Sounds like it's time to replace that switch. I had similar problems in my
'87 Fox, running the fan on high heated the switch up enough to melt the
switch plastic. Once the car was turned off, the plastic solidified,
locking the switch in position.

Probably culprit would be a weak connection inside the switch itself (weak
connection=higher resistance=heat).

Tim

At 06:53 AM 8/22/2003 -0700, Scott G wrote:
>Hello All,
>
>I have an '85 Westy and was recently on a wonderful trip through
>Yellowstone in the 90 degree smoky weather (with no AC), when my internal
>fan locked on high.  This is the fan that runs the defrost air,
>etc...  The knob will not turn at all and I am afraid to push it too hard
>as it seems ready to break.
>
>This morning, as I was warming the van up, the fan died for a few minutes
>and then came back on in full force--seemed like a loose electrical
>problem to me, but that doesn't explain why the knob is locked on full power.
>
>Any ideas??
>
>
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