Mathew, mathew, mathew, yee of so little faith, if I did not know better I would say yeh name is thomas. The after shutdown cooling fan action is about cooling the radiator and coolant in the radiator not the motor. By this air flow, overboiling is prevented. It's the old pv equals nrt equation. If T temperature goes up than pressure and or volume goes up and coolant goes pissing our the back blue cap into the overflow everytime you shut off a hot engine. Which brings me to my busdepot question. Busdepot sells a sensor switch which is a lower temperature switch for the two speed radiator fan. Does anyone know if it works better? thanks gary Date: Mon, 29 Sep 2003 09:30:49 -0700 From: Matthew <poll7356@UIDAHO.EDU> Subject: Re: fan switch or sensor yes, but it is stupid. On the a2's the fan will pull air through the radiator and over the engine to cool it. Whereas the vanagon will pull air over the radiator but that air doesn't get over the engine nor does the coolant cycle. What is needed is a small electric pump that will cycle coolant while the after-run coolant fan is on. Unless there is enough thermo-syphoning going on to make it work. Doubt it.
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