Which way should a radiator fan go?

The fan should blow air toward the engine (i.e., same direction as the air flow when the vehicle is in motion). If the fan is not OEM, the air volume may be off and the electrical characteristics could be different.

How do you tell if a fan is pushing or pulling?

If there are no arrows, then you can tell by the sticker on the center of the fan. The one with the company logo on it is usually on the side that the air is flowing to. For example, if the fan is on the top of the case and the logo is facing up, then it is pulling air out of the case.

How much horsepower does an electric fan add?

In contrast, the use of electric fans allow for fan reversal, which keep the heat exchangers clean while cooling with much lower power needed than the mechanical fan. In a normal pickup situation, even in high ambient temperatures, the electric fan system will only draw a maximum of about 5 horsepower from the engine.

Are electric radiator fans better than mechanical fans?

As the name suggests, electric fans are powered by your vehicle’s electrical system. 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.

Are electric radiator fans worth it?

A key advantage of electric fans is increased engine cooling and improved air conditioning cooling at idle, when it is most needed. In addition, replacing an engine-driven fan can increase horsepower and improve fuel economy as the engine drag from turning the fan is eliminated.

How much horsepower does a flex fan take?

I’m sure a flex fan takes 5-10 horse but some large electric fans can pull 30 amps. Might be a horse or two just to make that. For the money you can’t go wrong with a standard thermal coupled mechanical fan and a proper shroud.

What temperature does a fan clutch engage?

about 170°F

How do I know if my fan clutch is going out?

Symptoms of a Bad or Failing Fan Clutch

Vehicle overheating. One of the first symptoms that is commonly associated with a bad or failing fan clutch is an overheating engine.
Excessively loud cooling fans. Another common symptom of a faulty fan clutch is excessively loud cooling fans.
Decrease in power, acceleration, and fuel efficiency.

How can I tell if my fan clutch is working?

To confirm the diagnosis, start with this simple test: Spin the fan as hard as you can on an engine that has not been started that day. If the fan rotates more than five times, you can bet the clutch is bad. You should feel some resistance and the fan may spin up to three times, depending on the ambient temperature.

Should a fan clutch spin freely?

A surefire way to tell if it’s shot is to stick a screwdriver in the fan when it’s hot. If the fan stops, the clutch is bad. If the fan throws the screwdriver back at you, then the clutch is good. The fan should move freely by hand when the vehicle is off.

Will a fan clutch tighten itself?

it will tighten itself down just fine.