The fan is switched on and off by means of a thermostatic sensor switch fitted to the cooling system . When the temperature of the coolant rises to a certain point, the sensor switches on the fan. The fan then operates until the temperature falls below the critical point, when the sensor switches off the fan.
What does an electric fan do in a car?
The radiator fan (or fans) pulls cooling air through the car’s radiator. Positioned between the radiator and engine, cooling fans are particularly helpful when the car is stationary or moving at speeds too slow to force air through the grille.
How does a cooling fan work?
The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. This air flow removes heat from the coolant created by the engine using the radiator as a conductor. … Engine cooling fans are temperature controlled to only run when needed.
When should the cooling fan come on?
about 200 to 230 degrees
Does an electric fan increase horsepower?
The mechanical to electrical conversion in the alternator to drive the electric fan is not 100% efficient, so the engine will have to make slightly more power to provide the electric fan the same horsepower.
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.
Can you drive a car without a radiator fan?
Yes, technically your engine does not need a cooling fan to operate. … If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
Do both radiator fans turn on at the same time?
Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
Is there a fan that blows cold air?
Regular fans don’t blow cold air. It basically just blows air that’s already in the room but the movement of air makes you feel colder. Aside from an air conditioner, the only other unit that blows cold air is an evaportive cooler. Here are some of the best ones you can buy online .
What controls the radiator fan?
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.
How can you tell if a fan relay is bad?
One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
Is car fan supposed to run constantly?
It can be normal for the cooling fans to run constantly under certain conditions. If the car is hot enough, they may be barely keeping up with demand and stay on. Also, most cars will run the fans at a high speed if the A/C is turned on.
Does the coolant temp sensor control the fan?
The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. … As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on.
Is an electric fan better than a clutch fan?
The clutch fan draws power from the engine due to the added load…. The electric fan saves power due to no load on the engine…. Clutch fans are better because they only apply a load at idle or low speed and don’t require wiring… Electric fans save power but add weight and require a lot of wiring…
Are electric fans worth it?
Although they will place an additional draw on the electrical system, they are a more efficient alternative to mechanical fans and don’t cause the dreaded parasitic horsepower loss. Here are a few other advantages of electric fans: Consistent cooling—they maintain their airflow at all times. Reduced water pump wear.
What is better clutch fan or electric fan?
When compared to an electric fan, fan clutches are quite inefficient. … The benefits of a Thermatic Fan lay in its ability to provide constant air flow, improved fuel economy, better air-conditioning performance, cooler engine running and increased engine power.