Why is the car's cooling not working well?
2 Answers
There are several reasons for poor cooling performance of a car's air conditioning system: 1. Refrigerant leakage leading to insufficient pipeline pressure: During AC operation, refrigerant undergoes continuous chemical changes. Deteriorated refrigerant gradually corrodes various AC components such as seal rings and rubber hoses, resulting in refrigerant and compressor oil leaks. 2. Reduced condenser heat dissipation capacity: Prolonged driving leads to accumulation of oil, dirt or debris on the condenser surface, impairing its heat dissipation. Additionally, cooling fan malfunctions or loose drive belts can also reduce condenser efficiency. 3. Blocked air ducts or dirty AC pipelines: Set the blower to maximum speed and check airflow at the vents with your hand. If airflow is significantly weaker than before, air duct blockage is likely. 4. Extended use of external circulation: Running AC while keeping external circulation on draws hot outside air into the cabin, naturally reducing cooling effectiveness. During hot weather, switch back to internal circulation promptly after ventilation.
I've been working with cars for decades, and the most common issue with poor air conditioning cooling is insufficient refrigerant, just like when the liquid has all leaked out, making it feel not cool enough. If the compressor malfunctions and doesn't operate properly, it can also cause this. A condenser clogged with dust leads to poor heat dissipation, and a dirty air filter can obstruct airflow. Back when I was repairing cars, customers often complained about sweating in the summer heat while driving. Checking for leaks or replacing the air filter usually solved the problem. Regular maintenance of the air conditioning system is crucial—otherwise, long drives can become unbearable. Safety comes first, so it's best to get it handled by a professional shop promptly.
