If only the bearings are worn, they can be replaced. Parts are easily available at parts stores. However you would need tools to remove the pulley, something to hold or an impact wrench.
Without hearing the noise first hand it is a bit hard to say, is the noise constant with road speed or engine speed? Regardless I would be very wary about any purchase with a noise like this, it may be a very expensive fix, you must ask your self, why are there selling the car? Have they had this noise checked and want rid of the car to an unsuspecting person?
Saturday, January 15th, 2011 AT 2:31 PM