I checked everything that you mentioned be and after the last post and its still screeching. I tightened the belts a little, but not too much, preventing over tightening them. The screeching went away for the most part, but it still screeches when I put on my rear defrosters. I realize that the more electrical things that are on in a car, the alternator works harder and faster and the pulley wheel spins faster, so my conclusion was that there may be oil or grease on the belt or wheel. So, I removed the belts, cleaned the wheels, and belts, put them back on and the problem still persists. I'm thinking that this may be an impossible fix, even though this seems SO simple. I took my car to a professional mechanic and he said that it may be the bearings in on the wheel or the alternator, but I replaced those when I replaced the belts and the pulley wheels when I first got the car. A new alternator a possible fix.
Wednesday, January 14th, 2009 AT 8:24 AM