What does the whirring noise sound like? Is it a faint sound that is proportional to RPM when the car is cold, or is the sound of the AIR pump that you are referring to.

As stated above, a new belt will should take care of the chirp. If your old belt has not been replaced in a while and is developing multiple small cracks accross the ribs, then it is time for a change. That can be changed easily and belt should be around $30, which can be ordered from fastlane at the top of the page.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record