Maf Sensor

Discussion in 'Engine' started by djw, Aug 18, 2011.

  1. djw

    djw New Member

    Messages:
    23
    Joined:
    Oct 28, 2010
    Location:
    Cornwall
    Car:
    S500l
    Hi,
    Replaced my MAF sensor today and cleaned the EGR Valve and vacuum pipes.
    The original problem was car was not accelerating hard, would drive ok but wouldn't exceed 3000rpm.
    Do you have to reset the computer after the new sensor is fitted because exact problem still exists.
     
  2. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    No reset required.
    How did you know the MAF was faulty?
     
  3. kth286

    kth286 MB Enthusiast

    Messages:
    2,923
    Joined:
    Feb 4, 2003
    Location:
    Caversham Berks
    Car:
    E320 Coupe
    what car is that ?

    It is in limp mode probably.

    did you get codes read ?
     
  4. jane_mk

    jane_mk New Member

    Messages:
    11
    Joined:
    Aug 11, 2011
    Location:
    Skopje, Macedonia
    Car:
    W124 200E
    I had similar problem when i was cheeking how my car will work with new throttle body (i suspect that mine is broken), I put throttle body for 220e on mine 200e , engine was working fine, but there was smell of petrol in exhaust gases. Suppose the new throttle body send false information and the mixture was to reach. When I put mine throttle body back I notice that car was not going more then 4000rpm (it was coughing). After ruining the car with 4000rpm for 10 min problem disrepair. I guess that rich mixture make problem either with sparking plugs (make them oily) or with O2 sensor. But if your original problem was that car was not going more than 3000rpm then check the throttle body, clean the air valve and clean the electric contacts (put contact spray). Also put some additive to clean the fuel system. Maybe you have problem with fuel intake. If all this dose not help than go to mechanic.
     
  5. kth286

    kth286 MB Enthusiast

    Messages:
    2,923
    Joined:
    Feb 4, 2003
    Location:
    Caversham Berks
    Car:
    E320 Coupe
    was the engine limiting the revs when you were driving the car?

    I ask because when at standstill the car will not rev above 3/4000 revs for sefety reasons to protect the engine.
     
  6. OP
    OP
    djw

    djw New Member

    Messages:
    23
    Joined:
    Oct 28, 2010
    Location:
    Cornwall
    Car:
    S500l
    sorry i should have said its a 2002 320 cdi e class, When you drive the car in the morning its ok drives perfect whenever you stop switch the car off and go back to drive it 10 - 20 mins later sometimes even after a few minutes the car drives but wont exceed 3000 rpm, no kickdown or hard acceleration. if you leave the car for about 6hrs it ok again until you switch it back off. Someone put a computer on it and said the maf and egr valve. I replaced the sensor and cleaned all the egr and vac pipes but it doing my head in now.
     
  7. Dieselman

    Dieselman Banned

    Messages:
    34,206
    Joined:
    Jul 13, 2003
    Car:
    Peugeot 403 Convertible
    Last edited: Aug 19, 2011
  8. englishdas

    englishdas Active Member

    Messages:
    335
    Joined:
    Sep 1, 2010
    Location:
    South Yorkshire
    Car:
    57 E200 Kompressor
    Could you just disconnect your MAF?
     
  9. mike1875

    mike1875 Member

    Messages:
    48
    Joined:
    Mar 7, 2011
    Location:
    Ludhiana,Punjab,India
    Car:
    mercedes e220 w124,Zen,Royal Enfield Bullet 350
    My e220 behaves the same.It doesnt go beyond 4000rpms and coughs on the run whn tryin to go beyond.One has to be quite rough on throttle,forcing the car to go beyond 4000,and then it does after a couple of tries.Pls help.coz I hv got a new fuel pump,filter,new fuel distributor valve and new injectors.The cars exhaust has the smell of fuel.Gives a rattling start in the morning.Pls help...how u repaired ur car.The mechanic here doesnt guide me honestly.
     
Tags:

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.