Ok under the hood I have this loud chirping noise and it sounds like a pump bearing but I can't find it for sure because of the motor noise, the car has a new alternator, water pump, and PS pump but the ac pump has had leaking problems and it sounds like its coming from there but I cant tell. I know its coming from the front of the motor but its hard to tell, is there any info you guys can give me without having to pull the belts one by one? I need to change the timing belt and probably the tensioner so that might be it also but I don't know. Thanks guys.

PS it also sort of goes away when I rev the motor from under the hood if that helps.