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