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Subject:Re: 2.1 Engine idles at 2600 rpm; 2nd computer doesn't fix
From:John Bange
Date:Mon, 17 Apr 2006 22:52:53 -0700

> when I unplug the wire to the idle air bypass valve,
> the idle speed returns to normal

Well, sounds like you've narrowed the problem down pretty well to the Idle
Stabilizer system. Might be the idle air valve, but if it returns to normal
idle when unplugged, the valve obviously isn't stuck. Might want to try
shorting the sense circuits for the AC and PS idle switches, make sure
neither of them are the culprit.

--
John Bange
'90 Vanagon - "Geldsauger"