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Why does my radiator fan not work when the AC is on?

Why does my radiator fan not work when the AC is on?

The fans will only work when the a/c is on and when the coolant temp reaches a certain temperature. Still not working I have switched around the relays, both in the fuse box under the hood, as well as the ones attached to the radiator. Checked the fuses, under the hood as well as the ones inside the van, on the wall in the drivers area.

Can a car run without a radiator fan?

Yes, your car can still run without a radiator fan, but you never should. Your vehicle’s cooling system is crucial to the engine’s performance and lifespan. Every time your engine overheats, you’re causing tremendous damage to the precious engine.

Is there a way to test a radiator fan?

You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.

How does a radiator fan work in a car?

The fan should also turn on after switching on the air conditioner. Positioned between the radiator and engine, cooling fans blow cooling air through the car’s radiator to cool down the heated water and coolant mixture that flows through the radiator. The radiator fans blow cooling air through the car’s radiator. Source: Adobe Stock

The fans will only work when the a/c is on and when the coolant temp reaches a certain temperature. Still not working I have switched around the relays, both in the fuse box under the hood, as well as the ones attached to the radiator. Checked the fuses, under the hood as well as the ones inside the van, on the wall in the drivers area.

You can test the electrical radiator fans by taking a wire from the car battery, unplug the radiator fan connector, and put 12v+ and ground into the connector. This is the fastest and easiest way to test your radiator fans. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan.

Where is the switch for the radiator fan?

The radiator fan switch is located on the thermostat housing and if jumped should operate the fans. no, when the AC is on they both seem to work , even when the temp goes up, or if you turn off the AC , then the fan stops turning. I found underneath the Thermostat housing a single wire going into the engine block, is this the sensor switch.

Why do you need a radiator fan in a car?

To stop the engine from overheating, we take the help of coolants that flow through a radiator into the engine. The radiator’s job is to keep the coolant cool so that when it returns back into the engine, it is able to absorb more heat. A radiator fan is thus used to keep the temperature of the coolant in check. Thus, it has an important job.

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Ruth Doyle