It doesn't really sound like a hair dryer. It only does it when I am at a high speed 60 and above. It doesn't make sounds when I start it up or sounds louder at different times. There is no continious hum except when I am at a higher speed. I guess I might have to run it to the Dealership, but argggg they will charge 100.00 which I really don't have at the moment. I was saving up for the timingbelt replacement which will come up soon enough.