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whats wrong with my a3 tdi140????

Discussion in 'A3/S3/Sportback (8P Chassis)' started by TRACTORBOY, May 21, 2009.

  1. TRACTORBOY
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    TRACTORBOY New Member

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    [May 21, 2009]
    can anyone help please? my cars been for a diagnostic and no faults were picked up! my car judders when i accelerate when the engines still cool. as soon as i reach full temperature the car is perfect! ive replaced the coolant sensor could it be the turbo? any help would be greatly apreciated!
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  3. denzelburner
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    denzelburner Member

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    [May 21, 2009]
    Auto-choke?
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  4. Damo S
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    Damo S New Member

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    [May 22, 2009]
    It definately wont be the turbo, so dont worry about that.
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  5. gixxer600k4
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    gixxer600k4 Member

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    [May 22, 2009]
    it does sound like it could be the auto choke. because if it only happens while engine warms up. whats it like when you rev it from cold at stand still?
    #4
  6. Twizzler
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    Twizzler Member

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    [May 22, 2009]
    Diesel cars don't have chokes.
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  7. Twizzler
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    Twizzler Member

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    [May 22, 2009]
    The likely cause is fuel starvation, possibly caused by the injectors. Were they causing overfueling the electronics would complain, as emissions would increase. If underfueling is the problem, caused by the injectors or fuel pumps, the electronics will think all is well whilst the engine will know differently.
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