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Flat spot @5prm in 5th and 6th

Discussion in 'A3/S3 Forum (8L Chassis)' started by WRN, Aug 13, 2003.

  1. WRN
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    WRN New Member

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    [Aug 13, 2003]

    Anyone else every had this?
    #1
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  3. RizS3
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    RizS3 Member

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    [Aug 13, 2003]
    Im too sure but could it be a collapsing hose to the turbo?
    I think its happened before on tuned cars?
    Or maybe a faulty DV?
    Im sure other members will point you in the right direction. /ubbthreads/images/graemlins/beerchug.gif
    #2
  4. halegavin
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    halegavin Member

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    [Aug 13, 2003]
    could it be another coilpack issue?
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  5. edwin98
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    edwin98 Member

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    [Aug 13, 2003]
    My car goes quickly from 3000-4500 then i think there is a little flat spot. In higher gears you notice it a lot more then in lower ones. I think when you floor your car, the boost is higher for a little time?

    Is this true?
    #4
  6. edwin98
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    edwin98 Member

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    [Aug 13, 2003]
    Sory what is the coilpack? my english is not so good.
    And how can is see this is broken?
    #5
  7. AndyS3
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    AndyS3 Member

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    [Aug 13, 2003]
    The coilpack delivers the electical charge to your spark plug.

    Yes there is a slight flat spot on a standard S3 about 4000rpm before it picks up again.

    Diverter Valve (DV) - If this goes u will know about it, i was informed i prolly wouldnt get out of 3rd if it went.

    Coilpack - Again u will know if one of these go the car will only be running on 3 cylinders if one goes so it will be running real ruff and u will know there is something wrong.

    Air Intake Hose - Flat spot about 5000rpm could be your air intake hose collasping but it is usally a problem with chipped cars (is your car chipped).

    Wastegate - I currently have a problem with my car its got a flat spot about 2500rpm and then it picks up about 3500rpm but not properly, it has been diagnosed as the wastegate is sticking.

    Mass Air Sensor - Not to sure of the symptoms.

    But i would say the Air intake hose if it is chipped.

    Are u getting a fault warning light coming on.



    #6
  8. WRN
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    WRN New Member

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    [Aug 14, 2003]


    Is this something the dealer could do? without spoting the chip?
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  9. Mo-S3
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    Mo-S3 Member

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    [Aug 14, 2003]
    it going to be really difficult to explain to the dealer how u have managed to get the flat spot at that point, especially if u do not want to declare the chip to them. My dealer is great, he knows i have a remap and i just explained the problem i was getting and a possible way to fix so he did it.
    Does it do it all the time??
    #8
  10. WRN
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    WRN New Member

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    [Aug 14, 2003]

    Well no, only when I been hoofing for a bit, then not only do the brakes fade badly (and smell) but the flat spot is quite bad. Actually it's only been in the recent heat that it's been as bad.
    #9

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