Thank Ben.  I was thinking the same thing; the rad may
not be heating up enough to switch the fan on.

This means either:
1) the thermostat is stuck in the closed position
2) the rad is plugged
3) the waterpump isn't moving enough water

Sure do hope it is the thermostat, but...the temp
gauge looks normal when the van is in motion - so the
rad must be cooling enough coolant to keep the engine
at normal temperature. If the thermostat was stuck
would there be much difference between the cooling
while in motion vs at a standstill?

Eric

 --- The corruptor <huotb@VIDEOTRON.CA> wrote: > Hi
Eric, mmmmm.....
> Most vanagon i have worked on; low speed kick in at
> 2/3-3/4, normal temp
> (highway) is a bit below or over the light.
> The switch and fan system are independente from the
> rest of the cooling
> system, you can easily test the switch in the van or
> on the bench,
> Heat the switch with something (hot air) to test
> this one and a voltmeter.
> But am sure the switch is NOT the problem.
>
> http://www.benplace.com/front_radiator.htm
>
> So the way i see things is the rad is not hot
> enough!!!
> You may have air-pocket somewhere in the system.
>
> Do some more bleeding, find a steep hill and drive
> this one up and down a
> few time, open the rear!!!! and front bleeder screws
> in between.
> You should also check/test the thermostat in hot
> water.
>
> Cheers, Ben
> http://www.benplace.com/

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