What Causes the High and Low Pressure of a Car's Air Conditioning to Be Equally High?

[DeEvangeline]

The reason for the high and low pressure of a car's air conditioning being equally high is insufficient refrigerant (Freon) in the AC lines or excessive addition of refrigerant oil, leading to a shortage of refrigerant. Here are the troubleshooting methods for car air conditioning: 1. Release excess refrigerant. 2. Replace the receiver-drier. 3. Perform a thorough vacuum and refill with refrigerant. 4. Clean or replace the condenser, and inspect the fan motor and its circuit. Compressor maintenance includes the following methods: 1. Check if the refrigerant is sufficient, measure the temperature difference between the inlet and outlet pipes of the drier, and inspect using a manifold pressure gauge. 2. Clean the air vents and remove dust and dirt inside the cabin. 3. Check if the refrigerant level in the AC system is normal. 4. Inspect the condition of the compressor belt.