c20XE idleing problem revving to high

[Markyc]

On my dizzy cap c20xe it is revving too high on idle. You start the car up and its fine,drive it for a few mins and the it idles high (dont no how high as i have no rev counter atm)

Do the have a idle control screw or valve? if so where abouts is it?

or could it be something else??

Rep for good advise

Cheers mark:thumb:

[MattBrown]

CTS?

Is it idling like its on tickover?

[Markyc]

cts????

when i first start it up, it idles nice like its on tickover but when u put the clutch in after driving, during driving etc it revs up to between 1200-1700 est.

[Markyc]

i have wd-40 all the throttle cable throttle springs etc and it helped a little bit. There is abit of movement in one of the main springs could it be that?

[eddgsiturbo]

my mate had this problem on his astra gsi, his was the throttle position switch on the throttle body, its worth changing the coolent temp sensor aswell, the the sensor with a plug just under the hose that goes from the head to the top of the rad. think its a blue plug, disconect that and see if makes a differance, if not try the throttle switch on the side of throttle body.

[Andy]

Sounds like a knackered throttle position switch to me