It just does. I read that in a GMC manual. It's nothing to worry about. Ask O'bama, it's his company.
No. It is an electric fan with a thermostat.
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 sensor is located next to where the upper radiator hose attaches to the engine. The computer uses that sensor to decide when to actuate the radiator fan relays and turn the fans on.The engine temperature sensor is located next to where the upper radiator hose attaches to the engine. The computer uses that sensor to decide when to actuate the radiator fan relays and turn the fans on.
The fan should turn off after the engine is shut off. If it stays on, the radiator fan relay has failed.
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.
unplug the coolant sensor and turn on the ignition without starting the engine. The fan will run.
That is the fan cooling the liquid in the radiator to keep the engine from over heating.
Usually ECT or engine coolant temp sensor. That's what tells the engine computer to turn on the fans.
yes
temperature sensor is bad
Yes, when the a/c is used the engine works harder which rises the temp of the engine then turn the fans on to cool the radiator.
radiator fan is supposed to turn on before over heating to draw more air thru radiator and over engine to assist with cooling if fan is not turning on soon enuff , you need a new lower temp fan switch