have a big prob when i stat my saff from cold...it starts fine and idles ok. after a while maybe one min it will idle at two thousand rpm? will sometimes drop back down but will almost always go back up....already changed the iscv. whats next? tps?

 

btt

 

engine coolant temp sensor?

 

its fine when it heats up. the car should never idle that high, so even if the coolant temp sensor is goosed surely that would not make it idle so high?

 

did you replace the iscv with a second hand unit or new?

 

pull the plug off the iscv when u start it first thing, if revs rise then its working fine afaik, could it be the cold start comming on and when it heats up it idles proper?

 

replaced the iscv cos it was hunting on idle. was ok for a couple of months now doing the high idle thing. idle perfectly if you pull the plug off the iscv which was second hand when i bought it.

 

my wifes XR3i mk6 does this, i thnk it might be on hers that the oxygen sensors snapped off?

 

maybe the iscv u got on now is fubar? i cant mind what way around it is to test em

 

have put my old idle valve back on and it now hunts on idle again. starting to get annoyed!!

 

but has it stopped doing the silly high revs thing?

 

no still goes up and idles at two thousand.
did take a little bit longer b4 it did tho...about 2 mins.
fecking annoying!

 

my idle was a bit over the place on my FRST, when i had it tuned maty adjusted my co2 sensor thing, could yours be playing up?

 

Definitely sounds like 2 dodgy ISCV's!!!

 

think so phil!
whos got a cheap new one?

 

car cut out tonight after driving it for about two mins.
defo a problem when heating up cos when i eventually managed to get it started again there was loads of fuel smoke coming out of the exhaust.
does this means it had flooded itself?
ok now but when it was heating up it was running on three cylinders for a bit.
does this point to the engine temp sensor?

 

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i had same prob and never fixed it, altho it did happen all the time! either iscv or chip

 

think my prob is defo coolant temp sensor but where is it on the engine?
anyone any idea of how much they are as the only one i can find is £18 but i think thats for the temp gauge on your dash.
any pics would be great!

 

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