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A140 cold start idling problem - idling at 650, should be 900

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by shahid2000, Nov 30, 2012.

  1. shahid2000

    shahid2000 New Member

    Messages:
    8
    Likes Received:
    0
    Joined:
    Nov 27, 2012
    Location:
    Surrey
    Your Mercedes:
    A140/1999/1.4L
    A140, 1999, 1.4, manual.
    The initial Mass air flow issue resolved but car not fixed. MAF repaired by ECUTesting - retested for idling and they said ECU/MAF is fine.

    The car is idling at 650 - according to mechanic it should idle at 900 for manual. Gets a bit better when engine gets warm.

    adaptations were reset on STAR after ECU refitting
    ECU tested on STAR no problems found, no fault codes.
    Mass Air flow sensor is taking the correct amount of air.

    No car for 3 weeks and I am bleeding money - please help.
     
  2. Alex Crow

    Alex Crow Senior Member

    Messages:
    10,677
    Likes Received:
    34
    Joined:
    Jul 9, 2009
    Location:
    Super Suffolk
    Your Mercedes:
    W169, W124, w202, W203, KTM 250 EXC, VW T25 camper and a Polo in a pear tree
    Has the throttle body been cleaned?
    Has it been 'taught in'?
     
  3. OP
    shahid2000

    shahid2000 New Member

    Messages:
    8
    Likes Received:
    0
    Joined:
    Nov 27, 2012
    Location:
    Surrey
    Your Mercedes:
    A140/1999/1.4L
    Thanks Alex cleaning throttle body did make some difference but it is still not idling properly. Now it wont cut out when idle but it sort of hesitates as if it is going to cut out.
    What do you mean by "taught-in"?
    Do you think i should try some fuel treatment??? is there anything else i can try??
     

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