Cooling Fan
How Radiator Cooling Fans Work
https://www.2carpros.com/articles/how-an-electric-cooling-fan-works
Cooling Fan Repair on Your Car
Symptoms of a Bad or Failing Cooling/Radiator Fan Motor
https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-cooling-radiator-fan-motor
If the fans do not come on, car overheats, and fuses blow, you may need to replace the cooling/radiator fan motor.
Troubleshoot Electric Cooling Fan
http://www.aa1car.com/library/electric_cooling_fan.htm
How to Fix a Car Fan
https://www.howacarworks.com/accessories/how-to-fix-a-car-fan
This article shows how to repair a car radiator fan, and how to check a thermostat switch and fan relay.
Common Radiator Fan Problems
http://www.doityourself.com/stry/5-common-radiator-fan-problems
The radiator fan does very important jobs: to cool the radiator and stop the car from overheating.