My X5 has started making a strange squeaking noise when the car is running. When I start the X, I notice the sound coming from the area located by/between the fan/fan clutch/fan bolt/water pump pulley. After turning off the X, the sound will continue until the fan stops moving (5sec after X shuts down). I've just ordered ($48) the tool to remove the fan itself. Will the fan clutch make a squeaking noise when it goes bad? or does the pulley bearings go bad and make this sound. Or possibly the pump? I don't have much time to fix this problem...so I want to get it right the first time. Thanks!