dodgy idle??????????

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eun
E30 Zone Camper
E30 Zone Camper
Posts: 1170
Joined: Thu Aug 04, 2005 11:00 pm
Location: plymouth

Post Wed Mar 29, 2006 1:50 am

i have a really dodgy idle

ever since i had the 2.5 dropped in its always been a bit dodgy.

and when revved its not like normal cars, if you give it a quick
jab on the throttle its quite lumpy and delayed and i know
its not supposed to be like this.

solutions anyone? :?

cheers eun :wink:
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bottlecapE30
E30 Zone Regular
E30 Zone Regular
Posts: 481
Joined: Tue Jan 11, 2005 11:00 pm
Location: Baltimore, MD USA

Post Wed Mar 29, 2006 1:53 am

i would check the idle control valve this causes 80% of poor idle problems
Image
1987 2.7l e30 m20b27 supercharging
1991 3.5l e30 m30b35 it is dead so sad
1985 3.5l e23 m30b35
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miniblob
E30 Zone Addict
E30 Zone Addict
Posts: 3153
Joined: Thu Jan 05, 2006 11:00 pm
Location: Croydon/Uckfield

Post Wed Mar 29, 2006 6:20 am

I've got a similar sounding problem with my 325i - i've tried testing the icv as instructed in the old haynes manual - it passes all the voltage & resistance tests, but haynes states that if disconnected with the engine running, the idle should rise to approx 2000rpm - mine doesn't have any effect when disconnected!!
Does that mean this is definately the problem??

Cheers,
Rob.
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