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"Knock" when revving, faulty DMF?

Discussion in 'A3/S3 Forum (8L Chassis)' started by ManuGD, Dec 11, 2013.

  1. ManuGD

    ManuGD New Member

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    Hi all,

    One day a rotational knock appeared in my S3.
    It was very soft and I could only hear it when I start to roll in 1st gear (when clutch pedal is being released).

    I thought it was a clutch issue, but after a couple of months getting louder, now it knocks in every gear, clutch pedal pressed, not pressed, revving with no gear, accelerating... So I think my DMF is saying goodbye :(

    Here you have a video to hear what I'm talking about. It is the "knock-knock-knock" sound when I first rev up with no gear, and after that when I start rolling.

    LINK TO THE VIDEO [Dropbox]

    If I am right and I need to replace the DMF, what would you suggest?

    1- A new DMF?
    2- Or should I go with a single mass flywheel?

    Option 2 is way cheaper, but I don't know if there would be any cons. Would the gearbox and transmission system work fine?

    I don't want to save some money but then spend two times that amount to replace other broken/faulty parts...

    Anyone here running a single mass flywheel? I read lots of things in different forums but it seems that what works fine for some, doesn't for some others :sadlike:


    Thank you!
     
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  3. Alais DJA

    Alais DJA Member

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    Does you get a knocking after you turn off the engine?
     
  4. s3dave

    s3dave TFSI Hybrid
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    Ahh you think there is somebody in the boot?...
     
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  5. ManuGD

    ManuGD New Member

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    No.

    Well, sometimes yes, but it has nothing to do with this knocking.

    This one knocks faster as you rev up.

    Someone can bring me any light?

    Thanks!
     
  6. Vex182

    Vex182 Guess what I drive...

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    Bent rod?
     
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  7. 16Klappe

    16Klappe I <3 Panda's!
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    Best reply ever Vex.

    :)
     
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  8. myth

    myth Member

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    As far as I know DMF are installed only in Diesels.
     
  9. s3dave

    s3dave TFSI Hybrid
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    Thats a myth.... ; )
     
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  10. ManuGD

    ManuGD New Member

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    In a stock car with only 116.000kms?
    Sounds strange, but I never thought about that possibility... And it scares me!
     
  11. 16Klappe

    16Klappe I <3 Panda's!
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    Lol.
     

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