Two things come to my mind.  The throttle position switch is number one.
This needs to be working and properly adjusted.  The second is the power
steering idle up switch.  Check to see if this is working properly and if
not replace it.  Could also be a bad chip on the ECU.  This would be shown
by replacing the ECU with a known good one just for troubleshooting.

Hope this helps,

Ken Wilford
John 3:16
http://www.vanagain.com
Phone: (856)-327-4936
Fax: (856)-327-2242

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of George Goff
Sent: Wednesday, December 18, 2002 9:29 AM
To: vanagon@GERRY.VANAGON.COM
Subject: High Idle, Sometimes (NOT Idle Stabiliser Controller)

I thought I had seen about every kind of weirdness which a Vanagon can
exhibit, but I am open to any and all suggestions regarding this most recent
bout of perverse running.  At times, my '90 Syncro idles at about 2K.  The
strange thing is that when it is idling high, if I hold it with the brake
and
release the clutch slightly, I can drag the engine speed down to 1K and it
will hold that speed rock solid until the throttle is blipped.  As the
engine
has been gone over quite a bit, this one has me stumped.  Hopefully someone
will have had the same symptoms and he can save me untold hours of chasing
my
own tail.

Thanks, one and all.

George