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How does it Work?

With old technology on/off thermal switches, the engine coolant temperatures and pressures will rise and fall in cycles as the cooling fan cuts in and out. The thermal fan switch closes at high temperature to turn the fan on, and then opens again at lower temperature to turn the fan off again.

The AutoCooling controller constantly monitors the engine coolant temperature, and increases and decreases the fan speed to maintain a constant temperature rather than the cycle of hot and cold created by thermal switches.
This maintains a constant engine temperature, reducing "heat soak" created by the engine having to get hot enough to operate the thermal switch to cut in the cooling fan. This constant temperature is kinder to radiators, hoses, and gaskets, and helps maintain oil temperature and pressure at the correct level.
It is also kinder to the alternator/dynamo as the current spike will be lower since the fan is constantly spinning.   With old on/off controllers the current will spike high when the fan is turned on from a dead stop. On some cars you can hear the engine strain at idle when the thermostat turns on a radiator fan. This could lead to shorted diodes in the alternator, and a shortened life.

A switch to electric fans from belt driven mechanical fans will free up horsepower and improve fuel consumption as this load is removed from the engine. It will also give full cooling capacity at idle, something an engine driven fan cannot do.


Install Guide