Why does the car air conditioner not cool when idling but cools when driving?
1 Answers
Reasons why the car air conditioner does not cool when idling but cools when driving: 1. Air conditioning compressor failure: The pressure between the air conditioning compressor and the expansion valve is less than 150kpa~200kpa, causing the refrigerant inside the system to not circulate normally, so the air conditioner does not cool when idling. 2. The condenser is too dirty: The condenser is used for heat exchange. If its surface is too dirty, excessive dust and dirt will make it less effective, naturally the air conditioner will not cool. 3. The air conditioning belt is loose or broken: A loose transmission belt will slip, accelerate wear, and fail to transmit power, resulting in insufficient power when idling, so it is not as cool.