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

Idling wobble/judder 2.0tdi

Discussion in 'A3/S3/Sportback (8P Chassis)' started by Bramley, Mar 27, 2013.

  1. Bramley
    Offline

    Bramley Member

    Joined:
    May 8, 2012
    Messages:
    261
    Likes Received:
    9
    [Mar 27, 2013]
    Hi, my 2.0tdi has been juddering on idle for a while now. The revs don't fluctuate and I've just had a full recon (it did it before recon too) any ideas what this could be?? It's generally only when warm


    cheers
    #1
  2. Ads

    Ads

    [Dec 28, 2014]

  3. tdi-man
    Offline

    tdi-man Well-Known Member

    Joined:
    Jul 27, 2009
    Messages:
    1,611
    Likes Received:
    48
    [Mar 27, 2013]
    possibly

    timimg may b slightly out.

    lack of fuel on warm idle
    #2
  4. Bramley
    Offline

    Bramley Member

    Joined:
    May 8, 2012
    Messages:
    261
    Likes Received:
    9
    [Mar 27, 2013]
    Timing was my initial thought.

    How do you fix lack of fuel on warm idle?
    #3
  5. Ash187
    Online

    Ash187 Audi-Retrofits.co.uk Site Sponsor

    Joined:
    Mar 12, 2009
    Messages:
    6,843
    Likes Received:
    483
    [Mar 27, 2013]
    mine did this alot too... especially on a hill at traffic lights
    turned out it was the engine mounts. I upgraded to the THS top mounts and used a powerflex dogbone mount insert which has cured the issue
    #4
  6. Bramley
    Offline

    Bramley Member

    Joined:
    May 8, 2012
    Messages:
    261
    Likes Received:
    9
    [Mar 27, 2013]
    Cheers Ash ill have a look
    #5
  7. L333fow
    Offline

    L333fow Member

    Joined:
    Oct 7, 2012
    Messages:
    65
    Likes Received:
    1
    [Mar 27, 2013]
    I have this same problem! Havnt been able to determine if its when cold it hot yet!
    mine is surprisingly quiet for a diesel but every now and again it has this flutter
    #6
  8. Boy-Raymond
    Offline

    Boy-Raymond New Member

    Joined:
    Jan 28, 2013
    Messages:
    20
    Likes Received:
    0
    [Mar 27, 2013]
    It's a fairly common thing by the look of things. Check:

    mounts
    Timing slightly out
    DMF on way out
    injector loom

    Still to determine if mine is timing following belt change or DMF.
    #7
  9. tdi-man
    Offline

    tdi-man Well-Known Member

    Joined:
    Jul 27, 2009
    Messages:
    1,611
    Likes Received:
    48
    [Mar 27, 2013]
    ths top mounts ? do u have a link where to get them ?




    #8
  10. Boon
    Offline

    Boon Active Member VCDS Map User

    Joined:
    Sep 22, 2012
    Messages:
    441
    Likes Received:
    53
    [Mar 27, 2013]
    +1
    #9
  11. CHEZ
    Online

    CHEZ moderately amusing Supporter

    Joined:
    Jul 9, 2011
    Messages:
    3,804
    Likes Received:
    559
    [Mar 27, 2013]
    i would say DMF!
    from what i have read anyway!
    from past experience on my a4!
    #10
  12. Joeeey
    Offline

    Joeeey S3

    Joined:
    Mar 9, 2013
    Messages:
    15
    Likes Received:
    1
    [Mar 27, 2013]
    vacuum leak?
    #11
  13. Ash187
    Online

    Ash187 Audi-Retrofits.co.uk Site Sponsor

    Joined:
    Mar 12, 2009
    Messages:
    6,843
    Likes Received:
    483
    [Mar 28, 2013]
    #12
  14. Orts
    Offline

    Orts Member

    Joined:
    Mar 22, 2011
    Messages:
    109
    Likes Received:
    0
    [Mar 28, 2013]
    I had this problem for a good year and a half, when stopped at lights and when it warm it juddered like a motherf*cker, like a violent judder. I left it for a good while because it was only every now and again.

    About 2 months back I had a some work done on it, I had a coolant leak from my water pump so got that replaced and I had a leak from my intercooler pipes which I had sealed up.

    Since this work the violent judder has completely gone, and ive done a trip around Scotland in it which took about 800 miles along with the rest of my usual mileage so its been well ran in since and not had it come back once. Not sure if you have the same problems, but its another place to look if youve checked out the timings etc?
    #13
  15. max69vk
    Offline

    max69vk Active Member

    Joined:
    Apr 3, 2012
    Messages:
    771
    Likes Received:
    45
    [Mar 28, 2013]
    First thing first, get the car on VCDS & check the timing (KW), if required adjust the front cam to get timing right. If it is still lumpy adjust the rear cam to match the front.

    Note: the front cam (towards front of the car) controls the intake/injection phase, the rear cam deals with the exhaust - The rear cam also seems to affect idle smoothness more than the front cam bit there is no point adjusting it if the front isn't right.

    Small (& I do mean small) adjustments make big differences, so take your time with any adjustment.
    #14

Share This Page