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Date:         Fri, 18 Mar 2005 13:29:44 -0600
Reply-To:     Bruce Nadig <motorbruce@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Bruce Nadig <motorbruce@HOTMAIL.COM>
Subject:      Re: Radiator Fan Turns On But Not Off
Comments: To: albeeee@mchsi.com
In-Reply-To:  <423B28BD.6060109@mchsi.com>
Content-Type: text/plain; format=flowed

Good suggestion, but this can't be the culperit in my case. It behaved this same way before I had the A/C charged (the system had been completely empty).

Any other suggestions?

Cheers, Bruce motorbruce@hotmail.com

>From: Al and Sue Brase <albeeee@mchsi.com> >To: Bruce Nadig <motorbruce@HOTMAIL.COM> >CC: vanagon@GERRY.VANAGON.COM >Subject: Re: Radiator Fan Turns On But Not Off >Date: Fri, 18 Mar 2005 13:15:09 -0600 > >Sometimes, over fill of freon will keep the fan on. (a switch on the high >side line turnsi it on as soon as the compressor starts. >Al Brase > >Bruce Nadig wrote: > >>Howdy From Texas, >> >>I've been off the list since mid-December - out of town and away from >>e-mail. I've missed ya'll. It is good to be back. >> >>I have an unusual problems on my '87 GL. The "radiator" fan will turn on >>when triggered by the thermo switch or the a/c, as it should. However, >>once >>it comes on - and it has always come on in the high speed mode - it stays >>on, no matter what. It will stay on until the there is no more power >>available. It will run long after the ignition has been turned off. The >>fan >>runs until it drains the battery or until the battery is disconnected. >> >>As some background, the van did sit undriven for about 16 months while I >>was >>doing an engine conversion to an '87 Porsche 911 Carrera 3.2 liter engine. >>The radiator and its thermo switch are no longer a factor. Instead I have >>an >>oil cooler with a thermo switch that behaves as the radiator thermo switch >>does (except it is on/off instead of off/low/high). >> >>The thermo switch shouldn't be the problem as I have started the fan using >>a >>jumper wire with the thermo switch disconnected. Once the jumper is >>removed >>the fan remains on high. When the A/C is switched on, the fan will also be >>switched on and will remain on until the power is disconnected. >> >>Without having investigated very far, I am guessing that there may be a >>problem with the control unit that powers the fan on and off. I assume >>that >>this control unit is a simple relay, but I'm not sure. The Bentley manual >>isn't specific. Where is this control unit/relay located? Is it behind the >>panel at the left rear of the van? >> >>Any and all help is greatly appreciated. >> >>Cheers, >>Bruce >>motorbruce@hotmail.com >> >


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