does the engine not heat up or does the car not blow out warm air when you turn on the heat? If the car is not blowing out warm air when you turn the heat on then you need to check your coolant...
If you are not having problems, I would suggest a good visual and hands on inspection of all hoses, radiator, radiator cap, fan clutch, belts, suspected leaks, loose clamps, coolant level, age and...
cooling Fan Inop 93 Ford Taurus.
Chances are you have a bad IRCM which stands for integrated relay control module testing it requires a special tool found at the ford dealer or a ford wiring diagram...