temperature sensor is bad
If the AC or Defroster is on, many vehicles will also turn on the cooling fan.
HVAC fan? Engine cooling fan?
get in the car when it is cold, turn on the ac, then check under the hood. the fan that is not spinning when the car is cold is the cooling fan
When air conditioning or front defroster are turned on it will turn on A/C compressor which requires the A/C condensor to be cooled (via radiator fan).
the engine temperature has to get to 225 degrees Fahrenheit to turn on. If the engine is reaching 230 degrees and it is not turning on the sensor for the engine cooling fan is most likely the culprit. As for the fan operation of the fan with the a/c that is normal
Yes, because your engine is on.
If the question is about the motor fan or engine fan, the main function of this fan is cooling the radiator of the engine which in turn is cooling the water circulating inside the engine unto the radiator and back. This keeps the engine at a fairly operable temperature without overheating and damaging damaging its parts.
A thermostatic clutch is usually used on a car's engine cooling fan. It uses a bi-metallic spring, which tightens and forces the fan to turn when the air temperature inside the engine compartment reaches a certain level. Basically is used to prevent the fan from wasting your engine's power when there is no need for cooling, by allowing the fan to freewheel when the engine is cold. It then serves as a device to automatically engage the fan and keep the engine cool when necessary.
I believe it turns on and off the fan (1 out of 2) that cools the engine according to the temperature it's at. If it doesn't work the engine may not know to turn the fan on and the engine could overheat. Here's a tip. When you turn on your A/C or Heater, both fans come on. The A/C cooling fan and the Engine Cooling fan.
That is the fan cooling the liquid in the radiator to keep the engine from over heating.
No. The heater 'fan', more commonly known as the blower motor, is the one inside the vehicle cabin that pushes warm or cold air for the cabin heat or air conditioning. The cooling fan is the engine cooling fan under the hood.
Answermost likely it is the engine temp. sensor that tells the fan the motor is hot if it is going bad then it can make the fan run non stopI have the same problem in mazda6 2004 2.3l engine. If you have $100 you go to the dealer and get the update for compute unit, it is a bug in it. If you do not have money turn of the heater fan than engine is cold, as soon as engine warms up the fan will turn off.