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Author Topic: Idling at 3000rpm! HELP  (Read 1639 times)

Offline petprops1

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Idling at 3000rpm! HELP
« on: 09 October 2013, 12:27 »
Please can someone point me in the right direction.
I have a 90 spec 16v GTI and after a recent drive, the revs started increasing up to about 2500 rpm on its own.
I checked all the vacuum pipes and cleaned out the idle control valve, but that seems to have made it worse!
Managed to get a brand new one and now the car sits at 3000rpm from start and wont drop.
I'm tearing my hair out....
Anyone got ideas of where to look or had similar problems?
Thanks
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Offline PEZ_MK2GOLF

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Re: Idling at 3000rpm! HELP
« Reply #1 on: 09 October 2013, 14:41 »
Try adjusting the Idle screw on your fuel injection system when its up to temperature.
« Last Edit: 09 October 2013, 14:44 by PEZ_MK2GOLF »
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Offline Gambit

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Re: Idling at 3000rpm! HELP
« Reply #2 on: 09 October 2013, 16:53 »
check the throttle closed switch on the throttle body
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Offline petprops1

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Re: Idling at 3000rpm! HELP
« Reply #3 on: 10 October 2013, 15:31 »
Just to clarify. It is doing this also at start up from cold.

Thanks for the advice.
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Offline Diamond Hell

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Re: Idling at 3000rpm! HELP
« Reply #4 on: 13 October 2013, 00:25 »
Sounds like a vacuum leak from somewhere.  Wave an unlit blowtorch around the inlet manifold - if the revs pick up then you've found your vacuum leak.  :wink:
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