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juddering on tickover......!

WOLF Oct 1, 2013

  1. WOLF

    WOLF I am WOLF.......

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    My A4 TDI Avant has developed a judder on tickover,noticed it while sat at traffic lights,out of gear just idling then start a judder.

    Any ideas?
     
  2. munchkincoupe

    munchkincoupe Member

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    Flywheel?
     
  3. pauldazzle

    pauldazzle Well-Known Member

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    DMF or engine mounts would be the most likely suspects. If it stops when you dip the clutch it's the DMF at fault.
     
  4. WOLF

    WOLF I am WOLF.......

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    no,it judders whether clutch pedal up or down but not all the time:think:no big deal just annoying when it shakes...
     
  5. pauldazzle

    pauldazzle Well-Known Member

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    Sounds like it's probably an engine mount failing then. A scan with VCDS should show it up.
     
  6. hades-

    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    D T's ?
     
  7. WOLF

    WOLF I am WOLF.......

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    that sounds better than DMF:yes:

    D T'S Bez???
     
  8. Steve B5 Biker

    Steve B5 Biker Member

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    Mine was doing same Steev it was dmf,
    fitted new clutch and converted it to solid flywheel last year and its much smoother now...
     
  9. pauldazzle

    pauldazzle Well-Known Member

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    My engine used to randomly judder at idle & fitting a new engine mounting stopped it. i've had DMF failure on a couple of VAG cars & both times the juddering at idle would stop on engaging the clutch.
    Another way of checking the DMF is to hold the revs at 40ish mph in 3rd gear, & if the car surges your DMF is probably goosed.
     
  10. Stu-pid

    Stu-pid Member

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    Mine had a shake on tickover. Had the timing belt and water pump done today. The mechanic said the water pump pulley was moving all over the shake has now gone and is running smoother. Just another idea for you
     
  11. demus

    demus Fire in the hole..

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    Mines done this for the last 40K or so since I've had it, does it mainly when the engine is up to temp, clutch up or down makes no difference, no rattling or flywheel noise, and there are no engine mounting faults logged.
    Load the engine with A/C, demisters & lights etc and it stops shaking, or pick the revs up a little. Don't know what the culprit is..
     
  12. demus

    demus Fire in the hole..

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    Paul, which engine mount cured it?
     
  13. Andy27168

    Andy27168 Member

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    I have what I describe as a shuddering on tick over, though mine can be accompanied by white smoke, if you raise the idle even very slightly, or a change in load on the electrical system it disappears, though it hasn't be fixed yet it has been diagnosed with several faulty diesel injectors, and was a well documented fault, it might be worth checking out.
     

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