How to Fix the Air Conditioning Not Cooling in the 10th Generation Civic?

2 Answers
ElenaFitz
07/24/25 5:43pm
The solutions for the air conditioning not cooling in the 10th Generation Civic are as follows: 1. Insufficient refrigerant: A common reason for the car air conditioning not cooling is insufficient or low refrigerant, likely due to minor leaks. If the refrigerant is insufficient or low, the solution is to add refrigerant. However, note that if adding from the low-pressure side, do not invert the refrigerant bottle; if adding from the high-pressure side, do not start the engine. 2. Excessive refrigerant: Too much refrigerant can also cause the air conditioning not to cool. There is a required proportion of refrigerant volume in the air conditioning system. If the proportion is too high, it can affect heat dissipation. If the pressurized cooling oil is excessive, you may see cloudy bubbles in the sight glass during normal operation. If the refrigerant is indeed excessive, you can slowly release some from the low-pressure side maintenance port of the air conditioning system.
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OJohn
08/11/25 9:48am
Last time I drove my 10th-gen Civic, I noticed the AC wasn’t cooling at all—so frustrating! At first, I thought it might be a refrigerant leak, since older cars often have that issue. I turned off the engine and checked the cabin air filter—sure enough, it was filthy, completely clogged with dust. After replacing it, things improved a lot. If the filter isn’t the problem, you should check the refrigerant level. You can buy a pressure gauge to test it yourself; if it’s below the standard value, you’ll need a refill. If the compressor is failing, it’ll make a loud humming noise while driving. I make sure to clean the AC vents monthly and run the system regularly to keep it lubricated, not just when it’s hot outside. If all else fails, take it to a professional shop—let a mechanic check the condenser or wiring for shorts. Don’t push it too hard, or you might fry the electrical system. Spending a bit more for peace of mind is worth it.
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