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Thread: Last resort for poor idle .

  1. #1
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    Last resort for poor idle .

    I suppose now I need a vagcom , as I’m out of ideas .
    The ISV has been cleaned.
    The ISV has been changed.
    I’ve had all the vac hoses off and there are no splits.
    I’ve cleaned the plugs to the vac lines .
    The MAF has been pulled whilst the engine is running and the note changes and it starts to stall.
    I also experienced a loss of throttle / power which I think was fuel related.
    I’ve fitted a new fuel filter. Obviously the new filter was dry and it took two turns of the key to fire, I would think this rules out the pump , if it was on its way out it should have struggled I would of thought.
    The FPR is only a few years old too.
    The plugs have only done 1500 miles or so .
    The ignition leads are 1500 miles too.
    Dizzy is fine and the rotor arm .
    I’ve cleaned the throttle body too, ok so it was still on the car but ive opened the butterfly and got in as far as I could.
    So I think the only option is now a vagcom check .

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

  2. #2
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Vagcom would be a good idea, might give a suggestion of where to look.
    Just like a golf................But better!!!

  3. #3
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    I think I will be clutching at straws otherwise Jim . I could spend hundreds replacing parts I don’t need until I found the problem.

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

  4. #4
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    I’ve had another check this weekend.
    I knew it wouldn’t help but it can’t help to try .
    I sprayed easy start to check for vac leaks again .
    The coil has been changed.
    I’ve fitted new plugs .
    I’ve removed the BMC , just in case it was dirty and playing the MAF up.
    I’ve unplugged the ISV , whilst the car is running and it made a difference so it’s working,I then fitted another working ISV , just in case .
    Result . It’s still the same sketchy idle .

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

  5. #5
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Is it just the idle? Does it run ok apart from that?
    Just like a golf................But better!!!

  6. #6
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    Yes jim . Pulls like a train . Maybe I have narrowed it down to the potentiometer?. I’ve checked the wires to the electrical plugs too. They are wrapped well and no amount of wiggling alters anything.

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

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