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rough running v8

hondansxr Dec 11, 2012

  1. hondansxr

    hondansxr New Member

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    hi guys just picked up s4 2003 off flee bay there is no eng mag light coming on ,on ign or any time but airbag light is on .. have done a diagnostic check as it is running like its on 5 cylders (rough vibrating) 1st fault was camshaft sensor then no.3 cylinder cleared ran smooth for 10 sec then rough again .. did full diagnostic and central air flap motor fault and conrol module incorrect chassis ??????
    help
     
  2. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    can you post log of the scan?
     
  3. hondansxr

    hondansxr New Member

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    "A" camshaft pos timing over advanced performance (bank 1 ) p0011
    just thought of something car ran fine reved /sounded ok then i did less than 100 yrds to petrol station and i put 60 quids worth of super unleaded (noticed the norm unleaded out of action ) could it have doggy fuel in it ????
     
  4. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    how long you had the car?
     
  5. hondansxr

    hondansxr New Member

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    2 pm today drove from london to midlands
     
  6. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    try some vpower or octane booster
     
  7. hondansxr

    hondansxr New Member

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    it was v power ? got some octane booster in garage will try that .
     
  8. hondansxr

    hondansxr New Member

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    will camshaft sensor make it run sound awful ?
     
  9. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    not sure on a petrol,i had camshaft position sensor play up on my van, took 50+ cranks to start it with foot on accelerator, but once started it ran ok.
     
  10. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    has the EML light come on?
     
  11. AlexGSi2000

    AlexGSi2000 Well-Known Member VCDS Map User

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    A few coilpacks faulty maybe?
     
  12. hondansxr

    hondansxr New Member

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    just undone the fuel pipe and spilt some om a kitchen tissue after a few minutes the tissue is still stained and when you rub it it feels slippy . should nt fuel just evap ?????
     
  13. gen.heinz guderian

    gen.heinz guderian Well-Known Member

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    did it drive ok before you refuelled?
     
  14. adamss24

    adamss24 Well-Known Member

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    It looks like you put v power diesel, however you should not been able to fit the nozzle in the filler but it can be done...
     
  15. hondansxr

    hondansxr New Member

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    would it not show on a diagnostic if coil packs were failing
     
  16. hondansxr

    hondansxr New Member

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    what would a tiny bit of diesel do to the engine ...misfire?
     
  17. Greeny233

    Greeny233 It's all about the V8. Team V8 Team Silver Audi S4 Audi Avant Owner Group

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    If you'd put diesel in it, it would have white smoke billowing out the back. Coil packs are quite common for going, I may be wrong but I thing there was an Audi recall for S4 coil packs.
     
  18. fallmonk

    fallmonk Turbo Sport

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    Greeny is right there is a coil pack recall on that year don't assume because of the age it's been done , my 52 plate hadn't done ! Might be your problem and better yet its a freebie from Audi
     
  19. AlexGSi2000

    AlexGSi2000 Well-Known Member VCDS Map User

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    When I was a coilpack down on my 1.8T it didnt show on VAG-COM.
     
  20. jutlis 3.0

    jutlis 3.0 Member

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    vvt unit faulty
     
  21. jutlis 3.0

    jutlis 3.0 Member

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    mine was very similar and i ended up changing chains/guides/tensioners and cam adjusters
     
  22. docurley

    docurley Moderator Staff Member Moderator

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    Buy a coil pack (always good to have a spare) and swap them out one by one and see if she runs better or try taking one off at a time and see if the engine note changes if it dose not then you have a bum coil pack.
     

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