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Thread: Diesel engine will not rev passed 2500 rpm

  1. #1
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    Default Diesel engine will not rev passed 2500 rpm

    Hi a mate of mine has a 2l diesel 04 reg vectra c and it will not rev passed 2500 just when revving it or driving

    he has renewed the egr / air mass valve / renewed the turbo pipes / looked for split vacuum pipes
    we have run out of ideas know
    Can anyone HELP please the car rune's spot on apart from this problem

    Jacko

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    Sounds like it's stuck in limp mode. Is the engine management light on?

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    Crankshaft sensor?

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    Quote Originally Posted by DNS View Post
    Sounds like it's stuck in limp mode. Is the engine management light on?
    Hi yes the light came on so he had it tec2 and it came up air mass valve so he replaced that and clean the code off

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    The light came on tec 2 code =air mass valve so renewed that and cleaned the code off


    Could it be the crank sensor what do others think?
    Jacko

  6. #6
    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    That's only a guess...I've no idea what it might be *sigh*
    These old DTi's can be a real pain in the a**e *sigh again*

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    Only tech2 again will tell... big problem with limp mode is that it means 99% of faults give the same symptoms...

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    Try driving the car with the MAF unplugged.
    If its better, then the mafs faulty ... i had this problem with my 2.2 DTi

  9. #9
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    which engine is it?

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    Regular Member Celes's Avatar
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    Vehicle : Opel Signum

    Trim : Sport

    Engine : 3.0 CDTI

    Year : 12/03

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    Quote Originally Posted by mattolly86 View Post
    which engine is it?
    2.0DTi Y20DTH

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