If you are not experienced servicing auto air conditioners, take your car to a mechanic. Way too complicated for this type of forum. You MIGHT need a charge of coolant, possibly the control switch went bad, the drive belt broke so the engine can't run the unit but the solenoid is kicking in and out in attempts, or......??
SOURCE: when i turn my air conditioning on i here a loud squenching noise what could it be
Loose belt or bad ac clutch tighten belt firsy
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