I thought all vans had electric cooling fans which were unaffected by
engine speed?

Mike

On May 18, 2012, at 3:11 AM, Dennis Haynes wrote:

> Especially for the air cooled engines you should not really be doing
> extended climbs at low RPM. Down shift and let it rev. Lugging (when
> increasing throttle does not increase speed) causes this engine to
> heat up
> quickly and low rpm also means low cooling fan output. You need to
> determine
> if your problem is loss of fuel or ignition. I believe your 80 still
> uses
> ignition points and condenser. A bad condenser can cause loss of
> spark and
> be affected by heat. The loss of spark from the points-condenser also
> effects the operation of the injectors.
>
> For the auxiliary air regulator these hardly ever go bad. Check to
> make sure
> it is in fact getting power and check its resistance to determine
> that the
> heater is not open. Be sure the wiring is not switched with the cold
> start
> valve or thermal time switch. This device was used on a lot of
> vehicles. You
> should be able to get something close or a good used one.