macca194

My mk1 focus 1.8 petrol as started to continue to rev a little slighty while changing gear. If I change gear normally it does it but if I wait a second or 2 longer it's fine. Thought possibly a sensor problem so cleaned the maf sensor but still doing it. Is worse when cold compared to when engine is up to temperature and while cold in 1st say as u pull up at a junction with clutch down it revs to 1500rpm and holds until u set off. Only done it since a service about 4 week noticed it for last 2 week at least.
Is there anything I'm missing?

fiend

iTrader: (1)

Try cleaning the Idle Control Valve.

macca194

Where bouts is it?

fiend

iTrader: (1)

Underneath the inlet manifold. Its a small cylinder shape, 2 bolts holding it on and will have a loom connector going to it.

macca194

http://www.halfords.com/webapp/wcs/s...5750&langId=-1

This ok to clean it with have some left from the maf sensor

fiend

iTrader: (1)

Yeah that should be ok. There will be a paper gasket between the sensor and inlet manifold aswell.

Fiddy

My mondy was doing it pretty bad, removed the ISCV, cleaned it, was still doing it, fortunatly i had a spare ISCV, cleaned and fitted that, job jobbed.