GoWesty publishes a troubleshooting guide for the 86-91 idle control
system:

http://www.gowesty.com/vano_idle_control.htm

Good Luck!

Matt

On Sun, 6 Feb 2005, jerry baldwin wrote:

> From: jerry baldwin <jlbaldwin52@GMAIL.COM>
> To: vanagon@GERRY.VANAGON.COM
> Subject: idle problem
> Date: Sun, 6 Feb 2005 11:55:28 -0500
>
> Hi All
>
> I've made it down two the Keys so now for some van repair. On the trip
> down in cold weather the van would kick buck and sometimes stall when
> I'd down shift. I had the temp 2 sensor and throttle position switch
> replaced before I left. As the weather warmed up eveything ran better.
> Once i awhile now it will seek from 1200 to 2500 RPM before it settles
> down to 900 RPM this will happen cold or hot.
> Any advice would be appreciated
>
> Jerry
>
> 87 Westy
>