Compressor HVAC: Description and Operation

A/C COMPRESSOR
Vehicles equipped with the 2.5L diesel, 3.3L and 3.8L gasoline engines use the Denso 10S20 A/C compressor. Vehicles equipped with the 2.4L gasoline engine use the Denso 10S17 A/C compressor. Both A/C compressors include an integral high pressure relief valve. The A/C compressor is secured to a mounting bracket on the 2.4L gasoline engine and directly to the cylinder block on the 2.5L diesel, 3.3L and 3.8L gasoline engines.

The A/C compressor is driven by the engine through an electric clutch, drive pulley and belt arrangement. The compressor is lubricated by refrigerant oil that is circulated throughout the refrigerant system with the refrigerant.

The compressor draws in low-pressure refrigerant vapor from the evaporator through its suction port. It then compresses the refrigerant into a
high-pressure, high-temperature refrigerant vapor. The compressor pumps the high-pressure refrigerant vapor to the condenser through the compressor discharge port.

The compressor cannot be repaired. If faulty or damaged, the entire compressor assembly must be replaced. The compressor clutch, pulley and clutch coil are available for service.