Table of Contents
How many radiator fans do I need?
Most of the time a single fan is all you need but if you have added a much larger engine or are making big horsepower, then you may want dual fans to maximize the amount of airflow.
How often should radiator fans come on?
How often should radiator fan come on? Most fans should come on when the coolant reaches about 200 to 230 degrees. An electric fan SHOULD NOT run all the time. A mechanical fan WILL spin as long as the engine is running, but it will only ‘lock up’ when needed.
How many speeds does a radiator fan have?
This is dependent on vehicle and cooling stack thickness, but generally, electric radiator fans are only needed up to 20-30MPH road speed. What can influence this is grill opening, cooling stack thickness, outlet ducting, and the fan’s characteristics.
Is push or pull better for radiator?
A Push configuration is more efficient in cooling when its blowing cool(er) air from outside the plenum through a radiator. A Push also makes your build louder. In Pull configuration the fan or fans are drawing an air stream out of the radiator.
Can you drive with a bad radiator fan?
Can you drive with a bad radiator fan? Yes, if your radiator cooling fan fails, you can drive with it. Technically, your vehicle engine does not need a radiator fan to operate. However, if your vehicle engine does not receive enough air blowing it constantly, it will eventually lead to overheating.
Why is my radiator fan so loud?
One such problematic issue, the excessively loud radiator cooling fan, is a common plague many automobile owners will experience. Your radiator fan should be audible. Worn bearings, bent or broken blades, and unbalanced rotating assemblies can cause a fan to screech, howl, or otherwise make noises it shouldn’t.
Do radiator fans have 2 speeds?
Yes the fan will increase with speed when the AC is on. A lot of fans today are PWM (Pulse Width Modulated). This means there is no one/two speed fan.
What controls the radiator fan speed?
In addition to the power, ground, and tach signal, 4-wire fans have a PWM input, which is used to control the speed of the fan.
Should both radiator fans be 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.