164 electric cooling fan sillyness

[j^k doskow <doskow@xxxxxxxxxxxxxxxx>]

Hi!
    my '94 164Q which typically runs ~165 degrees was
    regularly getting up over 200 degrees after just
    a few minutes of driving in town, when i realized
    that the electric cooling fan was not ever running!

    the control circuit fuse was OK, the power fuse was OK,
    as was the fan, resistor, relays, connections,  i replaced the
    radiator mounted temperature switch, finally noticed
    the fan going on for just a few seconds then shutting off.
    there was a hairling crack in the 40A power fuse (mounted
    in plastic box on the firewall) a few seconds of current
    made it warm enough to twist a little & open the circuit!

    also, i'd forgotten that by turning on the A/C, a freon
    pressure switch makes the fan come on at low speed, a convenient
    way to test the fan circuitry without having the engine idling
    at 220 degrees, an engine and cooling system test it passed admirably
    but i'd rather not repeat!
jak
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