Do electric fans need Relays?

Do electric fans need Relays?

Most parts stores carry toggle switches and/or push-pull switches that will handle anywhere from 30-60 amps, so that would work. If you’re using one of those thermostatically-controlled deals (or a low amp rated manual switch) you should use a relay.

How do I know if my fan relay is bad?

Symptoms of a Bad or Failing Cooling Fan Relay

1. Engine running hot. One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats.
2. Cooling fans do not function.
3. Cooling fans stay on at all times.

How many amps does a car fan use?

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.

Can one relay run two fans?

Yes, you can control dual fans separately. You can use dual thermostatic switches that control each fan individually for example. Start with taking both of the positive wires from the fans and connect them to the yellow wires on each relay.

How many amps is a 12v car fan?

Fans are usually wired 20-30 amps. It sounds like yours could use a 10 amp fuse, but the important part is the gauge of the wire you are running to the fans. You should fuse to protect the wires on a simple 12v circuit.

What is an automotive fan relay?

A cooling fan relay is used on vehicles that have an electrical fan to cool the engine. The function of the cooling fan relay is to convert a low voltage signal from either the electronic control module (ECM) or a thermostatically controlled sensor.

What is an electric fan relay?

Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. The cooling fan relay is the relay that controls the engine’s cooling fans. When the correct parameters are met, a temperature switch or the computer will activate the relay, which will allow power to the fans.

How do you test a radiator fan relay?

Open your hood and take some time to locate your fusebox, which is mounted in front of the passenger side of the firewall. Remove the top cover to expose your fusebox and relays, check your radiator fan relays and remove them. Inspect for any damage to the pins or the body of the relay, such as bubbling or melting.

What is a fan control relay?

The function of the cooling fan relay is to convert a low voltage signal from either the electronic control module (ECM) or a thermostatically controlled sensor. The cooling fan relay takes the low voltage signal and internally switches the relay “on” to allow battery voltage to be supplied to the radiator cooling fan.