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Thread: knock/stumble when warm

  1. #1

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    knock/stumble when warm

    1.6lt-n13=1990

    car is fine when cold- warms up has a short of stumble hesitation knock whatever you want to call it every 3rd-5th second, if i slap the accelerator then let it idle the stumble seems way worse

    timing mark seems to be moving around then jumping on the stumble/hesitation not sure if timing or dizzi related-possibly original belt

    im hoping its a sensor problem

  2. #2

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    Check TPS operation is as it should be.

    A common problem is faulty/temperamental ECU's on N13's so perhaps trying another ECU, in hopes it's a good one can help.

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