What is the reason why the car air conditioner is not cold at idle and cold when refueling?

The idle speed of automobile air conditioner is not cold, and the reason for refueling and cooling may be belt slipping or air conditioner compressor damage. The following is the introduction of automobile air conditioning knowledge: 1. Definition: Automobile air conditioning device is called automobile air conditioning for short. It is used to control the temperature, humidity, air cleanliness and air flow in the carriage in the best state, to provide passengers with a comfortable riding environment and reduce travel fatigue; A ventilation device that creates good working conditions for drivers and plays an important role in ensuring safe driving. 2. Type of air conditioner: According to the driving mode, it can be divided into: independent (compressor driven by special engine has large refrigeration capacity, stable operation but high cost, and its volume and weight are mostly used for large and medium-sized buses) and non-independent (air conditioner compressor is driven by automobile engine, and its refrigeration performance is greatly affected by engine operation, and its poor stability is mostly used for small buses and cars).