5kcst, Cooling, Fan, Multi Function Temperature Sensor

["Gregory Dillon" <gdillon@jps.net>]

Over the last six months in my '86 5000 Turbo, I replaced a radiator when
the plastic outlet broke, the thermistat and various hoses, but I still
can't get the cooling system just right.

The symptoms are: the temperature guage normally shows the engine at less
than full tempeture, (straight up rather than between the two dots), but the
electric cooling fan comes on frequently, very little heat comes out of the
heater, (the blower motor works), and the car engine feels hot.

I thought I'd change the multifunction temperature sensor but I'd appreciate
some advice first on what's wrong or how to test the sensor.

Thanks