The fan clutch is basically the part of your vehicle's cooling system that powers up the fan blades. It has a sensor that detects temperature around the engine and if it becomes too hot, the clutch engages the fan in motion to produce air that cools down the heat. In essence, the clutch's task is to tell the fan when to turn and when to stop. A damaged fan clutch cannot do its job. There is a higher possibility for your car's engine to overheat if the fan clutch is not working well. To prevent this from happening, replace or fix a broken clutch as soon as possible. If you intend to get a replacement, you have two options to choose from: the non thermal and thermal.
Non-thermal fan clutch
This type of fan clutch is engaged with the water pump shaft. When the water pump shaft is spinning, the clutch also spins the fan.
- This type costs less than the standard thermal clutch. If you are on a tight budget, you can opt for this one.
- It performs well. A non-thermal clutch spins at around 30-60% of the water pump speed.
- It is less durable. You have to replace more often because it tends to wear out faster.
- It doesn't save on fuel. Since this clutch is always engaged to the engine, it uses up more energy.
Thermal fan clutch
This type works using a different mechanism. The clutch has a bi-metal thermostatic coil that measures the temperature around the engine. If the temperature is low, it disengages the fan from the water pump shaft so it won't turn. When the temperature is hot, it connects the fan to the water pump and lets the fan spin to cool the engine down.
- It controls the fan efficiently. It lets the fan spin only when needed.
- It provides better cooling application. When the engine is very hot, it lets the fan rotate really fast to take the heat away from the engine faster.
- It is more expensive. It is definitely a part you have to invest in.
- There is a possibility that it won't work that well without warm up. You have to make sure to rev up your car for about ten to fifteen minutes.