Date:         Wed, 16 Jun 2004 06:10:26 -0700
Reply-To:     TJ Hannink <tjhannink@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         TJ Hannink <tjhannink@YAHOO.COM>
Subject:      Re: Temps in the 100s today, need ideas on extra cooling
In-Reply-To:  <20040616125048.M16500@gull.us>
Content-Type: text/plain; charset=us-ascii

On Tue, 15 Jun 2004 19:19:15 -0700, Doug in Calif wrote
> Well I took the newly rebuilt 89 out for a pretty good drive today.
> When I left the inland area (temps in the 100s) the high speed level
> of the fan would come on if I sit at a stop light with the AC on.
> Once rolling for a minute or two it would knock down to the lower speed.



It sound like the high side pressure on the A/C is getting high enough to turn on the second stage fan relay. The pressure switch is tripped around 220 psi, high side pressure for R-134a is usually 2.2 times the ambient temperature, so it sound like the system is operating properly.

Mine ran non-stop on that speed until the van interior cooled off a couple of weeks ago when our temperatures were in the upper 90's. Now that its back to normal (in the lower 90's), it runs only when I initially start the A/C after the van has set in the sun, or if I stop and idle for more than 30 seconds.

Good luck,


TJ Hannink
Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
1981 Bluebird Wanderlodge, FC-33
Winter Park, Florida
http://home.earthlink.net/~tjhannink/
http://groups.yahoo.com/group/wolfsburg_campers
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