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

A4 Judder.

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by otis_b, Feb 7, 2008.

  1. otis_b
    Offline

    otis_b Member

    Joined:
    Aug 16, 2007
    Messages:
    30
    Likes Received:
    0
    Hello People,

    I have a B6 Audi A4. When idle, the engine judders and the whole car shakes from side to side. As soon as you apply a bit of throttle this stops.

    Any ideas as to what this could be? Ran VAG Com on it, there are no apparent faults.

    Thanks in advance.

    Otis
    #1
  2. Blackadder
    Offline

    Blackadder Member

    Joined:
    Sep 3, 2007
    Messages:
    67
    Likes Received:
    0
    I have the same issue when idling. It's not very bad but it is noticeable.

    The local garage thought it maybe clutch/flywheel fault or misalignment. Clutch hsd high biting point so maybe knackered. Having it looked at next week.
    #2
  3. bonerp
    Offline

    bonerp Member

    Joined:
    Sep 24, 2007
    Messages:
    180
    Likes Received:
    2
    engine mount gone??
    #3
  4. Neil_S
    Offline

    Neil_S Member

    Joined:
    Jan 18, 2006
    Messages:
    248
    Likes Received:
    0
    TDi engine?

    Mine does it too, very common with PD engines.
    #4
  5. Blackadder
    Offline

    Blackadder Member

    Joined:
    Sep 3, 2007
    Messages:
    67
    Likes Received:
    0
    mine is a TDI.

    The garage did't seem to think it was normal. It's only a slight juddering not as bad as the first post suggests. If it's a known problem what's the resolution?
    #5
  6. Neil_S
    Offline

    Neil_S Member

    Joined:
    Jan 18, 2006
    Messages:
    248
    Likes Received:
    0
    As far as I know, even Audi don't know what the solution is, look on any Audi forum and you are bound to find TDi owners posting similar reports, it annoys me, I'd love to find a solution, but I haven't found anything yet.
    #6
  7. Macduff
    Offline

    Macduff Member

    Joined:
    Aug 3, 2004
    Messages:
    742
    Likes Received:
    0
    This sounds like a classic engine mount failure

    One or more of them mounts is ECU controlled to soften when running at idle and then stiffen above 1100rpm (IIRC). It's achieved with a solenoid that controls a valve in the mount. This either allows damping oil through a value or doesn't.

    It should show up in VAGCOM. Do a search on here and you'll find plenty of threads about it.
    #7
  8. Blackadder
    Offline

    Blackadder Member

    Joined:
    Sep 3, 2007
    Messages:
    67
    Likes Received:
    0
    When I had mine tested for faults via VAG-COM nothing showed up.

    Whats the cost for new engine mounts with labour approx?
    #8
  9. Macduff
    Offline

    Macduff Member

    Joined:
    Aug 3, 2004
    Messages:
    742
    Likes Received:
    0
    I believe the mount is about £60 and it's supposedly easy enough to do yourself although I imagine you need some way of supporting the engine.
    #9
  10. technics100
    Offline

    technics100 Member

    Joined:
    Feb 9, 2004
    Messages:
    778
    Likes Received:
    12
    I think the mount is around £80 from the dealers, I did mine myself.. only tools required were sockets and a trolley jack (to lift the engine up) it quite easy to do..

    Mine past 2 A4's only shock when I had a tuning box installed.. apart from taht they were fine...
    #10

Share This Page