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Author Topic: Is it the ISV or is it not????  (Read 1359 times)

Offline dan7

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Is it the ISV or is it not????
« on: 05 May 2009, 17:01 »
Over the last few days, my 1990 1.8 totally standard KR has developed a problem. Cold starting is very troublesome. VERY lumpy idle, but clears after about 3k, parked up. If I drive it, it jolts and kangaroos like fcuk! After about 5 mins of driving on the bypass, it warms up and drives and idles perfectly! If this was the ISV, would it idle after warm up? I left it for 10 mins and restarted it, and it idled fine! But after 4 hours, lumpy idle again! Also, using buckets of fuel whilst in this state! Any advice please guys?
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Offline Dan34

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Re: Is it the ISV or is it not????
« Reply #1 on: 05 May 2009, 17:07 »
do the revs change when you unplug the isv? also what conditiona re all the breathers like around the isv? i cleaned mine all out and runs great now.

one other thing do the revs change when you unplug the blue ecu temp sender?

Dan
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VeeDubGTI16v

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Re: Is it the ISV or is it not????
« Reply #2 on: 05 May 2009, 17:10 »
that wont be the isv, more likely the wur/5th injector
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Offline dan7

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Re: Is it the ISV or is it not????
« Reply #3 on: 05 May 2009, 17:26 »
Quote from: veedubgti16v on 05 May 2009, 17:10
that wont be the isv, more likely the wur/5th injector

That was what i was fearing!!!!! Having a look after my bangers n mash. Let you know how I get on. Btw, could anybody describe the WUR for me, bit unsure tbh! Is it the fist sized thing bolted to the front of the block?
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Offline rubjonny

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Re: Is it the ISV or is it not????
« Reply #4 on: 05 May 2009, 17:29 »
i had a similar issue but not quite as bad, i disconnected the wur and that sorted it.  probably down to the idle mixture being off, but siojce car was coming off the road soon anyway i never bothered to look into it any closer!
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Hello my name is John and I'm a dub addict.

Offline Mr Blue

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Re: Is it the ISV or is it not????
« Reply #5 on: 05 May 2009, 18:13 »
similar issue a while back on a valver. Lumpy idle and would cut off and not start again! Was the cold start value or WUR.
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Offline dan7

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Re: Is it the ISV or is it not????
« Reply #6 on: 05 May 2009, 20:27 »
Just out of interest, what's actually inside the WUR??
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Offline Conker

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Re: Is it the ISV or is it not????
« Reply #7 on: 05 May 2009, 22:46 »
« Last Edit: 05 May 2009, 22:50 by Conker »
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