I got some food @ Arby's and parked in some lot waiting for a friend to arrive, i kept the engine running while i watched a dvd with some nice air conditioning. About 3 or 4 minutes into my wait I hear a fairly loud whistling noise comming from under the hood, I popped the hood and tried to locate where the whistle was comming from. I think it's the fan, but i'm not sure. Anything like this ever happened to anyone else?

 

Probably the idler pulleys for the blower belt....