Changes

The cooling fan runs on Low when the coolant temperature is over 100C, and High when over 113C. It also runs on Low to cool the condenser whenever the A/C compressor turns on. If the fan low speed fails, the condenser will overheat. The most common reason is a burned out fan resistor. In warm weather, the fan should run briefly after engine is shut off. If the fan never comes on after the engine is shut off, the low speed circuit may not be working.

If the fan resistor burns out, or if the low fan speed circuit fails for other reasons, the fan will continue to cycle on the high setting to cool the engine, but the coolant (and engine) temperature will run about 10-15 degrees C high. The fan may not run after the engine is shut off, and <U>will not come on to cool the condenser</U>. A/C will blow warm air or shut off completely at idle or in start/stop traffic. If the fan is not repaired and the condenser continues to overheat, refrigerant may start to leak, or the A/C compressor may fail.