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

Gearbox Failure? Quattro Tfsi

Discussion in 'A3/S3/Sportback (8P Chassis)' started by TomSx, Aug 27, 2014.

  1. TomSx
    Offline

    TomSx New Member

    Joined:
    Jul 31, 2013
    Messages:
    21
    Likes Received:
    3
    [Aug 27, 2014]
    My car has started making a faint knocking. It sounds mettalic between 1k-3k revs but then goes. Doesn't do it on idle or in 5th or 6th strangely.

    I've just had it checked out and they've said suspected layshaft and not dmf. Now, is this common? Its just turned 100k.

    Also, how can I find my gearbox code? Its a 2006 car.
    #1
  2. Ads

    Ads

    [Sep 20, 2014]

  3. S3Alex
    Online

    S3Alex Rarely neutral

    Joined:
    Dec 3, 2008
    Messages:
    5,802
    Likes Received:
    1,274
    [Aug 27, 2014]
    The synchros,selector forks and bearings are all wear items,especially on remapped cars,and the transfer case is also known to fail.

    Mine whined like a dog in 2nd and 5th,prior to it's rebuild.
    #2
    TomSx likes this.
  4. TomSx
    Offline

    TomSx New Member

    Joined:
    Jul 31, 2013
    Messages:
    21
    Likes Received:
    3
    [Aug 27, 2014]
    Yep taken mine to a specialist who has confirmed the worst. Get it back Friday hopefully. Mines mapped and has been for a few years
    #3
  5. S3Alex
    Online

    S3Alex Rarely neutral

    Joined:
    Dec 3, 2008
    Messages:
    5,802
    Likes Received:
    1,274
    [Aug 27, 2014]
    What did he say?
    #4
  6. TomSx
    Offline

    TomSx New Member

    Joined:
    Jul 31, 2013
    Messages:
    21
    Likes Received:
    3
    [Aug 27, 2014]
    They suspect its the layshaft bearing and has the exact symptoms. They also said they've done a fair few of them and quite a common problem.
    #5
  7. S3Alex
    Online

    S3Alex Rarely neutral

    Joined:
    Dec 3, 2008
    Messages:
    5,802
    Likes Received:
    1,274
    [Aug 27, 2014]
    At least you have an answer.

    The rebuild on mine(new selectors,synchros and bearings) was under £800 which I thought was reasonable,considering how it's behaved since.
    #6
  8. TomSx
    Offline

    TomSx New Member

    Joined:
    Jul 31, 2013
    Messages:
    21
    Likes Received:
    3
    [Aug 27, 2014]
    Yeah it sounds like mine will be similar. I could get a second hand box but would rather do it once and right.
    #7
  9. TomSx
    Offline

    TomSx New Member

    Joined:
    Jul 31, 2013
    Messages:
    21
    Likes Received:
    3
    [Sep 8, 2014]
    Well it was the layshaft and some gear damage. Complete rebuild was required and I am now a fair bit lighter in the wallet..lol

    Luckily the clutch and DMF were both in good condition and looked to have been changed at some point.
    #8
  10. S3Alex
    Online

    S3Alex Rarely neutral

    Joined:
    Dec 3, 2008
    Messages:
    5,802
    Likes Received:
    1,274
    [Sep 8, 2014]
    Mine was rebuilt with uprated bearings and seems to have done the job as it's running a lot more torque over around 20000 miles and isn't whining.
    #9

Share This Page