[angrydan]

I literally just fixed this exact problem on my car today. My belts were just a little too loose. I read in a some thread here that being able to give them 1/4 of a turn is about the right tension.

In my case, the belts were brand new, and I think they may have just stretched out and broken in a little bit. Anyways, hopefully, the answer will be that simple for you!

There is a good how-to in the Alternator section that illustrates where the bolt is you need to tighten. Good luck!