Date:         Thu, 28 Sep 2000 12:47:23 -0400
Reply-To:     Lawrence Johnson <larry_avery.johnson@SYMPATICO.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Lawrence Johnson <larry_avery.johnson@SYMPATICO.CA>
Subject:      Re: Idle Stabilizer Control Unit Specs
Comments: To: "William S. Brown Jr." <brown6@ALASKA.NET>
Content-Type: text/plain; charset=us-ascii

Steve, the most common component that burns out on the ISCU is a power
transistor. I have replaced my with an audio transistor (NPN I think but you
had better check to be sure). IMHO this transistor burns out when the Idle
Stabilizer Control Valve starts making demands for too much current. I think
this happens when the valve starts to stick. I can't prove any of this but
its fun to speculate. Anyway it can't hurt to clean/lubricate the ISC valve
as well as replace the transistor.
If its not the transistor, I can't help you, sorry.
-Larry
-'86 Syncro Westfalia

"William S. Brown Jr." wrote:

> Does anyone know where I can get a schematic for inside of the Idle
> Stabilizer Control Unit?  I have an 86 Vanagon with the 2.1 L engine.  I
> have opened mine and found a burned part.  I don't know what it is, so a
> schematic would sure help.  Cheep to fix, if I can find out what the part
> is, but expensive to buy a full replacement.
>
> Steve
> brown6@alaska.net
> 86 Vanagon