M42 idle speed adjustment

Need technical Q/A then you're in the right place

Moderator: martauto

cheesebox
E30 Zone Regular
E30 Zone Regular
Posts: 261
Joined: Sat Jun 11, 2005 11:00 pm
Location: Buxton, Derbyshire

Post Wed Jun 14, 2006 1:17 pm

I can't get the idle speed below 1200rpm. There's no more adjustment left on the end-stop on the throttle cable linkage, and the cable is slack when the throttle's closed. Is there some other adjustment I can make? Haynes doesn't seem to mention it...
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Wed Jun 14, 2006 10:13 pm

There is no idle adjustment on any E30, or any other car made since about 1990 for that matter. Idle speed is controlled by the ECU.
Put the throttle stop back where you found it, never touch it again, and look for the air leak.
Dan318-is
Married to the E30 Zone
Married to the E30 Zone
Posts: 8006
Joined: Wed Jul 06, 2005 11:00 pm
Location: Surrey/London

Post Wed Jun 14, 2006 11:26 pm

Brianmoooore wrote:There is no idle adjustment on any E30, or any other car made since about 1990 for that matter. Idle speed is controlled by the ECU.
Put the throttle stop back where you found it, never touch it again, and look for the air leak.
and throw that haynes manual away, youve probably got the wrong one anyway!
cheesebox
E30 Zone Regular
E30 Zone Regular
Posts: 261
Joined: Sat Jun 11, 2005 11:00 pm
Location: Buxton, Derbyshire

Post Thu Jun 15, 2006 1:13 pm

Thanks Brian. Will have a look. It's been suggested the ICV may be faulty - is this likely?

318-is thanks for the advice, but I think I'll hang on to the manual what with it being the one for the M42.