and thatIts got bad aids :dead:
because its speeding up and slowing down,, speeds up when it gets too hot slows down when it cools down
assuming it is just the sound of the fan on fast speed, then all i can suggest is councelling if you are embarresed by it..
suppose you could video it just incase it is a dodgey noise
i'll have a gander the weekend
any fan that you put in an enclosed housing and spin at those sort of speeds is going to be loud
you should hear bmw's with the electronic viscous fans on them when they cut in you cant even hear the engine over it