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<P>Alasdair,</P>
<P>There are a lot of things that could affect your idle - I just went through this whole ordeal myself.&nbsp; First, check your idle&nbsp;stabilizer valve: turn on the ignition, but don't turn over the engine - you should hear/feel the ISV buzzing.&nbsp; You can also check the harness that plugs into it for continuity.&nbsp; If that is fine, check the ISCU - its behind the rear passenger side taillight.&nbsp; If its not the "B" version, you should replace it anyway.&nbsp; See if it looks burnt at all or if wiring for its harness is damaged at all.&nbsp; Check for continuity coming from it -all this info is in the Bentley.&nbsp; If the ISV and ISCU are okay, then look for air leaks - exhaust, etc.&nbsp; Check the oxygen sensor.&nbsp; Check your throttle valve - check for continuity and make sure the throttle is set properly.&nbsp; And finally, my problem ended up being a bad throttle
cable which wasn't apparent at first until it gradually got worse and my gas pedal started sticking in the acceleration mode.&nbsp; The first time I had this problem though it was the ISV, so start there.&nbsp; There is alot of information on this problem in the archives as well - its pretty common.</P>
<P>Good luck,</P>
<P>Marla</P>
<P>'87 Westy GL<BR><BR></P></DIV>
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<DIV></DIV>From:&nbsp;&nbsp;<I>Alasdair Crawford &lt;alasdair@VALLEYSOARING.ORG&gt;</I><BR>Reply-To:&nbsp;&nbsp;<I>alasdair@VALLEYSOARING.ORG</I><BR>To:&nbsp;&nbsp;<I>vanagon@GERRY.VANAGON.COM</I><BR>Subject:&nbsp;&nbsp;<I>87 Westy High Idle</I><BR>Date:&nbsp;&nbsp;<I>Mon, 30 Jul 2007 21:49:15 -0400</I><BR>&gt;Last weekend my 87 Vanagon suddenly developed a 3600rpm idle!&nbsp;&nbsp;Found that if I disconneced the lead to the Idle controlvalve it imemdiately dropped back to normal 850rpm.&nbsp;&nbsp;Would this suggest a valve problem or does that mean something else feeding the ECU is telling it to request 3600rpm?<BR>&gt;<BR>&gt;Trying to decide whether I should replace the valve (a $150 experiment) or just take it to the shop for real trouble shooting.<BR>&gt;<BR>&gt;Thanks,<BR>&gt;Alasdair Crawford<BR>&gt;87 Westy<BR></FONT></BLOCKQUOTE></div><br clear=all><hr> <a
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