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

Help Needed Loss of Power!

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Nev1984, May 19, 2012.

  1. Nev1984
    Offline

    Nev1984 New Member

    Joined:
    May 19, 2012
    Messages:
    12
    Likes Received:
    0
    [May 19, 2012]
    Hello all.

    Hoping someone can help me! i have an 2004 audi a3 2.0tdi BKD engine and have just got it back after having a new front end on at a local bodyshop due to a slight accident!
    I picked the car up on thursday and it has no power a total lack of boost yet you can hear the turbo spool. the car has been in the bodyshop for 3-4 weeks when i dropped it there the car had no engine issues what so ever and ran like a dream!
    i got the car home and scanned it using VAGCOM i got error code p0102 Air flow sensr Signal input to low. i changed the air flow meter the follwing day for an aftermarket one which was no better. I was told it would be the cheap air flow meter at fault so i returned it and went to the dealer. Having fitted a genuine one the car remains the same and VAGCOM still says fault code p0102!!
    Usuing a multimeter into the back of the plug going in to the meter i can get a 5v live yet only 1.5v coming back to the ecu which im told it should be higher and rise to 4.8v when revs are on which it doesnt. I have checked all vac pipes and all are fine. Intercooler pipes all pressurise ok also! i am now lost with it pleeeeeeeeeeease can someone help?

    Many Thanks in Advance

    Adam
    #1
  2. Nev1984
    Offline

    Nev1984 New Member

    Joined:
    May 19, 2012
    Messages:
    12
    Likes Received:
    0
    [May 20, 2012]
    anybody help? :banghead:
    #2
  3. SAiLO
    Offline

    SAiLO Enthusiast VCDS Map User

    Joined:
    May 7, 2009
    Messages:
    951
    Likes Received:
    35
    [May 20, 2012]
    You should speak to the garage that you left your car with.
    #3
  4. Nev1984
    Offline

    Nev1984 New Member

    Joined:
    May 19, 2012
    Messages:
    12
    Likes Received:
    0
    [May 20, 2012]
    have done and will be doing again tommorow, was just hoping i could fix it without him having it back for weeks on end :\
    #4
  5. Nev1984
    Offline

    Nev1984 New Member

    Joined:
    May 19, 2012
    Messages:
    12
    Likes Received:
    0
    [May 20, 2012]
    Done a little more reading at this Mass airflow sensor for 2.0 TDI and i dont have a 12v supply coming down pin 2, anyone know if this connects to a relay or is straight from the ECU? :shrug:
    #5
  6. phil76
    Offline

    phil76 Active Member

    Joined:
    Feb 16, 2008
    Messages:
    572
    Likes Received:
    40
    [May 21, 2012]
    If its had a front end on it i would be getting them to check things like intercooler hoses or a thrust sensor if they have one on the intercoolers ?
    #6
  7. APAutomotive
    Offline

    APAutomotive Shark Performance Shropshire

    Joined:
    Mar 7, 2012
    Messages:
    81
    Likes Received:
    3
    [May 21, 2012]
    How bad was front end damage?

    Is it possible that you have a chaffed wire thus not getting correct voltage?
    #7

Share This Page