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What are the reasons for Honda air conditioning not cooling?

3 Answers
DelAlex
08/26/25 3:27am
Honda air conditioning not cooling may be due to the following reasons: 1. Compressor belt or electromagnetic clutch slipping. 2. Poor sealing of the air conditioning compressor piston. 3. Condenser clogged with dirt. 4. Condenser cooling fan not working or rotating in reverse. 5. Faulty expansion valve. 6. Lack of refrigerant (commonly known as Freon). 7. Evaporator coil excessively dirty. 8. Fault in the car air conditioning air distribution system. 9. Excessively dirty air filter: This can cause the filter screen to become clogged, reducing cooling efficiency, increasing resistance, and decreasing the flow of refrigerant to the expansion valve, leading to the car air conditioning not cooling. 10. Faulty blower motor.
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SanIker
09/08/25 4:01am
I just dealt with a Honda AC issue last month. It's most likely a refrigerant leak, common in older cars. Check for oil stains around the pipe connections for clues. A loose compressor belt can also cause the AC to fail – pop the hood and listen for squealing noises. Another small detail is the cabin air filter. My cousin's Civic had a filter clogged like a carpet, blocking airflow and reducing cooling. The worst case is evaporator coil leakage, requiring dashboard removal – labor costs alone could buy half an AC unit. Recommend checking system pressure first; if below 200kPa, definitely locate the leak instead of just topping up refrigerant as a temporary fix.
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StChristopher
10/22/25 4:04am
My old Accord's air conditioning suddenly failed last summer. After some troubleshooting, I found out it was the cooling fan resistor that went bad. The fan wasn't spinning, causing the condenser to overheat, and the refrigerant couldn't cool down at all. I opened the fuse box myself and tested the relay - it clicked normally but the fan just wouldn't turn. Later, I spent 80 yuan to replace the resistor and it came back to life immediately. Also, pay attention to the compressor clutch. After starting the engine, press the AC button - if the clutch doesn't engage, it's an electrical issue. Don't ignore blower motor noises either, seized bearings can affect cooling performance too.
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