How does the car electronic fan keep turning？
There are a variety of possible reasons why automotive electronic fans keep turning, including:
Cooling system problems:
Insufficient coolant: The engine will overheat, resulting in continuous operation of the electronic fan, requiring timely replenishment of coolant.
Water tank leakage: will also cause engine overheating, need to repair or replace the water tank.
Thermostat failure: Thermostat failure may result in too little water supply and an increase in engine temperature, requiring the thermostat to be replaced.
Circuit or sensor failure:
Line fault: There is a problem with the circuit of the electronic fan and it needs to be repaired.
The water temperature sensor is damaged: The electronic fan keeps rotating, and the water temperature sensor needs to be replaced.
Other faults:
Heat sink fault: The external dust of the heat sink causes poor heat dissipation. You need to clean the dust.
Fan switch fault: The temperature control switch equipped with the electronic fan is damaged and needs to be repaired or replaced.
Relay fault: The fan relay contact is stuck and needs to be repaired.
Under normal circumstances:
In some cases, such as in the summer or when the engine is hot after operation, the water temperature inside the engine may still be high even if the vehicle is turned off. To protect the engine, the electronic fan will continue to run for a while to dissipate heat until the water temperature drops to a safe range. This situation is normal, and the general operation time is about one minute.
Other factors:
Air conditioning on: When the car air conditioning is on, the electronic fan will keep turning to help the air conditioning heat. When the air conditioner is turned off, the electronic fan usually stops working.
Water temperature is too high: If the water temperature of the car is too high, the electronic fan will continue to turn to reduce the water temperature. In this case, the driver should stop in time and take appropriate heat dissipation measures.
To sum up, automotive electronic fans may keep turning due to cooling system problems, circuit or sensor failures, other failures, or normal reactions under certain conditions. If the electronic fan continues to operate and does not meet the above conditions, it is recommended to check and repair it as soon as possible to avoid potential engine damage.
What are the three wires of the car electronic fan
The three wires of an automotive electronic fan usually include a power cord, a ground wire (negative wire), and a signal or control line. To be specific:
Power cord and ground wire: These two wires are the basic power supply lines of the electronic fan, where the power cord is responsible for providing power, and the ground wire (or negative wire) is responsible for forming a current loop to ensure that the current can flow normally.
Signal line or control line: This line is used to control the speed or switching state of the fan, according to the vehicle's temperature control system or other sensor signals to adjust the working state of the fan to achieve the best heat dissipation effect.
The setup of these lines ensures that the electronic fan automatically adjusts its operating mode according to the operating state of the vehicle and the external environment, thus protecting the engine and other critical components from overheating.
What will happen if the car electronic fan is broken
The broken car electronic fan will lead to a variety of phenomena, mainly including the engine water tank temperature rise, water tank burst water leakage, water circulation obstruction and engine cylinder. Here are the details:
Engine water tank temperature increase: The electronic fan is an important part of the cooling system, responsible for heat dissipation to keep the engine within normal temperature range. If the electronic fan does not work properly, it will cause the heat to be unable to dissipate effectively, thus increasing the temperature of the engine water tank.
Water tank burst water leakage: electronic fan damage may also lead to water tank burst, resulting in water leakage, so that the water circulation is blocked, and then affect the normal operation of the engine.
Water circulation obstruction: Water leakage and tank explosion will hinder the circulation of coolant, so that the engine can not be cooled enough, resulting in further increase in engine temperature.
Engine cylinder: If the electronic fan is seriously damaged, it may also lead to engine cylinder, and then cause engine damage. This is because the air enters the engine block, resulting in insufficient lubrication, which causes damage to the engine.
These phenomena may seriously affect the driving safety of the vehicle and the performance of the engine, so it should be checked and maintained in time.
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