If a 1988 Lincoln Town Car is blowing both hot and cold air when the air conditioning is on, there could be a problem with the thermostat. There might also be a problem with the level of refrigerant in the air conditioning pump.
if car is blowing cold air, you need to check the thermostat,the heater core, and the heat control. the coolant will not blow cold air unless there is no coolant at all in engine,then you have bigger problem anyway
The substance that is blowing out of your air conditioner is likely not smoke, but fog (water vapor). If the surrounding air in the car is met by the cold air blowing from the vents, "fog" is produced. Meineke is a good car air conditioning repair shop.
Warm air contains more moisture than cold air. The air hits the cold window and the moisture is deposited on the cold glass. It is the same effect that causes your glass full of a cold beverage to start to drip down the sides.
If the fan is moving and blowing cold air, your cold air intake is working properly. So long as your car isn't overheating it's a safe bet that the intake is functioning properly. Quite simply your temperature gauge will head straight for the red if the engine isn't getting cold air.
Cold air is relative to your skin temperature. if your skin is 98.6*f, than 90*f air blowing over it will actually feel cool, albeit not very cold, even though when it is 90*f outside it is considered hot outside.