Should both fans be on when AC is on?
Both radiator fans should always run when the AC compressor is engaged. 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.
Can a bad thermostat cause AC not to cool in car?
Under most circumstances, a bad thermostat will not have any effect whatsoever on the air conditioning system. A stuck-open thermostat will constantly send coolant through the radiator to cool, meaning that the coolant — and thus the heater — may never reach its full operating temperature.
Why is my engine fan always on?
Cooling fans stay on at all times If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
Why does my engine fan stay on?
It’s normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool. However, if the fan is running for an extended period, the fan itself can become damaged due to overuse. It’s possible you may have a module or relay failing in your car.
How long can a fan run continuously?
You can leave a fan running continuously for eight hours, on average, without worrying about unexpected ceiling damage or fires in your home.
Why does my car fan sound like its off?
Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off. Once outside the car, she could hear a fan running in the engine area and asked us if this is normal. It is. And many other sounds from under the hood of a car that has been shut off are also normal.
Why is my engine cooling fan so loud?
Worn bearings, bent or broken blades, and unbalanced rotating assemblies can cause a fan to screech, howl, or otherwise make noises it shouldn’t. If you have a noisy radiator fan, don’t put up with it any longer than you have to. Our expert mechanics are here to help with all your vehicle service needs.
What does a bad cooling fan sound like?
A loud whirring Noise 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. When the fan clutch begins to fail, it will cause an embarrassing whirring noise.
How much does it cost to replace radiator fan?
The average radiator fan replacement cost is typically between $550 and $650. In many cases, the radiator fan will cost around $400 to $450, while the labor adds $150 to $200. However, some vehicles can be more expensive, depending on the design.