Should radiator fan come on when AC is turned on?

Should radiator fan come on when AC is turned on?

When the AC compressor is activated, it is actually expected that the radiator fan runs. For instance, the radiator fan is needed when the temperature sensor of the cooling fluid in the lower tank reaches approximately 212F.

What makes radiator fan come on?

Fan Trigger The engine temperature should trigger the fan to turn on. It will also turn the fan off once the engine has cooled to under 200 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. This is linked to a thermostat and works much like your home’s HVAC system.

Why does the radiator fan not turn on?

If the fan doesn’t come on, you need to look for a blown fuse or breaker. In older cars, you might have a fusible link – this is wire within an insulated block of rubber. Try to grab the end and stretch it. If the wire stretches, the wire link could be broken and you’ll need to replace it.

When should radiator fan come on?

Most fans should come on when the coolant reaches about 200 to 230 degrees. If the fan does not come on, something in the control circuit is defective.

Why is the radiator fan not working on my Pontiac Grand Prix?

If the engine coolant level isn’t high enough to keep pressure in the engine it will run hot. But, there won’t be enough coolant to reach the temperature sensor. Without the coolant hitting the sensor, the temp reading will be significantly lower than the actual engine temp. Your Grand Prix’s radiator fan will not kick on.

Why is the radiator fan on my car not working?

A list of the main reasons why your radiator fan won’t start. Magnus Sellén; If the fan is not working even when the car is overheating, there might be a wiring issue or a bad connection. Check the wirings going to the radiator fan from the control unit or relay. Check in the connector plugs for any signs of corrosion.

Where is the relay on a radiator fan?

The fan relay is often located in the engine bay’s fuse box, but the best way is to check your repair manual to find where it is located. Testing a 4 pin relay is often very straightforward. Remove the relay and give 12 volts to pin 30 and 85. Ground pin 86 and check if there is voltage coming out from pin 87.

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