How long does it take for the fan to turn on when the car is idling in place?

[McAnna]

The fan starts running after the car idles in place for 10 minutes. Below is relevant information about car idling: The function of car idling: Idling is an operating condition of a car, referring to the engine running in neutral gear. The engine speed during idling is called the idle speed. The idle speed can be adjusted by modifying the throttle opening size, etc. Idling means the engine is "producing power without doing work." When the engine is running, if the accelerator pedal is completely released, the engine is in an idling state. Causes of unstable idling: Direct causes refer to mechanical parts being dirty, worn, or improperly installed, leading to changes in cylinder power, resulting in an imbalance of power among cylinders and causing unstable engine idling; Indirect causes refer to abnormalities in the engine's electronic control system, leading to poor combustion of the air-fuel mixture, making it difficult to balance the power among cylinders and causing unstable engine idling.