They said they checked the AC, the belt, and basically everything under the hood, but everything was in tact. That's a good suggestion about taking it to another dealer and also putting belt oil. They noticed that sometimes it made the noise on acceleration, like you said rpeterslll (which I didn’t notice before). I've called Ford's 1-800 number and registered the complaint with them. They said I was one of the first, and they haven't heard that complaint before. I don’t know if I'm just lucky number one, or no one else has called. The service manager told me if the noise becomes louder and more persistent to bring it back. It kind of sounds like bologna to me b/c the problem will still be there until they fix it. Until then, I've got my Fusion back.