What are the reasons for the car air conditioning compressor clutch not engaging?
2 Answers
Reasons that may cause the car air conditioning compressor not to engage include: 1. Clutch: Issues with the compressor clutch. 2. Control circuit: Problems with the compressor control circuit. 3. Temperature control sensor: Damage to the car air conditioning system's temperature control sensor. 4. Refrigerant: Insufficient refrigerant in the compressor or lack of refrigerant. Below is an introduction to related content: Possible reasons for slightly low measured high pressure values: 1. Reason one: Insufficient refrigerant in the system, which should be replenished to the appropriate amount. 2. Reason two: Deformation of the high-pressure pipeline due to external forces causing blockage or blockage of the receiver-drier, with a noticeable temperature difference between the inlet and outlet of the receiver-drier.
The clutch of my car's air conditioning compressor didn't engage a few days ago, causing the cooling system to completely fail. There are several possible reasons for this, with electrical issues being the most common: if the fuse is blown, the current can't pass through; or if the relay is faulty, it can't transmit the signal. Wiring problems, such as loose connections, oxidation, or short circuits, can also interrupt the signal. Additionally, the pressure switch plays a critical role—when refrigerant leaks cause low pressure, it automatically prevents engagement to protect the system. Issues with the clutch itself are also common, such as an open circuit in the electromagnetic coil or jamming due to wear. Insufficient belt tension, while not affecting the electrical signal, can lead to related failures. I think the first step is to check the fuse box under the hood and try replacing the fuse; if that doesn’t work, it’s best to visit a professional shop to avoid causing further damage by tampering. Also, checking the refrigerant level before the peak summer season is important to prevent problems.
