Chirping typically is from the driver belts. Whether from the stretch-to-fit drive a/c compressor belt to the serpentine belt. Several things can cause chirping: Contaminated belts from oil leaking onto them (or coolant), road debri like very small rock impeded in the belt causing a squeak or chirp when slipping on one the ribbed pulleys, one or more the of the pulley bearings and belt tension can all cause a noise concern.
Does the chirping happen with the a/c or defrost on only? If not, I would suspect the serpentine belt. But if it happens only with the a/c or front defrost on I would suspect the stretch-to-fit belt or a/c compressor clutch.
If you narrowed it down to one of the belts you can spray some water from a squirt bottle onto the belt to see if the chirp goes away if it does then you know its the belt if it does not it may be your a/c compressor clutch. Let me know what you find or if you have any more questions, TY
Monday, September 16th, 2013 AT 5:40 PM