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Why does the Envision's electric fan keep running?

3 Answers
CameronMarie
07/28/25 2:02pm
Envision's electric fan keeps running due to a damaged fan assembly. Methods to diagnose electric fan failure: First check the fault codes, then inspect the fan controller. Reasons for continuous electric fan operation: When the temperature gauge shows high readings (engine overheating), the AC electric fan will keep running. For automatic transmission vehicles, high transmission fluid temperature will also cause the electric fan to operate continuously. Working principle of electric fans: The car's electric fan is controlled by a thermostat. When coolant temperature rises to the upper limit, the thermostat activates power supply and the fan starts working. When temperature drops to the lower limit, the thermostat cuts power and the fan stops.
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Rich
08/11/25 6:35pm
I've encountered similar issues while driving, which are usually caused by minor problems in the vehicle's cooling system. It could be that the coolant temperature is too high, causing the fan to run continuously to cool it down, especially during long summer drives or in traffic jams. Check if the coolant level is normal - if it's low or of poor quality, it can easily lead to overheating. Another possibility is a faulty temperature sensor that misreads normal temperatures as high, causing the control module to incorrectly keep the fan running. Additionally, if the relay gets stuck and can't disengage, the fan circuit remains powered, which is another common failure point. You can try some simple troubleshooting: wait a few minutes after turning off the engine to see if it stops, or check if any fuses are blown. If it keeps running, take it to a professional shop immediately. Prolonged operation like this could burn out the motor or cause engine overheating damage, leading to more expensive repairs. Regular maintenance like radiator cleaning and sensor checks during scheduled services are good preventive measures. I recommend not delaying - safety first.
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DiLuke
09/29/25 2:53am
This issue is quite annoying; my car had the same problem last time. The fan keeps running mainly due to overheating signals. Check if the temperature gauge is too high—if so, the cooling system might be clogged or leaking. A faulty electronic fan control module or sensor could also send incorrect commands. If the air conditioning is on, sometimes the fan is forced to run to protect the condenser. Things you can try at home: check if the fan relay is stuck by unplugging and replugging it, or disconnect the battery for a few minutes to reset the system. If you can't identify the problem, take it to a mechanic for a diagnostic scan. Don't let the fan run for too long, as it can drain the battery and waste power—my car ended up needing expensive part replacements because I delayed fixing it. Regular maintenance like cleaning the radiator and topping up fluids can prevent many issues.
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