Date:         Sun, 19 Aug 2012 12:52:46 -0400
Reply-To:     Jonce Fancher <streetbugs@FRONTIER.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jonce Fancher <streetbugs@FRONTIER.COM>
Subject:      Radiator Fan Thermal Switch question
Content-Type: text/plain; charset="us-ascii"; format=flowed

Hi all
Just got back from a 2 Week Balls out drive outwest to 4 corners from
Michigan in the 85 Vanagon.

Had a few issues in the HEAT of Texas and OK.

The Rad Fan did not click on to it's HIGH speed. It did on the 1st
speed but not the 2nd.

The Motor cut off ( Sorry it is a Zetec Bostig Conversion. 1st group
Conversion )

Seems the Brain located above the muffler ( heat shield in place )
Seems the cut off over heat protection sensor on the motor cuts off
before the high speed on the fan kicks in, ( I THINK ).
Temps outside were about 102 to 106. It acted like the fuel pump was
over heating as well. Anyone ever have the Fuel Pump over heat.
I went ahead and swapped the fuel pump with my back up. ( which
didn't work. ( Love new stuff that does not work.)). Had to go into
town and find one. Swapped it and the issue continued. We wrapped the
Brain in heat shield and it seemed to make it a bit better but still
did it once or twice.

Need to check the Fan and the sensor. Can I put a switch in to bypass
the Thermal switch OR is there a different switch with different temp
settings??
I have no problem with a relay and switch install to control over heat.
I thought of installing a 2nd oil cooler ( which I have one on the
shelf with Fan ) But I think the extreme of the issue is the Brain is
located in the engine bay and the heat outside was HOT! But I do feel
the brain is cooking.

Few other issues on the trip but mainly good fun.

Jonce