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Knock when accelerating/braking

Ruairi_a4 Sep 10, 2018

  1. Ruairi_a4

    Ruairi_a4 Member

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    Hi all I've a 1.9tdi awx..was just wondering has anyone came across this..when accelerating I can hear a couple of loud knocks and the same when braking..anyone any ideas?
     
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  3. joinerman

    joinerman Well-Known Member

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    Yes, turned out to be a broken weld inside the front sub frame, it was a fairly common fault which Audi up rated on the B7, i got a second hand one off eblagg , same part number as my B6 but said B7 on the replacement, fitted perfect & no more knocking.
     
    Ruairi_a4 likes this.
  4. Ruairi_a4

    Ruairi_a4 Member

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    Was hoping it was just a suspension arm..it's coming from the drivers side. Where was yours??
     
  5. joinerman

    joinerman Well-Known Member

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    There's a strengthening bar that runs through the top section inside, can be seen through various holes, welding lets go lets the bar move & knocks, i got my sub frame for £40
    Should of been a pic for you to see but can't get it to show
    Google Audi a4 b6 subframe & go to images
     

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