1、 How to check whether there is a problem with the car radiator? If there is a problem with your car's radiator, you can test the cooling fan with an engine diagnostic tool. If everything is fine, you need to check to see if the thermostat is malfunctioning.
Problem 2: After the car is turned off, the cooling fan starts up frequently. In most cases, this is normal behavior. Because when the car is turned off, the cooling system will stop working normally. At this time, the temperature of the engine has not cooled down. Therefore, the cooling fan will continue to work for a period of time, and it will naturally stop working after the engine temperature drops.
Problem 4: Abnormal noise from the fan If you hear abnormal noise when the fan is working normally, there are four reasons:1). The fan casing is worn; 2). The fan bearing may be damaged; 3). The fan blades are deformed; 4). Foreign matter has entered the fan. In the above four cases, the first three cases need to replace the relevant parts, and the last case only needs to clean the foreign matter. 2、 What is the function of a car radiator? The main function of the cooling system is to dissipate heat into the air to keep the engine from overheating, but the cooling system also has other important functions. The main function of the cooling system is to dissipate heat into the air to keep the engine from overheating, but the cooling system also has other important functions. To avoid overheating of the engine, the parts around the combustion chamber (cylinder liner, cylinder head, valves, etc..) must be properly cooled. In order to ensure the cooling effect, the car cooling system generally consists of radiators, thermostats, water pumps, cylinder water channels, cylinder head water channels, fans, etc. The radiator is responsible for cooling the circulating water. Most of its water pipes and cooling fins are aluminum. The aluminum water pipe is flat and the fins are corrugated. Pay attention to thermal performance. The installation direction is perpendicular to the airflow direction. Make the wind resistance as small as possible, and the cooling efficiency is high. Coolant flows into the radiator core and air flows out of the radiator core. Hot coolant cools by dissipating heat to the air, while cold air heats by absorbing the heat dissipated by the coolant, so a radiator is a heat exchanger. Car radiators are generally divided into water-cooled and air-cooled. The heat dissipation of the air-cooled engine relies on the circulation of the air to take away the heat, so as to achieve the effect of heat dissipation. The outside of the cylinder block of the air-cooled engine is designed and manufactured into a dense sheet structure, which increases the heat dissipation area and meets the heat dissipation requirements of the engine. Compared with water-cooled engines, air-cooled engines have the advantages of light weight and convenient maintenance.