The temperature sensor activate the fan. Unless it was hot wire by a back yard mechanic.
this is normal,because the coolant temp sensor is supposed to be in direct contact with the cooling fluid in order to read its temperature
Electric cooling fan? Fan placed behind radiator to aid in engine cooling activated when engine coolant temperature exceeds 235 degrees F or when A/C or defroster is engaged
Could be due to the fact that cooling fan is not working and excessive temperature is causing pressure rise.
Most cooling fans come on low speed around 150 to 180 degrees Fahrenheit. Unless, your running the air conditioner or the defroster. Turning on your air will also activate the cooling fan.
It's not supposed to be on. It comes on when engine reaches certain temperature. But if you see that temperature gauge is going in the red area you need to check the fan relay, its fuse, and the temperature sensor.
Newton's law of cooling applies to objects that are both heating and cooling. Newton's Law of Cooling states that the rate of change of the temperature of an object is proportional to the difference between its own temperature and the temperature of its surroundings.
evaporation Cooling is a decrease of the temperature of a system or material.
The cooling effect is from evaporation mainly. The fan moves an increased amount of air and speeds the evaporation from the skin or other moist surface. A fan blowing on a dry surface will have no cooling effect more than the average temperature of the air. Secondly, another cooling effect happens if the outer temperature is under 36C degree by pushing the hot (36C degree hot) air away from the surface over the surface of body and exchange it by a lower temperature one.
The cooling fan is supposed to keep running as long as the coolant is over temperature. If it runs too long, it could be the temperature sensor or a stuck relay. If the relay has become magnetized or fused, you need to replace it.
The cooling fan will run whenever the AC or Defroster is on. Beyond that, it will run whenever the sensor indicates that the temperature is above a set-point.
Cooling fan operation in determined by the Powertrain control module using inputs from the Coolant temperature sensor and A/C request signal from A/C system.
The cooling fan may be inoperable, either the fan clutch is bad or the electric cooling fan isn't working. Need to know what year, make and model vehicle you have to help you more.