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Thread: Car idles at 1500 no matter what I do.

  1. LO-vw
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    Car idles at 1500 no matter what I do.

    09-30-2012 09:14 PM #1
    I can play with the idle screw and kill it and open it up and somehow it will still find a way to idle at 1500.
    It will creep up but eventually it idles at that speed.

    Any ideas? Im guessing the car is now in open loop.

    Car ran and drove great, then I did a hard launch and its been idling high.
    FS: Happich Replacement seals

    **WTB: G60 or lysholm chargers** **WTB: LED R mk6 tails no fog** **WTB: 2.0 20v pistons and rods**
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  3. Prof315
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    10-01-2012 07:07 AM #2
    Quote Originally Posted by LO-vw View Post
    I can play with the idle screw and kill it and open it up and somehow it will still find a way to idle at 1500.
    It will creep up but eventually it idles at that speed.

    Any ideas? Im guessing the car is now in open loop.

    Car ran and drove great, then I did a hard launch and its been idling high.
    Sounds more like a vacuum leak to me
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  4. corradolover1
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    10-01-2012 02:34 PM #3
    What sucks is WHICH vacuum line is the problem, because there's too many.
    but, I'm sure if I had some time, I'd get the soapy water in a spray bottle and get to work!
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  5. weejunGL
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    10-01-2012 02:54 PM #4
    check that small hose that connets the ISV to the intake manifold ,that one cracked on mine once. and i got high idle due to that

    i've never seen 1500rpm out of a small vacuum hose break before, it has to be bigger then 3.5mm inner dia for that
    -==[Golf MKII G60 Syncro]==-
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  6. jeffs vw
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    10-02-2012 05:09 PM #5
    Or check the two behind the throttle body.
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  7. LO-vw
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    FV-QR

    10-02-2012 08:36 PM #6
    I can pinch the line to the ECU and the car dies.
    I pinch any other line and nothing happens.
    FS: Happich Replacement seals

    **WTB: G60 or lysholm chargers** **WTB: LED R mk6 tails no fog** **WTB: 2.0 20v pistons and rods**
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  8. jeffs vw