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

Very rough idle and emission light on 2.0 FSI

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by cunni319, Dec 31, 2012.

  1. cunni319
    Offline

    cunni319 New Member

    Joined:
    Dec 31, 2012
    Messages:
    4
    Likes Received:
    0
    Hi the other day my 03' 2.0 FSI A4 starting quite violently shaking when i was parked idling, it only does it under 1000 rpm soon as i press the accelerator the vibration stops, just quite worrying when i stop at lights etc,etc. Also the day after waht i thought was the engine management light came on, however after consulting the handbook realised its the exhaust/emissions light. Havent had time to take it to the garage yet and done about 600 miles since i noticed it with no ill effects....

    Anyone got any ideas as to what could be causing either of the problems? Id like to think theyre linked?

    Thanks in advance for any suggestions.
    #1
  2. bez101
    Offline

    bez101 Yorkshire & Humber Rep. Regional Rep

    Joined:
    Jul 8, 2008
    Messages:
    8,747
    Likes Received:
    495
    id go for coilpack's
    but it realy needs pluging in to get the fault codes.
    #2
  3. chrisa4quat
    Offline

    chrisa4quat Member

    Joined:
    Sep 21, 2004
    Messages:
    897
    Likes Received:
    10
    Is it a misfire?
    #3
  4. cunni319
    Offline

    cunni319 New Member

    Joined:
    Dec 31, 2012
    Messages:
    4
    Likes Received:
    0
    Not sure, its only when the engine is warm and sitting at 800 revs,just feels like the engines rocking almost? As soon as i touch the accelerator or whilst driving its completely fine?
    #4
  5. bez101
    Offline

    bez101 Yorkshire & Humber Rep. Regional Rep

    Joined:
    Jul 8, 2008
    Messages:
    8,747
    Likes Received:
    495
    as above you need a scan for codes
    but i do think its a mis from the coilpacks.
    #5
  6. chrisa4quat
    Offline

    chrisa4quat Member

    Joined:
    Sep 21, 2004
    Messages:
    897
    Likes Received:
    10
    Could be an air leak. Misfire should be present all the time
    #6
  7. B6Steve
    Offline

    B6Steve Member

    Joined:
    Feb 1, 2012
    Messages:
    42
    Likes Received:
    0
    Lift the cover off the top of the engine and check the oil breather hoses, very comon to have a split there where it plugs into the rocker cover where the pipe dissappears into the inlet manifold.
    #7

Share This Page