The method to judge the quality of automobile compressors is very simple. Just follow the steps below to check:

Step 1: Start the engine and keep the speed at 1250-1500 rpm for 1 minute. Connect the manifold pressure gauge assembly to the air conditioning refrigeration system, turn on the air conditioning switch, and turn the fan to the Max position.

Step 2: Touch the air inlet and outlet of the compressor. Generally, the air inlet is cold and the air outlet is hot, and the temperature difference between the two is large. If the temperature difference between the two is small, then look at the manifold pressure gauge.

Step 3: If the pressure gauge shows that the high and low pressure difference is very small, the compressor is not working properly and should be removed for repair. If the compressor is very hot, check the manifold pressure gauge. The pressure gauge shows that the pressure on the low-pressure side is too high and the pressure on the high-pressure side is too low, indicating that the internal sealing of the system is poor and the compressor should be replaced. If the high and low pressures of the refrigeration system are too low, it means that there is too little refrigerant in the system and a leak test should be performed. If the compressor leaks, it should be replaced or repaired. The above is a simple way to judge whether the automobile compressor is good or bad. Just follow the above steps to check. Note: If you find any problem with the compressor, you should repair or replace it in time to ensure the normal operation of the car air conditioner.