 'Engine' started by Adrian_Merc, Oct 1, 2011.

  1. Adrian_Merc

    Adrian_Merc New Member

    Messages:
    3
    Joined:
    Jan 13, 2010
    Location:
    garvagh n.ireland
    I have 2001 mercedes e class 220 cdi and recently i have been getting loss of power at random times and now the car has a very rough idle and engine shakes quite alot . when it cold it sounds like it nearly going to die out . The miles on the car is 181k

    Could any body advise me what could be wrong with the car and how much would it cost to repair the car . i been told it could be the timing chain ,

    please help
     
    Last edited: Oct 1, 2011
  2. BoyracerAU

    BoyracerAU Active Member

    Messages:
    218
    Joined:
    Apr 4, 2011
    Location:
    Sydney South
    Car:
    1985 W123 230E & 1994 R129 SL500
    I would check all the sensors to make sure they're plugged in correctly as a start.

    My car was idling roughly not long after I got it back from the mechanics and I discovered a sensor on the air intake had slipped out. I plugged it back in securely and all was well.

    Fingers crossed your problem can be as easily sorted!
     
  3. Tinkerer

    Tinkerer Active Member

    Messages:
    391
    Joined:
    May 5, 2011
    Location:
    Norfolk
    Car:
    W210 E220 CDi
    I had the same problems with mine so bought a new MAF sensor off ebay this cure the limp mode and rough running but left the car surging when in traffic between 30-40 mph.

    So did an Olly on it and had it checked out on Star, finger pointed at MAF sensor 'why did I not buy from MB' basically because the quoted £232!! and on on ebay was £50 took the old MAF sensor to MB and they then charged £70, it worked fine no more surging and smooth gearchanges but still runs really rough on a neutral throttle so.... Star also pointed the finger at the EGR valve which I had cleaned earlier but the man at the garage said it was probably not shutting off completely which will make it run rough at low throttle openings.
    New EGR ordered from MB £200 and will fit next week, I will let you know if it works.
     
  4. Tinkerer

    Tinkerer Active Member

    Messages:
    391
    Joined:
    May 5, 2011
    Location:
    Norfolk
    Car:
    W210 E220 CDi
    Quick update, seeing as its a nice day thought I would have a little tinker, anyway, took the vacuum hose off of the top of the EGR control unit and plugged it with a 5mm drill bit to stop any crud getting in .......... result ........ no more rough running!! I might just leave it like that after I fit the new valve unit.
     
  5. Tinkerer

    Tinkerer Active Member

    Messages:
    391
    Joined:
    May 5, 2011
    Location:
    Norfolk
    Car:
    W210 E220 CDi
    Forget most of that, running smooth, not surging but still dropping in and out of limp mode!
     
  6. Tinkerer

    Tinkerer Active Member

    Messages:
    391
    Joined:
    May 5, 2011
    Location:
    Norfolk
    Car:
    W210 E220 CDi
    OK so yesterday I finally got the correct EGR valve (now called a gas mixing chamber!) out of merc ,£141, fitted it today which took about an hour because I did not have torx spanners to do those pesky bolts that fix the bracket to the EGR.
    The old EGR had a lot of soot in seeing as it was only cleaned about 2.5 months ago but I guess was witness to the fact that it was not working properly.
    Took it for a 15 mile run afterwards and fingers crossed, nice smooth running and no limp mode.
    Would not have thought that the EGR could trigger limp mode but the indy told me that the MAF had logged plausibility errors which may have made it think that the MAF was still faulty after I had replaced it because the EGR was letting gas by when it should have been closed.
     
  7. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    The EGR valve will trigger limp home as it's operation is monitored by the MAF sensor.
     

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