What is the reason for the Magotan's electric fan running continuously when starting the car?
2 Answers
Magotan's electric fan running continuously when starting the car is due to a faulty fan module, which can be resolved by replacement. Engines generally use internal combustion, where thermal energy generated by combustion is used to perform work. However, the effective power is only 30%-40% of the total energy available from the fuel, with the remaining energy lost as exhaust heat loss and mechanical friction heat loss. Especially to maintain the appropriate temperature of the cylinder, cylinder head, and intake/exhaust valves. The following are the reasons why the radiator fan keeps running: 1. Engine overheating caused by insufficient coolant: Electric fan runs continuously; 2. Engine overheating caused by radiator leakage: Loose or damaged hoses causing leaks, leading to the electric fan running continuously; 3. Thermostat failure: Due to the thermostat, the temperature reaches the baseline but cannot send water to the radiator, or the water sent is insufficient, causing engine overheating and continuous operation of the electric fan.
Last time when I drove my Magotan to pick up my kid from school, I encountered this situation—the fan kept running loudly after the engine was turned off, which scared me thinking the car might catch fire. Later, the mechanic told me it was most likely the thermostat getting stuck. When it's stuck in the closed position, the coolant doesn't circulate, and the computer will make the fan spin wildly to cool down. Also, you need to check the antifreeze—if it's below the MIN line or there are air bubbles in the radiator, the temperature sensor might misread it as overheating. The worst case is when the fan control module fails. My neighbor’s car had a short circuit in the module, causing the fan to run nonstop. Don’t force the car to drive in such a condition. Last time, I foolishly waited for half an hour until the fan stopped, and the next day the battery was dead.
