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urgent help, judder/missfire?

Discussion in 'A3/S3 Forum (8L Chassis)' started by brys3, Jul 20, 2010.

  1. brys3

    brys3 Member

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    hi, upon driving home i over took a focus rs then as i continued to plant my foot over 3000rpm it started to judder or missfire. i tried this in ever gear and is fine upto 3000 then starts to judder. i tried slow acceleration and was fine. any ideas? please help
     
  2. finny_quattro

    finny_quattro Member

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    crank sensor mate....might be wrong but i changed maf lambda then crank and it was that
     
  3. Sandip

    Sandip Well-Known Member

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    I'd sway towards coilpack and plugs
     
  4. brys3

    brys3 Member

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    i was thinking coil pack, ive had a similar judder previous which ended up being the gap on the plugs but it was no where near as harsh and was at various rpms depending on boost.
     
  5. brys3

    brys3 Member

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    oh and ive just the codes. ive got 17863 and 17864
     
  6. Sandip

    Sandip Well-Known Member

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    Those codes are pointing at Lambda, they might of popped up because your cars been firing on 3 cylinders
     
  7. sportstractor

    sportstractor Chugger

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    ha mine started doing the same yesterday. definately down to plugs or coil pack as its load dependant.
     

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