What controls an electric engine cooling fan?
The PCM controls fan operation; it uses the signal from the ECT or engine coolant temperature sensor. This sensor senses the temperature of the engine’s coolant and sends a variable voltage signal to the PCM. The PCM operates the fan motor through the engine’s cooling fan relay.
Why do cars have two radiator fans?
The cooling fan in the engine compartment should turn on to pull air through the radiator and A/C condenser. On many vehicles, there may be two fans: a main cooling fan for the radiator, and a second fan for the condenser. Both fans should come on when the A/C is on. The engine may also run hot and overheat, too.
Do electric fans need a relay?
Most parts stores carry toggle switches and/or push-pull switches that will handle anywhere from 30-60 amps, so that would work. If you’re using one of those thermostatically-controlled deals (or a low amp rated manual switch) you should use a relay.
What is a fan override?
The fan override option allows you to turn on the cooling fan during extreme riding conditions. This assembly will also allow the user to let the fan run on it’s normal cycle when the switch is in the center position and you will also be able to turn the fan off with the switch in the bottom position.
Can a car overheat without a fan?
Yes, technically your engine does not need a cooling fan to operate. If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
Do you need a fan clutch?
This coupler is called the Fan Clutch. Flex Fans do not need a clutch. At high rpm, the blades “flatten out.” This achieves the same function as disengaging the fan.
How does an electric radiator fan work in a car?
If you’re rusty or new to this automotive element, here’s a short rundown of how radiator fans work. Electric radiator fans operate when radiator temperature rises to preset heat range. When the radiator temperature lowers to a preset level, the electric fan turns off.
Can a dual cooling fan be added to a car?
The one drawback to adding more electrical components to your vehicle is that often times the original alternator was not designed to handle current draws over 45-60 amps, so as you add a single or dual electric cooling fan, consideration should be made to increase the output of your charging system with a beefier alternator.
What’s the best way to control an electric fan?
Grey wire is connected to the thermostat (sending unit) terminal with the blue ring crimp connector provided. Depending on the model, the thermostat (sending unit) triggers the fan on at 185°F. and off at 165°F. or on at 195°F. and off at 175°F. A toggle switch can be wired into the system to manually override the cycling of the fan.
Do you need a relay kit for a cooling fan?
A relay kit, our part number CCFKRL, will include everything you need to properly wire up your electric cooling fans, with the exception of additional wiring needed to complete all of the circuits. The first part of the installation is to install the electric fan to your radiator, and remove the mechanical fan.