When Does the Car Radiator Fan Turn On?
2 Answers
The radiator fan in a car operates based on the coolant temperature. Generally, the radiator fan starts working when the coolant temperature reaches around 80-90 degrees Celsius. Below is some relevant information about car radiators: 1. Classification: There are two main types of car radiators: aluminum and copper. The former is commonly used in passenger vehicles, while the latter is typically found in large commercial vehicles. 2. Malfunctions: When a radiator leaks, the hose connections are the most prone to cracks and leaks. In such cases, you can use scissors to cut off the damaged section and then reinsert the hose into the radiator inlet, securing it with a clamp or wire. If the crack is in the middle of the hose, you can wrap the leaking area with adhesive tape. Before wrapping, clean the hose thoroughly and ensure the leaking area is dry. Then, tightly wrap the tape around the leak. Since the water pressure inside the hose is high when the engine is running, it's important to wrap the tape as tightly as possible.
When encountering traffic jams or slow driving, the radiator fan is more likely to operate. The engine's cooling efficiency is poor at low RPM. Once the coolant temperature sensor detects that the coolant temperature reaches a critical value, typically around 95 degrees Celsius, the fan will automatically activate to assist with heat dissipation. During summer when idling with the air conditioning on, the heat generated by the AC condenser can also cause the fan to run continuously, which is a normal phenomenon. If the fan does not operate, it may indicate a faulty thermostat switch or a blown fuse, requiring inspection. Once during a long-distance mountain drive, while climbing uphill, the water temperature soared, and the sound of the fan spinning became the most pleasant music, safeguarding the engine.
