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Date:         Tue, 1 Apr 2003 17:37:24 -0500
Reply-To:     Dennis Haynes <dhaynes@OPTONLINE.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <dhaynes@OPTONLINE.NET>
Subject:      Re: Van runs hot in traffic jams
Comments: To: Greg Kriss <carat90@LYCOS.COM>
In-Reply-To:  <IDDCKKICAAPODEAA@mailcity.com>
Content-type: text/plain; charset=us-ascii

Sounds perfectly normal. When the van is not moving, there is no air flow through the radiator. As the radiator warms up , the warm water coming out will cause the engine to run hooter. When the coolant in the radiator reches the set point for the fan switch, the fan will turn on. If the tempaparature continues to rise, the fan will go into high speed.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Greg Kriss Sent: Tuesday, April 01, 2003 7:33 AM To: vanagon@GERRY.VANAGON.COM Subject: Van runs hot in traffic jams

Have a 90 Carat with an auto trans. Engine has maybe 150K on it. The van runs fine, minimal oil useage and almost no coolant useage. Normal driving, running around town, or at 60mph on the highway, the temp guage always stays cool below the idiot light in the center of the guage. But when I get stuck in a traffic jam, after a few minutes the van runs hotter with the guage needle above the idiot light. I was stuck in a 5 mile backup in NYC Sunday night moving along between stop and go up to maybe 15mph. (over an hour of creeping along). Outside temp around 35 degrees. The needle was above the idiot light and once or twice the fan went on. Van never came close to overheating. Air flow I'm sure was probably minimal in front of the van. Once through the backup, and up to a steady 40+ mph the needle went below the idiot light. Rest of trip van ran cool.

Warmed up the van for 15 minutes yesterday morning and needle never went above the idiot light. Running around town for an hour or so yesterday, van ran cool as usual.

What goes? Is this normal?

My guess is that the cooling syatem is a bit under-designed for traffic jams.

thanks

Greg

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