The radiator fan starts when the engine gets too hot, for example in traffic queues in summer when there is no airflow. The fan takes 800 watts out of the battery. In modern vehicles, the engine controller regulates and monitors important engine functions.
How many amps does a car cooling fan pull?
Power draw: The more powerful a fan is, the more current it will draw from your vehicle’s electrical system. Twelve- to 16-inch fans can draw from 15 to 28 amps, while some dual fan applications can draw up to 35 amps. Make sure your electrical system can handle the addition of an electric fan.
How do you check the cooling fan on a BMW x3?
For a quick test of the fan, turn on your A/C, the fan should come on. If it does not, it may be faulty. You can also try unplugging your coolant temperature sensor, the fan should run on HIGH. Keep in mind with this technique, a fault code will be set and have to be cleared.
What are the symptoms of a faulty radiator fan?
- Engine Overheating. When the radiator fan isn’t functioning properly, it is not able to adequately cool down the car’s engine.
- Air Conditioner Function Diminished.
- Loud Noise Coming From Radiator Fan.
How much power does an engine fan use?
A single large mechanical fan is a slave to engine speed, and can consume as much as 40 horsepower from the engine using outdated technology.
How do I choose an electric radiator fan?
- Push vs Pull. Electrical fans can either push air through the radiator or pull air through it.
- Diameter.
- Single or Dual Fans.
- Straight Fan Blades and Curved Fan Blades.
- Fan Shroud.
- CFM – Max Airflow.
- Current Draw.
How much power does a 12V fan use?
A 12v rated fan can usually be powered with a 5v power supply, but it will spin at ~42% (5/12) of the rated speed. Some fans will not start up at all if voltage is too low–this is normally at 35% of the rated voltage.
How many amps does a 12V car fan draw?
A fan will typically use about 30-60 watts, which is about 1/4 – 1/2 of an amp.
How many volts should a cooling fan have?
However, voltages above the fans range could damage it. The standard electric outlet in the United States is 120V and will be able to directly power fans that have 120V within its range such as 110V, 115V, and 120V AC fans.
Should radiator fan turn on when AC is on?
Q: Should the radiator fan run when AC is on? Yes. Both the radiator and condenser cooling fan are expected to turn on the moment you switch on the air conditioning system. For instance, it is expected for the cooling fan to switch on when the engine carries loads or once it reaches the normal operating temperature.
What causes cooling fans not to come on?
Check the engine coolant level. If your engine coolant’s too low, it means that the cooling fan will have to work harder to keep the engine at a normal temperature. To check the level, look for the coolant expansion tank in the engine bay.
Why is my BMW fan running all the time?
Fan on All the Time If your cooling fan stays on regularly, it could be indicative of a problem with your cooling fan system. It could be a problem with the cooling fan relay and an internal short which causes the power to be turned on and running at all times.
How do you test a cooling fan?
That’s why, you will need to test it. Unplug the fan connector, closest to the fan. Make up some jumper cables. Then connect them directly, from the battery to the fan motor, to see if it spins.
Is a cooling fan the same as a radiator fan?
The cooling fan is also known as a radiator fan because it’s mounted directly to the radiator in some engine layout. Typically, the fan is positioned between the radiator and engine as it draws heat to the atmosphere. In front-wheel cars, the cooling fan used is an electrical component powered by the battery.
Is there a fuse for radiator fan?
But the most radiator fan fuse was located in the engine compartment fuse box while the radiator fan fuse can also be located under the vehicle instrument panel fuse box.
Are electric radiator fans better than mechanical fans?
Mainly, mechanical fans cause parasitic horsepower loss because your engine expends a certain amount of power spinning your fan. This translates into power loss at the rear wheels. That’s why electric fans are typically the number one choice for more highly modified vehicles.
Do electric fans increase horsepower?
We’ll jump right into the heart of the matter: An electric fan is the better performance solution, freeing up maximum horsepower and mpg.
How much horsepower does an alternator take away?
Just for a rough idea, a typical alternator output is 100 to 200 amperes, or 1200 to 2400 watts. That’s 1.6 to 3.2 horsepower. If the alternator were 100 percent efficient, it would use 1.6 to 3.2 horsepower, but, of course, they are not.
Is it better for a radiator fan to push or pull?
Both give an identical cooling performance. Push-pull gives you better performance than push or pull, but it costs more. If you can afford the extra fans, the push-pull configuration is worth it. But it’s typically better to spend the extra money on a larger or a thicker radiator.
How big of an electric fan do I need?
As a general rule of thumb, follow these minimum cubic feet per minute (cfm) ratings when using an electric fan as the primary cooling source on a basic engine: 1,250 cfm for a 4-cylinder. 2,000 cfm for a 6-cylinder. 2,500 cfm for a 8-cylinder.
What is the highest CFM radiator fan?
Super Duty Motor – Be Cool has the answer when you need the maximum airflow possible from a single 16″ electric fan. The Super Duty motor produces 3,140 cubic feet of airflow per minute (cfm) when mounted against a radiator core. This is the highest-rated CFM available from a through-the-radiator-core 16″ electric fan.
How long will a 12 volt battery run a fan?
Nominally, a 12 volt 100Ah battery has and energy capacity of 12 x 100 = 1200 Wh (watt hours). So nominally the fan would run for 1200/100 = 12 hours. However running a battery until it is exhausted is never a good idea, especially for lead acid.
How many watts does a 12 inch fan use?
Using an energy monitor, I put my 3 speed, 35W, 12″ standard table fan to the test. The actual wattage consumption was: 28.6W at max speed. 26.4W at medium speed.
How many watts does 12 volts equal?
Capacity – Watt-hour (Wh): Wh is calculated by multiplying the number of Amps with the battery voltage. For example, a 12V100 (a 12 volt battery with a capacity of 100Ah) has a capacity of 12 x 100 = 1200Wh.
How many amps does a fan use?
The majority of modern ceiling fans use less than an amp, averaging between 0.5 and 1 amp, depending on the model and the setting. One amp drawn by a ceiling fan is equivalent to about 120 watts. Low settings use less amperage while higher settings use more.