How does an electric fan work on a car?

If the car is hot, the thermostat will switch on, sending that +12 volts to one side of the relay coil. That can then “escape” to ground through the starter solenoid coil to the chassis ground.

What kind of wire is used to turn on a fan?

SIGNAL CIRCUIT 12V SWITCHED (IGNITION OR FUSE PANEL) Power “ON” when key is in the “RUN” position. 1ST RELAY TURNS ON FAN WHEN TEMP SENSOR IS ACTIVATED BATTERY 86 30 87 85 12V SWITCHED WIRE TO GREEN WIRE AT A/C CLUTCH. NOTE: OR IN AN ’84 TO ‘89 240 YOU MAY USE THE A/C POWER ‘ON’ WIRE: RED/WHITE WIRE AT AC SWITCH MICROSWITCH IN DASH.

Can a mechanical fan be removed from a car?

If your mechanical fan had a fan spacer, it can be removed with the fan. Next, find a suitable location for the relay that is away from excessive heat, and someplace where it’s not exposed to the elements, such as water splashing up from the road.

Where does the 12 volts come from on a car fan?

In normal operation, the +12 volts comes from the ignition switch to the thermostat. If the car is hot, the thermostat will switch on, sending that +12 volts to one side of the relay coil. That can then “escape” to ground through the starter solenoid coil to the chassis ground.

Do you need to replace the condenser fan in a car?

Many cars use the same fan for both the radiator and the condenser though. Anytime the air conditioning is on, your condenser fan should be running. If you start the engine, you should see this fan spinning with the AC system. If it’s not, you need to replace it.

Where is the air conditioner fan located on a car?

One is used on the radiator, while the other is found on the condenser. To tell them apart, you might need to reference your car’s service manual. Many cars use the same fan for both the radiator and the condenser though. Anytime the air conditioning is on, your condenser fan should be running.

How does an electric cooling fan work in a car?

However, some longitudinal (front to rear) mounted engines use the electric fan as well, but they usually have an engine-powered cooling fan. The electric cooling fan uses a direct current (DC) electric motor with a thermo switch, module or computer control to turn it on or off, depending on coolant temperature or AC operating condition.