1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

lack of power and speed.

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by saffasquad, Dec 2, 2014.

Tags:
  1. saffasquad

    saffasquad New Registration

    Messages:
    1
    Likes Received:
    0
    Joined:
    Dec 2, 2014
    Location:
    germany
    Your Mercedes:
    ML 270 / 2002
    Hi there I have a ML 270 from 2002 and the absolute top speed is 135 KM/H. It also has a great lack of power going through the gears, it does not rev over 3000.
     
  2. V6Matty

    V6Matty Senior Member

    Messages:
    6,781
    Likes Received:
    1,539
    Joined:
    Aug 1, 2012
    Location:
    Newark, Notts
    Your Mercedes:
    S212/10/E350(His) W169/2005/A180 (Hers)
    do you have any other faults, have you had any codes read, if so were they stored or current, will it rev past 3000 in park?
     
  3. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    310
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Possible MAF fault.
     
  4. Chrishazle

    Chrishazle Senior Member

    Messages:
    3,633
    Likes Received:
    1,227
    Joined:
    May 25, 2009
    Location:
    Nr Ashford, Kent
    Your Mercedes:
    S204 2008 C220CDI Elegance Estate Auto, 2008 R171 Facelift SLK280
    Had this with my 2001 C270 S203 about a month after I bought it - no kickdown, would not rev above 3k. New MAF transformed the car.
     
  5. cutaresku

    cutaresku Active Member

    Messages:
    38
    Likes Received:
    0
    Joined:
    Oct 26, 2012
    Location:
    RO
    Your Mercedes:
    W210, 2001, OM611
    Hmm, since you keep prescribing MAF fault, maybe you could replace it with "need for STAR" hint.
     
  6. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    310
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    This is a hard question as STAR will seldom pinpoint the MAF, in many cases the car will go better with it unplugged when it has failed.

    STAR will usually say 02 sensor, just because the MAF can cause the 02 sensor to shift from its stored range.

    It cost nothing to unplug it and try the car and it will not upset anything.
     
  7. termari

    termari New Member

    Messages:
    8
    Likes Received:
    0
    Joined:
    Jul 28, 2010
    Location:
    Finland
    Your Mercedes:
    MB ML 270 CDI Aut. 2000
    Hi,
    I had the same symptoms on my ML 270 CDI also.
    Useful rev range was from 2000 to 2600 and I had to change manually to keep revs on that range.
    After a couple of weeks of guessing (after Star diagnose) it turned out to be a hole on the turbo vacuum line which eventually cut the line completely right from the connection to turbo.
    We used very low tech approach, disconnect a vacuum line, blow and suck, if there is resistance then line is probably ok.
     

Share This Page