The fan system works by forcing air flow through the radiator. Its function is to facilitate and support the engine's temperature management .
What are the functions of cooling fan?
The primary function of a radiator cooling fan is to take away excessive heat absorbed from the engine . The coolant absorbs the heat and goes into the radiator where the heat is blown away. The system is functional when the engine is stationary, where air can't move through the grille.
How does an engine cooling fan work?
How Does A Radiator Fan Work? ... A mechanical fan is connected to the engine directly by drive pulleys . This type of radiator fan is controlled by a thermal fan clutch that senses radiator heat. After sensing the heat temperature, the radiator fan turns on when the engine is running at a higher temperature.
What is the function of radiator fan in car?
The function of a radiator fan
The radiator fan has an important job in the engine compartment. It helps to regulate the engine temperature by pull (or push) air through the radiator core . During normal operation, the forward motion of a vehicle forces air into the front grill and through the radiator.
When should engine cooling fan come on?
Most fans should come on when the coolant reaches about 200 to 230 degrees . If the fan does not come on, something in the control circuit is defective.
What is the function of starting fan?
This is an important part of the fan that makes it work properly. The capacitor is used not only to start the fan but also to make it spin. In simple words, the capacitor creates a magnetic flux (torque) which makes the fan rotate.
What are 10 common causes of overheating?
- Too little or no coolant. Driving without proper levels of coolant/antifreeze may cause a coolant system failure. ...
- Cooling system leaks. ...
- A broken water pump. ...
- Radiator issues. ...
- Oil too low. ...
- Thermostat failure. ...
- Issues with the belts and hoses. ...
- Heater core is plugged up.
Should radiator fan turn on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches about 200 to 230 degrees .
Does the thermostat turn on the radiator fan?
How Does the Thermostat Affect the Fan? The thermostat in the cooling system controls many of the electric fans. When the temperature in the engine reaches a certain preset temperature, the fan will begin cooling the engine. When the temperature dips below that preset temperature, the fan will turn off .
What tells the cooling fan to come on?
The engine temperature should trigger the fan to turn on . It will also turn the fan off once the engine has cooled to under 200 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. This is linked to a thermostat and works much like your home's HVAC system.
Is the radiator fan the same as the cooling fan?
The radiator fan (or fans) pulls cooling air through the car's radiator . The advent of electric cooling fans, which turn on and off as needed, proved an improvement over engine-driven fans that slow down exactly when they're needed most. ... A failed cooling fan can result in an engine overheating.
What is the difference between condenser fan and radiator fan?
On some vehicles, for example, only the condenser fan operates with the air conditioner , while only the radiator fan operates based on engine temperature. On other vehicles, both fans can be activated by either air conditioning or engine temperature.
Does the radiator fan affect the AC?
A lousy radiator fan can create car air-condition (AC) issues. ... The radiator fan pulls air through the condenser, which removes the heat vapor of the refrigerant inside. If the radiator fan fails, it will affect the AC performance .
Why does my radiator fan not turn off?
Look on the inside of the lid and for the mapping of the fuses and relays with their location. Pull the cooling fan relay out of the box . Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off.
What are the symptoms of a bad thermostat?
- Leakage from the mounting surface. Appearance: Seepage, drips or large coolant bleed marks on or around the mounting surface or on the housing. ...
- Rust and corrosion. Appearance: Rust and corrosion on the surfaces of the thermostat. ...
- Deposit build-up. ...
- Map-controlled thermostats.
Why does my radiator fan not turn on?
If the fan doesn't come on, you need to look for a blown fuse or breaker . In older cars, you might have a fusible link – this is wire within an insulated block of rubber. Try to grab the end and stretch it. If the wire stretches, the wire link could be broken and you'll need to replace it.
