What Are the Reasons for a Car Not Cooling?
1 Answers
Introduction to the reasons why a car is not cooling: 1. Insufficient or low refrigerant: A common reason for a car's air conditioning not cooling is insufficient or low refrigerant, which may be caused by minor leaks. The solution is to add refrigerant. However, note that if adding from the low-pressure side, do not invert the refrigerant bottle; if adding from the high-pressure side, do not start the engine. 2. Loose drive belt of the car's air conditioning compressor: Car cooling relies on refrigerant, and refrigerant transmission depends on the air conditioning compressor, with the drive belt being a crucial moving part that drives the compressor. If the drive belt is loose, the compressor may slip during operation, leading to reduced transmission efficiency, decreased compressor speed, and reduced refrigerant delivery, resulting in the car's air conditioning not cooling. If the compressor drive belt is too loose, it should be tightened. If it cannot be turned by hand, it indicates the belt is too tight and should be loosened slightly. Of course, if tightening is ineffective or the belt shows cracks or aging damage, it should be replaced with a new one. 3. Unqualified refrigerant and refrigeration oil: Excessive impurities in the refrigerant and refrigeration oil can also clog the car air conditioning's filter, leading to no cooling. This increases resistance and reduces the refrigerant flow to the expansion valve, resulting in insufficient cooling. In this case, qualified refrigerant must be selected for repairs, as it plays a vital role in the car's air conditioning system. 4. Moisture infiltration in the refrigeration system: If moisture enters the car's air conditioning refrigeration system, causing insufficient or no cooling, the solution is to replace the desiccant or dryer in the car's air conditioning system. Additionally, the system should be vacuumed again, and a new, appropriate amount of refrigerant should be injected.
