Expansion valves regulate the flow of refrigerant. When they start to fail, they can create frost on the vents or the AC compressor, blow warm air or constantly run the AC compressor. Sold Indi...
A severely worn A/C belt will no longer be able to grip the pulleys and will start to slip and cause a loud squealing noise when the A/C is turned on. Belts undergo a lot of friction and wear. ...