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S3 choking/hesitating

Discussion in 'A3/S3 Forum (8L Chassis)' started by S4 Muzza, Jan 6, 2013.

  1. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 6, 2013]
    My S3 has developed a stuttering when accelerating and its recently got worse. It only seems to affect 3rd-6th gear, not first or second. It almost feels like the car is choking or something. Each 'choke' only lasts a split second but it will often 'choke' about half a dozen times in a row, depending on how hard i'm accelerating. Seems to happen between 3 & 40000rpm, but if i accelerate slowly i can get up to speed without it happening at all. The car idles normally but i feel its running a bit rough in general.

    I cant have the car scanned until next week, so dont have any codes as of yet. Anyone have any ideas? My initial thoughts were MAF or coilpacks??

    Thanks
    #1
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  3. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 6, 2013]
    just had it out for a spirited run with the maf disconnected and its running much smoother, but still not perfect and the choking persists. ideas?
    #2
  4. Vex182
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    Vex182 Guess what I drive...

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    [Jan 6, 2013]
    Replace the MAF with a friend if possible. Could be MAF or a slight misfire, have you checked the plugs?
    #3
  5. gen.heinz guderian
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    gen.heinz guderian Well-Known Member Regional Rep VCDS Map User

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    [Jan 6, 2013]
    Sounds like coilpacks to me.
    #4
  6. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 6, 2013]
    cheers for the reply, will check the plugs tomorrow and probably get a new set ordered just to eliminate that as the cause of the problem. fingers crossed that'll sort it, i can handle £30 lol
    #5
  7. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Jan 6, 2013]
    I'd guess at coil packs or the coil pack wiring. A lot more people are reporting the coil pack wiring at the moment as these cars are hitting an age where the wiring is becoming an issue.
    #6
  8. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 6, 2013]
    can anyone confirm that PFR6Q is the correct part no. for the NGK plugs? Not sure if i need something differnet with the APY having bolt downs??? thanks again
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  9. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 7, 2013]
    #8
  10. MURRAYS444
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    MURRAYS444 Member

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    [Jan 7, 2013]
    I have those ones they should be fine, hopefully this should cure your car :meeting:
    #9
  11. S4 Muzza
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    S4 Muzza oww! my giant blue head!

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    [Jan 16, 2013]
    Quick follow up.

    After trying to remove the plugs a few days ago with no joy, i tried again tonight with a cool engine and some more leverage. Had them out no problem. And the icing on the cake is that (for now anyway) its cured my hesitation at 3000rpm :) and the car in general is runing much sweeter. Cheers everyone for the input.

    For reference the NGK spark plugs used were PFR6Q 6458
    #10
  12. MURRAYS444
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    MURRAYS444 Member

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    [Jan 16, 2013]
    That's good to here a cheap fix was the problem with your car the plugs on my girlfriends car were a nightmare to remove thought they were welded on :(
    #11

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