Mishimoto 89-01 Jeep Cherokee XJ 4.0L Performance Aluminum Fan Shroud w/ ControllerCrawling up steep rock faces, muddy hills, or narrow trails can put a lot of stress on your 1989 2001 Jeep Cherokee XJ 4. 0L cooling system. The stock fan system on the 1989 2001 Jeep Cherokee XJ 4. 0L is an archaic design that's powered by the vehicle's engine. It adds a lot of weight and drag to the engine, sucking horsepower and torque just to get it moving. Once it does start moving, the amount of air it moves is dependent on the engine speed. If