What Causes a Car's Air Conditioning to Stop Cooling After Half an Hour of Use?

[McHazel]

Here are the reasons why a car's air conditioning stops cooling after half an hour of use: Internal Damage: Severe internal wear of the compressor, leading to its inability to function properly. Oil Contamination: Oil stains at connection points or seams indicate refrigerant leakage, necessitating re-tightening or replacement of the affected parts. Electrical System Malfunction: Electrical system failures are also a common cause of the car's air conditioning compressor not working properly. Check if the circuit is functioning smoothly, inspect the temperature sensor solenoid valve, and look for other potential faults. Low-Pressure Gauge Reading Significantly Below Normal: The surface temperature of the compressor's suction pipe is lower than normal, appearing damp and icy (commonly referred to as sweating).