A fan clutch is a device that controls the speed of the engine cooling fan. It is located between the fan and the water pump, and it uses a viscous fluid to engage and disengage the fan. When the engine is cold, the fan clutch will be disengaged, and the fan will not turn. As the engine warms up, the fan clutch will engage, and the fan will begin to turn. This helps to keep the engine cool.
There are several signs that can indicate that your fan clutch is bad. These include:
