well, my new powersteering pump started acting up on me the other day (they are going to replace it free of charge - wish they could give me my time back too.) along with the pump acting wierd, the belt squeals on acceleration. i made sure the belt is tight, and so i've been thinking about why it's squealing. it only squeals during large, quick changes in engine speed (ie starting from a stop, or downshifting into 2nd). could it be that the pump shaft has some sort of friction/load on it, such that when the engine speed changes quickly, it pulls the belt fast, but the pump resists the belt and thereby the belt squeals until the pump starts spinning at the proper speed?