Ive have a fairly bad squeak from the engine compartment that is getting worse. It does it around town most opf the time but only on the highway when i turn the wheel a little. I replaced the serpentine belt and when I had it off I spun everything to see if I could get some noise. When I spun the alternator it made a slight squeaking sounds. I'm guessing the bearing mioght be going out??? Can anythign be done short of replacing it? It is charging fine.