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S3 seems to run bad once warm ! And won't start ??

motfree Nov 9, 2010

  1. motfree

    motfree Member

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    Had a few problems with my s3
    Anyways replaced mass airflow and cam shaft sensor but now it seems to be cutting out once warm then will not start again .. Last time came up with the above faults but these have been replaced .. But before I put the new turbo on the car wouldn't hesitate to start ( didn't have boost mind ) .. My mates don't have a clue neither do I and I'm loosing patience haha any help would be great :)
    Cheers
    Ps live in north west ;-)
     
  2. 1animal1

    1animal1 The Clar!! it mouves!!! VCDS Map User

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    knock sensor just below the oil filter...vag first but thats what my monies on
     
  3. bengal

    bengal Member

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    Possibly the fuel pump i take it there are no fault codes ? Or as above lol.
     
  4. 1animal1

    1animal1 The Clar!! it mouves!!! VCDS Map User

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    fuel pump would cause more of an issue when cold that warm....
     
  5. motfree

    motfree Member

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    Knock sensor was on the diagnostics no1 and no2 I think !! What do these do ?
     
  6. 1animal1

    1animal1 The Clar!! it mouves!!! VCDS Map User

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    its a snensor that fits in the block, only way is to replace....otherwise the situation will get worse

    make sure you get a car specifc one too as i got sent a golf one and it didnt work!! £40 wasted
     
  7. motfree

    motfree Member

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    Is there 2 sensors ? Might just take it the garage and let them sort it out .. If it makes it haha ..
     
  8. 1animal1

    1animal1 The Clar!! it mouves!!! VCDS Map User

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    nope just one..... and its a royal pain in the ass without a ramp....you have to remove the undertray and the mount at the front of the inlet manifold, undo the securing nut from the top then remove the sensor out the bottom, **** of a job
     
  9. Welly

    Welly VX220 SC Driver :)

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    Don't you mean crank speed sensor dude? That's what I would put my money on....

    There are indeed 2 knock sensors.
     

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