What Causes Normal High and Low Pressure in Car AC but No Cooling?

1 Answers
OJoshua
07/30/25 9:27am
Car AC with normal high and low pressure but no cooling may be caused by the following reasons: 1. Condenser issues: The condenser is often overlooked. After prolonged driving, dust accumulates on the condenser. Excessive dust reduces heat dissipation efficiency, leading to poor cooling performance. 2. Expansion valve blockage: A failed dryer (receiver-drier) may allow dirt or metal particles from compressor wear to enter and clog the expansion valve. It is recommended to replace the expansion valve and dryer, and perform a no-disassembly cleaning of the AC system pipelines.
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