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Losing speed

Discussion in 'A3/S3 Forum (8L Chassis)' started by ZeroOne, Mar 6, 2013.

  1. ZeroOne
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    ZeroOne New Member

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    Hi friend! I have Audi A3 8l 1.9 TDI 66kw 1999year..i have a problem with speed.. when the accelerator past 3 (1/minx1000), the engine loses the power, the accelerator pedal is passive..like the car is choking..
    p.s sorry for my english..
    #1
  2. Cobra88
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    Cobra88 Active Member

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    Change the Diesel filter and scan for fault codes with VCDS ;)

    Could be blocked Fuel fiter
    Blocked Catalyst
    No vent in fuel cap etc etc
    or many other faults

    Scan it for codes and see what it tells you is broken
    #2
  3. ZeroOne
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    ZeroOne New Member

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    I make diagnostic, and there is no trouble codes.. I forget to say that when it shows the problem, I power off the engine..and is good...but when again past 3 rpm again same problem..
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  4. Cobra88
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    Cobra88 Active Member

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    Sounds like your overboosting and hitting limp mode
    but odd to have no fault code

    can you do an auto scan in VCDS and post the log in here ?
    Regards
    Rick
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  5. ZeroOne
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    ZeroOne New Member

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    IMG_20130315_174617.jpg
    I made diagnostic with other kit and shows P1557 (Charge Pressure Control: Positive Deviation), and in AutoData shows this.. but I can't find this sensor on engine..can you help me? with some picture or etc..
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  6. ZeroOne
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    ZeroOne New Member

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    BUMP!
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