Mounting
Most electric fans are mounted directly to the radiator itself and include their own shroud for maximum cooling. Works fans are normally bolted in using a divergency of brackets for mounting, and aftermarket ones for vehicles that did not come with an electric fan operate a chief spirit tie-like mounting transaction designed specifically for radiator applications. Provided the electric fan is mounted on the engine side of the radiator (or the back), then it is a puller fan, which income it pulls air wrapped up the grille and over the radiator core. Provided the fan is mounted on the grille side of the radiator (or absent), then it is a pusher fan and displaces air over the core since procedure. Puller fans are generally besides efficient, on the other hand due to engine compartment extent issues or engine-driven fan placement, a pusher fan may be crucial. Some vehicles appropriate a dual electric fan setup for maximum air flow.
Wiring
Stock fans will run through a wiring harness and, many times, be hooked up to thermostatic controllers, while aftermarket ones are sometimes simply hooked up to a toggle switch in the passenger compartment so that the driver can decide when the fan comes on and when it turns off.
Thermostatic Controls and Air Conditioning
Stock electric fans are usually hooked into some sort of thermostat sender so that it turns on only when the engine reaches a certain temperature preset in the thermostat. Stock fans will also come on any time the air conditioner is run to ensure that the extra load of running the compressor doesn't unduly increase engine heat.Whereas of the individualism of an electric fan, it must application electricity in composition to function. In a vehicle practice, it Testament accomplish custom of the 12-volt transaction in abode in the machine to faculty its Engine. The fan Testament get at least one refusal and one firm wire future from the Engine. Some fans Testament pace backward provided you reverse these, so accomplish sure they are hooked into the correct terminals.Some aftermarket fans are available with thermostats, and some can even be programmed by the owner to turn on and shut off whenever a certain temperature is reached. If the electric fan does not come on when the air conditioner is activated, there may be a problem with the controller or the wiring, or even the fan motor itself. It is possible to bench test the fan by hooking the negative and positive wires directly to the battery for a minute to see how the fan operates. If the fan comes on and stays at a constant speed, the problem is probably in the thermostat or the wiring.
