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knocking rattling noise after lowering car

Discussion in 'A3/S3/Sportback (8P Chassis)' started by hollow, Jul 7, 2009.

  1. hollow

    hollow Well-Known Member

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    since i lowered my car a few weeks ago i have noticed a dull knocking noise when going over deep manhole covers ,i would say similar to a spring coming away from the mount for a split second

    on not so severe pot holes i seem to get a rattle

    definately to me its from the rear of the car , but sometimes on a nasty pot hole it also sounds like the front passenger side

    the car was only lowered by 30 mm

    ball joints have been checked all bolts that were removed when swapping the springs over have been checked

    nothing visably loose , even had car on 2 poster ramp at brothers garage
    and cant find the answer

    never feel the knock on the drivers front though .

    only suggestion he has is top mounts for rear shocks could be elongated in the hole

    definately not windows rattling

    any one else had this problem ?


    dont mind spending on the car but dont fancy the wild goose chase first
     
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  3. Boydie

    Boydie Boycie
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    Droplinks

    Top mounts

    Dodgey/leaking shocks

    Anti Roll bar bushes

    Could be one of the above - how old is the car?
     
  4. r10jdl

    r10jdl Member

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    Same happened when lowering mine and it was the front top mounts. I think with the original springs they would be under more compression, so with the shorter lowering springs they had more room to move around. Mine were completely shot on removal.
     
  5. hollow

    hollow Well-Known Member

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    hi car is an 05 plate audi

    have checked ball joints etc no visable signs of wear , levered them with a bar etc
     
  6. N8

    N8 Kowalski Details
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    Sorry to hear that pal
     
  7. khalil

    khalil Member

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    what model is it? se, sport etc??
     
  8. hollow

    hollow Well-Known Member

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    audi a3 sportback 2.0 tdi sport

    2005


    ordered new front and rear top mounts and rear arb links should be here in morning will swap them over the weekend ,hoping that it cures them
     
  9. ianysm

    ianysm Active Member

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    If not...Check rear pads aren't rattling in the caliper!
     

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