Just replaced the fan clutch and waterpump but still have an "occasional" "roaring" sound depending on how the accelerator is being pressed. If you are light on the throttle then there does not seem to be a problem but if you hit it hard it starts to lock on up to 30-40 mph. I have read all the other fan clutch threads and that's what made me get the clutch. It seemed to work for a day or two but now it is intermitent rather than all the time. Could it be the sensor? Does anyone have the instructions for replacing the sensor? I read the Haynes manual and it is not to discriptive. Thanks for any help you can give.