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Date:         Tue, 16 Sep 2003 22:14:49 -0400
Reply-To:     Germain <reglys@SYMPATICO.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Germain <reglys@SYMPATICO.CA>
Subject:      Re: Idle Control Unit (not valve)
Comments: To: Pat Callaghan <patcal096@COMCAST.NET>
Content-Type: text/plain; charset="iso-8859-1"

Hi Pat

Your ISV for any raison could be sticky and overcharging the ISCU. Check the main transistor (BD438) if it is not overheated. Collector of the transistor is connected to ST1 or ST2 of the ISCU.

When I put 12 Vdc on the ISCU (+ on terminal 15 and - on terminal 31) with the ISV connected to ST1 and ST2, the ISV is humming.

Germain

----- Original Message ----- From: "Pat Callaghan" <patcal096@COMCAST.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Tuesday, September 16, 2003 3:36 PM Subject: Idle Control Unit (not valve)

> Hi all, > > About 10 months ago, I replaced my ICU. Now all of a sudden, my bus is > showing the same symptoms as before I replaced it. Stalling when cold & I > push the clutch in, will not pause at 1200RPM but dumps down to 500RPM or > less. If it is bad again, what could cause this to fail this soon? I still > have my old one. I was going to try & fix it but never got around to it. > Any ideas? Thanks. > > Pat Callaghan Jr. > 87 Westy GL > 90 626 LX > Portland,OR. > http://home.comcast.net/~patcal096


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