My vehicle makes a rattling noise when idling. And the belt is squeaking. Both only happen when the air conditioning is on.
Based upon the information provided, an inspection of the drive belt and air conditioning system should be performed. The squealing noise indicates your drive belt is under strain. If the belt breaks, you will not be able to drive your vehicle and may become stranded. A qualified technician, such as one from YourMechanic can assist you in diagnosis and repair.
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