Rough Idle

[milenia]

Hi,

I've recently had a service on the car, ie 5 weeks ago but the engine seems to be mis-firing and being very rough when idling.

Any suggestions?

Thanks

milenia

[saxowebby]

dodgy spark plug perhaps, coil pack, ht lead

[WelshyUK]

It will probably be the idle speed control valve (ICV), are the revs dipping whilst it's Idling? If so then this will be the case. If you do a search this has come up plenty of times. Hope this helps!

[-Richard-]

most likly idle speed control valve

if not, maybe:

spark plug, coil pack, ht lead

lamber sensor

[stevo67]

Dirt in th fuel system is anther 1.


Steve.

[milenia]

Hi,

The rev's are erratic a little bit but don't really dip. Stay around the 750 mark, if I take of the Air Box around 1000.

No HT leads on this one, Coil Pack present though. Is there a way to test these?

Thanks

milenia

[gdwelsh]

ICV imo... used to happen on my 106 XSi.

They are easy enough to change.

[milenia]

Hi,

ICV...

What's this part?

Thanks

milenia

[JoNaH_FTW]

same problem with mine i think. Idle is jumpy and very jerked when accelerating hard, the engine warning light also comes on sometimes after the engines been on for a while. Im going to an ecu dignostic place as it should show the problem if its to do with any electrical part

[stevo67]

Idle control valve plugs into the back off the throttle body where the inlet pipe of the air box goes.


Steve.

[milenia]

Hi,

I assume its affected by oil and the breather pipe just puts it there.

It is a good idea to remove the breather pipe and do something to it so it doesn't affect the ICV?

Thanks

milenia