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Author Topic: Car revs on its own ???  (Read 843 times)

Offline Jet

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Car revs on its own ???
« on: 27 October 2005, 09:21 »
Hi another quick question, when I start my car (mk11 gti 8v 91) It idles at about 2.5-3000 revs ! once i have driven half a mile the engine will idle fine. However once the temp gets near the middle of the temp gauge (usually when i am stuck in traffic) it will start to rev itself over and over and over ..... goes between 1000 and 3000, never smooth just constantly reving itself, I have recently had the cold start valve changed would this be the source of this odd self reving weirdness  cheers
Jet :angry:
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Offline Organisys

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Re: Car revs on its own ???
« Reply #1 on: 27 October 2005, 12:12 »
Sounds like the blue temp sender has failed. This sends coolant temp to ECU.
It is mounted on the front of the block, just off a coolant pipe flange.
Replacement can be had from dealer, GSF amoungst others.
 :smiley:
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Offline Jet

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Re: Car revs on its own ???
« Reply #2 on: 27 October 2005, 17:45 »
dude your ace if that works i will be eternally gratefull!!!!
Jet :smiley:
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Offline jase555

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Re: Car revs on its own ???
« Reply #3 on: 27 October 2005, 20:10 »
try some brake cleaner in the ISV too
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DUBS DONT DIE, THEY JUST GET LOWER!!

Offline rubjonny

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Re: Car revs on its own ???
« Reply #4 on: 28 October 2005, 12:51 »
dont use brake or carb cleaner in the ISV it will damage the internals.  Use petrol or white spirits :)
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