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Stuttering on idle and under power

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3_will, Apr 16, 2013.

  1. s3_will
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    s3_will Member

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    [Apr 16, 2013]
    Morning all,

    Just had a terrible drive into work in my S3. The past couple of weeks the idle when cold has been very poor and I've had to apply a little throttle to keep it from cutting out. This morning the car started fine but under power it would stutter. I had a similar issue to this once before and it boiled down to the MAF.

    Does anyone have any suggestions?

    Thanks

    Will
    #1
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  3. Paradox1
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    Paradox1 Active Member

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    [Apr 16, 2013]
    you will need to get it scanned really but I had the same with a maf. get it scanned first then you'll know which route to take :thumbsup:
    #2
  4. s3_will
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    s3_will Member

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    [Apr 16, 2013]
    A friend has a reader so I'll plug that in and see what it brings up.
    #3
  5. 16Klappe
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    16Klappe RacecaR forward is RacecaR backwards. Supporter

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    [Apr 16, 2013]
    If it drives "ok" with light throttle I would suggest map sensor or more likely failing coil packs.
    #4
  6. s3_will
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    s3_will Member

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    [Apr 16, 2013]
    There is still some stuttering when driving on a constant throttle. Is there a way to see if the coil packs are going or just a case of replacing them and hoping that sorts it?
    #5
  7. Paradox1
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    Paradox1 Active Member

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    [Apr 16, 2013]
    pull the out one by one


    also try disconnecting the maf
    #6
  8. s3_will
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    s3_will Member

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    [Apr 16, 2013]
    I just about got home, the car went into limp home mode! Turned out coil 2 had failed. £20 later and I'm back up and running and back on full power.

    Cheers for the help guys.
    #7
  9. Paradox1
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    Paradox1 Active Member

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    [Apr 17, 2013]
    Good stuff :)
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