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Vibration Under Car - Propshaft Bearing?

BenKH95 Oct 8, 2019

  1. BenKH95

    BenKH95 New Member

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    I posted a few months ago regarding a clunking/knocking noise from under my car (TFSI Quattro), I had it diagnosed at a local specialist as the rear diff and had that changed. The noise then became a constant vibration under acceleration up to around 40-50mph, relative to the amount of torque applied. I had my old diff looked at and it turns out it was fine all along!

    I’ve had the car looked at by a transmission specialist, he can’t pinpoint the cause of the noise. I’m convinced it could be my propshaft centre bearing as there’s a decent amount of play in the bearing and some of the rubber looks perished/cracked. He says it isn’t this as the noise can’t be heard when driving the car in the air on a two-post ramp - surely there’d need to be some load/weight on the car to replicate the symptoms?

    My questions to you guys:
    - Has anyone experienced similar issues with vibration under load at low speeds/gears?
    - Was it the propshaft centre bearing?
    - If so, how is it replaced? It looks like the propshaft is all one piece, I’d rather not buy a second hand one in case it happens again

    Cheers guys
     
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  3. Paul battams

    Paul battams Active Member VCDS Map User

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    What reg is car??
    I’ve had same issue and it was centre bearing you can split the early shafts on B7’s manual box I did mine 2005 but need to be careful you don’t destroy shaft getting it apart took me and a friend several hrs to do but all was good after the repair good luck


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  4. BenKH95

    BenKH95 New Member

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    Quite a late B7, it’s a 2008/57 reg 6 speed manual, are you saying on later B7s you can’t split the shaft?

    Where did you purchase your replacement bearing?
     
  5. Paul battams

    Paul battams Active Member VCDS Map User

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    Not sure about late B7’s but defo B8’s you cant split the shaft bearing came off e bay you’ll need to check holes on carrier on your bearing and check shaft size if I remember there was 3 different bearing sizes and bearing was around the £50 mark


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  6. BenKH95

    BenKH95 New Member

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    Just had a look through the health check I had done a couple of months ago and noticed they picked up on leaking engine mounts. Didn't even think of this, has anybody ever dealt with worn engine mounts, what were the symptoms and how was replacement?
     
  7. Paul battams

    Paul battams Active Member VCDS Map User

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    Ye I’ve done engine mounts not cheap my passenger side one went and dropped engine down struggled to get gears though it was clutch.
    Not the easiest to do I supported engine took engine mount and bracket off to do it it’s well buried good luck


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  8. quattrogone

    quattrogone Quattro Back!

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    I've just bought a b6 quattro with only 80k on it but I have noticed a clunking sound too!
    It only happens at very low speed 15mph and under, always when going up a slope or a steep hill very slowly in 1st gear.
    Other than that the car seems to drive fine.
     

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