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Re: Rough idling 88 E30 M3 (archive)

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Posted by Stan on May 02, 2000 at 13:56:08:

In Reply to: Rough idling 88 E30 M3 posted by WJCarnes on May 02, 2000 at 12:54:51:

Have you tried adjusting the usual things? TPS, base idle etc. My idle went from bad to great by simply resetting the base idle. Which the dealer never did for the prior owner. The idle control valve has to be deactivated by shorting 3 leads together which deactivates it. I can look up which ones if you need this info. Then you adjust the single large screw near the base of the throttles and then reactivate the ICV. Other things like an exhaust leak near the O2 sensor, bad O2 sensor, valve clearances off can also make a difference. So I'd try to adjust things before replacing stuff.


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