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What are the methods for repairing a car air conditioner that is not cooling?

2 Answers

DiKendra

07/28/25 7:03pm

Car air conditioner not cooling repair methods are: 1. Add air conditioner refrigerant; 2. Check the pipelines in the car air conditioning system and whether the air conditioning pump components are damaged; 3. Use a high-pressure water gun to clean the condenser's heat dissipation fins, then dry them with a high-pressure air gun. The reasons for a car air conditioner not cooling are: 1. Lack of refrigerant, insufficient refrigerant in the air conditioning system pipelines, leading to reduced pressure; 2. Long-term lack of maintenance, clogged air filter and condenser; 3. Air conditioning compressor failure; 4. Loose drive belt of the air conditioning compressor, causing reduced compressor speed; 5. Poor remote control or poor air conditioner receiver; 6. Four-way valve or compressor high and low pressure cross-leakage, rendering the air conditioner ineffective.

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DiAlexa

08/12/25 12:21am

I've encountered the issue of car AC suddenly not cooling several times. Last month during a long drive, the car was as hot as a steamer. After checking, it turned out the refrigerant was gone, possibly due to a leak from a crack in the pipeline. First, do a DIY check: start the engine, turn the AC to max, and feel the air vent for cold air. Then, see if the fan in the engine bay is spinning—if it's not, it's likely broken. Loose wire connections can also cause malfunctions. If the refrigerant is low, you can buy a refill canister and top it up yourself, but be careful not to overfill. For serious leaks, a repair shop will use a pressure gauge to locate and fix the leak before refilling with new refrigerant. Compressor issues are more complicated and require professional replacement. It's recommended to do annual AC maintenance every spring, like cleaning the filter and condenser, and check before summer driving to prevent issues—comfortable and cost-effective. No cooling on hot days affects driving safety, making people drowsy, so the sooner you fix it, the better for peace of mind.

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