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What is the reason for the car air conditioner not cooling and then cooling again after restarting?

2 Answers

McMakayla

07/24/25 9:09pm

Car air conditioner not cooling and then cooling again after restarting is caused by: 1. Problems with the air conditioner's liquid storage and drying tank; 2. The compressor protection device tripping; 3. Radiator blockage. The solutions for the air conditioner not cooling and then cooling again after restarting are: 1. Replace the air conditioner's liquid storage and drying tank; 2. Secure the compressor protection device from tripping; 3. Clean the radiator. The functions of a car air conditioner are: 1. To cool, heat, ventilate, and purify the air inside the car; 2. To provide a comfortable environment for passengers, reduce driver fatigue, and improve driving safety. Maintenance methods for car air conditioners: 1. Clean the air conditioner vents promptly; 2. Maintain the air conditioner condenser in a timely manner; 3. Clean or replace the air conditioner filter element promptly.

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OGraham

08/10/25 2:32pm

Last time I encountered this issue, it was due to an aging relay. That small black relay in the air conditioning control box—its contacts can become unreliable after prolonged use, much like an old-fashioned switch that might only work three times out of ten presses. When you restart the car, it barely makes contact again, and the AC kicks in. Don’t underestimate this problem. Once, I was stuck on the highway in the middle of summer, and the AC kept cutting in and out—I nearly got heatstroke. My advice: head to an auto repair shop soon and spend a few bucks to replace the relay. While you’re at it, have the mechanic check if the circuit voltage is stable, as fluctuations can also cause the relay to act up.

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