If the fan fails, the condenser can’t do its job and the A/C system will blow warm air. Warning lights are on: A faulty radiator fan can trigger warning lights such as the engine temperature and check engine lights. In some cases, the A/C system may also display some type of warning, such as a flashing A/C button.
Six things may prevent an electric cooling fan from coming on: Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay.
Thereof, Does radiator fan come on with AC?
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.
Also to know is, Can I drive my car if the fan is not working? As such, you should never drive your vehicle if the cooling fan isn’t working even though you can. It’s crucial to maintain ideal operating conditions. … Bear in mind, without the radiator fan the only way to draw cool air through your vehicle’s grille and into the engine is by motion.
Subsequently, question is, Should both fans be on when AC is on? Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
Also, How do I fix my radiator fan not working?
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.
How do I fix my radiator fan?
How do I know if my radiator fan is bad?
– Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. …
– Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. …
– Blown fuse.
What are the symptoms of a faulty cooling fan switch?
– Engine overheating. Engines generate an enormous amount of heat and as a result are subjected to very large temperature swings if this switch does not operate effectively. …
– Check Engine Light comes on. …
– Broken or shorter signal wire.
What happens if your car fan doesn’t work?
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.
How much does it cost to fix a radiator fan?
The Best in Auto Repair The average cost for radiator fan motor replacement is between $591 and $624. Labor costs are estimated between $111 and $140 while parts are priced between $480 and $484. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed.
What does a cooling fan switch do?
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.
What causes a cooling fan not to work?
Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay. A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.)
When should the radiator fan kick on?
Your radiator fan should kick in at about 200 degrees Fahrenheit. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
How can I tell if my radiator fan is working?
– 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.
Are radiator fans supposed to run all the time?
Besides, are radiator fans supposed to run all the time? An electric fan SHOULD NOT run all the time. A mechanical fan WILL spin as long as the engine is running, but it will only ‘lock up’ when needed. … The fan turning on is normal and a consequence of the hot coolant, not a cause.
Do radiator fans always run?
Both radiator fans should always run when the AC compressor is engaged. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F.
How much does it cost to fix the fan in a car?
The labor tends to be around the $80-$90 range for replacing the AC fan, but with some vehicles, it can cost you closer to $120. The price of parts varies based on what kind of car you have as well. On the low end, you have replacement parts costing about $140, but on the high end, it can be as much as $300 and up.
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