testing cooling fan and thermoswitch.

[roccit_53 at scirocco.cs.uoguelph.ca (C Boyko)]

On 5:59 pm 12/10/06 julie@menloparkrandd.com wrote:
> No The fan starts when the engine needs to cool. That is set by the
> thermo switch on the lower PS side of the radiator. The buzzing might
> be the fuel dist, a spring loaded pressure relief is built in so that
> when the pressure gets to a certian point, it feeds it back to the
> tank. Under load the buzzing will stop as it feeds all the fuel to the
> engine. Best way to test this is to start the car, accellerate at a
> high rate, climb out on the hood and listen. Well maybe not. Trust me
> then :)
>
> 
Or just leave the latch unhooked and delete the hood? (Sorry, couldn't
resist)

But yeah the fan won't always run when the engine does, it may run on after
you shut it down too for a while if it's hot enough. And a light buzzing is
normal. The three wires likely provide for a high and low speed.
Cathy