What are the reasons for the Chevrolet Cavalier's air conditioning not cooling?

[DeBrooklyn]

There may be the following reasons for the Chevrolet Cavalier's air conditioning not cooling: 1. Refrigerant issues: The car's air conditioning system consists of multiple metal pipes with small gaps between them, leading to slight refrigerant leaks. Additionally, the dryer in the car's air conditioning system absorbs moisture and retains some refrigerant. When the refrigerant level drops to a certain point, the cooling capacity of the car's air conditioning decreases. In some models with dual-zone air conditioning, insufficient cooling may result in warm air blowing from the vents. 2. Excessive dirt in the compressor oil: This can clog the filter screen, reducing cooling efficiency, increasing resistance, and decreasing the flow of refrigerant to the expansion valve, leading to poor cooling. Sometimes, if air enters the air conditioning system, it can cause excessive pressure in the refrigerant lines, resulting in poor refrigerant circulation and insufficient cooling. 3. Problems with the dryer: Its main function is to absorb moisture from the refrigerant to prevent excessive moisture from reducing cooling capacity. When the desiccant in the dryer becomes saturated, it can no longer filter out moisture. As the refrigerant passes through the expansion valve's throttle orifice, the pressure and temperature drop, causing the moisture in the refrigerant to freeze in the small orifice. This can lead to restricted refrigerant flow, increased resistance, or complete blockage.