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Revs dropping and cutting out

Discussion in 'A3/S3 Forum (8L Chassis)' started by Andrew@A.L.D, Nov 27, 2010.

  1. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Just started doing this, maybe its the cold but its getting annoying.

    I'll be driving down the road and come to a junction, dip the clutch and the revs drop to 400 then come back to 950rpm, some times it will cut out?
     
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  3. HTC

    HTC Active Member

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    Last time this happened to me it was a vacuum leak. Take a look at the various vacuum pipes post turbo. Also a clean up of the throttle body can cure this.
     
  4. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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    Thought i had a vac leak and my MPG has been bad
     
  5. Alex C

    Alex C Well-Known Member
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    can a vac leak ruin your mpg?
     
  6. finesse

    finesse Active Member
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    hmm sounds like my crank sensor issue, vagcom scan will confirm
     
  7. Lemon S3

    Lemon S3 Alex

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    It's probably the vac pipe under the inlet manifold.
     
  8. Broken Byzan

    Broken Byzan Photographic Moderator
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    I had this recently, went through all of the above, turned out to be the MAF.
     
  9. Andrew@A.L.D

    Andrew@A.L.D May add NOS to 600+bhp?

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  10. Sandip

    Sandip Well-Known Member

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    Clutch switch? Not had an issue with this switch personally but i've heard the odd story about them lol

    I would of thought it was the MAF to be honest, possibly try unplugging it and see if it still does it
     

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