Peter, I have been faced with same problem on my '84 7-passenger for better
part of past year.

Something is causing idle, when van has been out in hot sun all day, to be
very low when I start the engine.  In order to keep the van from stalling, I
have to have idle screw backed out 2 turns CCW from full CW.  When engine is
fully warmed up, idle speed is about 1400 rpm with auto transmission in
"Park"

I have decided to live with the problem until cold weather sits in here in
GA.

John Lauterbach
Macon, GA
----- Original Message -----
From: "Peter Krogh" <VW85Westy@AOL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, September 22, 2001 7:57 AM
Subject: Help! High Idle speed

> I got no response to this post a few days ago.  Anybody have any ideas
where
> to begin on this?  I am trying to track down the cause of my high idle
speed.
>
> Once the engine gets warm, the idle stays at a steady 1800rpms.  This did
not
> happen before the engine swap.
>
> Observations:
>
> Two things that were repaired at swap time were A/C and power steering,
(both
> previously out of service for many years) and my mechanic said that either
of
> these might have some effect, as the cpu boosts idle to compensate for
> increased load.  Is there some mechanism for the a/c or p/s to
communivaste
> with the cpu?
>
> There is only one wire coming off of the a/c compressor, and there is a
> second contact that looks like it wants a wire on it.
>
> Additionally, the oxygen sensor is not connected, can't find a wire that I
> can plug it into.  It has a female spade bit connector on a thin brown
wire.
> There is a (12 guage?) green wire, about 4 inches long with a female spade
> bit connector coming out of the wiring harness near the control unit.  Is
> this the oxy sensor wire?  Should there be some kind of additional
connector
> or something?
>
> The idle stablizer was bypassed when I got the van back, reconnecting it
has
> made no observable difference in the way the van runs at all.
>
> As always, any help appreciated.
>
> Peter & Zippy
>