Unplug the temp sensor behond the grill.  It has three
wires.  One brings in juice, the other two activate
the low and high speeds on the fan.  Connect the hot
wire to each of the other two wires - one at a time.
If the fan runs for both connections - once high and
once low - then your sensor is bad.

Z

--- Felder <felder@KNOLOGY.NET> wrote:
> It has occurred to me, during all this head and
> coolant replacement,
> that I have never heard the radiator fan come on.
> That would probably
> explain the high-side temps at idle and low speed.
>
> What's a good way to test to see if it the fan, the
> sender, and/or
> anything else involved?
>
> Thanks,
>
> Jim

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