How do you know if you have a broken radiator fan?
These are the most common signs of a faulty radiator fan assembly in need of replacement:
- Engine Overheating. When the radiator fan isn’t functioning properly, it is not able to adequately cool down the car’s engine.
- Air Conditioner Function Diminished.
- Loud Noise Coming From Radiator Fan.
Can I drive with one radiator fan not working?
Yes, you can drive your car without a radiator fan, but you never should. Your vehicle’s cooling system is crucial to its performance, and every time your engine overheats, you cause damage.
Should radiator fan come on when car starts?

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.
What happens if your radiator fan stops working?
What happens if the cooling fan stops working? If your cooling fan stops working, your engine could overheat. This could cause damage to your engine parts. It’s a serious issue and needs to be looked at by a garage.
What does a broken radiator fan sound like?
In some cases, when the radiator cooling fan motor fails, you’ll notice a loud clicking or whirring noise that changes as you rev your engine.

How do you check if cooling fan is working?
60 second clip suggested2:03How to check fix radiator cooling fan on your car – YouTubeYouTube
How do you test a radiator fan?
How to Check a Radiator Fan
- Determine whether your radiator fan is manual or electric.
- To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on.
- Use the volt meter to test if there is power to the wires.
- Normal voltage for a radiator fan is around 12 volts.
Do radiator fans always spin?
The fan shouldn’t run constantly, but it is supposed to switch on at a specific temperature (the exact temperature varies from car to car, as different engines have different operating temperatures) to cool the engine down before it gets dangerously hot.
How much does it cost to fix a radiator fan?
Radiator Fan Motor Replacement Cost – RepairPal Estimate. The average cost for radiator fan motor replacement is between $597 and $639. Labor costs are estimated between $131 and $166 while parts are priced between $466 and $473.
When should your cooling fan turn on?
To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Most fans should come on when the coolant reaches about 200 to 230 degrees.
What does it mean when your radiator smokes?
The radiator prevents overheating by cooling the fluid that flows around the engine block to dissipates the engine’s heat. When you see smoke coming from the radiator, it is an indicator that the radiator has not been able to do this job and the car is overheating as a result.