I don't have my Bentley here so I don't = know the page numbers... but there are tests for this in there...
 
Bill
----- Original Message -----
From: William = S. Brown Jr.
To: vanagon@GERRY.VANAGON.COM
Sent: Thursday, September 21, = 2000 7:30 PM
Subject: 86-Idle Stabilization Question

How can I determine if an idle problem is the idle stabilizer = control unit, or the idle stabilization control valve?  With both plugged = in I get about 2000 RPM, so I just unplug them and set the idle at about 1100.