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Old 08-25-2002, 01:19 PM
DieselGuy DieselGuy is offline
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Join Date: Feb 2000
Location: Santa Clarita, CA, USA
Posts: 133
high idle speed fixed

Update: The car was taken to an independent shop to confirm my speculation about a faulty idle control valve. $500 later ($400 for the idle control valve), idle is back at 600-650. Pretty expensive confirmation of all my "diagnosis." I didn't want to shotgun parts though. My friend is happy even though he felt a little ripped on the price of the valve.

Here's a related problem that was also fixed by the idle control valve. -->

1991 420SEL Fails CA emission due to advanced timing

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