Brian Doss said:

>Is it the ceramic resistor that actually controls the kick-in of the fan? Lately, I
>think that my fan only kicks on just before the point at which the engine's
>ready to overheat.

I can't get the fan on my '85 Westfalia to come on at all. When I pull the
plug from the thermo switch and jump the terminals, both speeds work fine.
When I run the AC, the fan works in override mode, but it won't come on
during normal operation, even with a new thermo switch. I checked the old
thermo switch in a pan of water--no thermometer available when I need
one--and the low speed switch closed for sure at boil. I never got
continuity on the high speed side, and I did not think to check the new
thermo switch before installing it. My Bentley Manual doesn't appear to
picture another activation device in the circuit. Is my new thermo switch
bad?

The van will sit at long traffic delays and peg the temp guage with the
warning light blinking, but no fan. So far it hasn't boiled, but I expect
steam at the next long light.

Any ideas.

Ranger Jim