Why is the engine fan so noisy?

Hello, It would make sense for the engine in your vehicle to use a engine mounted cooling fan instead of an electric fan like normal. I wonder if the fan clutch or fan clutch controller is keeping the fan locked on all the time. If you look under the hood and see the fan is connected to the engine, try to turn it by hand with the key on and engine off. If it will not turn easily, it is seized or locked in direct drive. This will also cause poor fuel mileage and loss of power.