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The most common reasons a radiator fan is not working are luckily due to a blown fuse, bad relay, or a broken wire. It can also be caused by a faulty coolant temp sensor, low coolant level or the fan itself can be damaged.
What will cause radiator fan not to come on?
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. A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.) Bad fan motor.
How do I know if my radiator fan fuse is bad?
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 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. If the radiator does not have cool air blowing on it constantly, it will overheat eventually, so you’d need the perfect combination of weather and traffic to drive effectively without a radiator fan.
How do I know if my radiator fan motor is bad?
The first symptom or sign that something has gone wrong is that your cooling fan doesn’t come on at all. This is the most common symptom of a faulty cooling fan motor, but it may not be one you notice while driving your vehicle. If the motor burned out or starts to fail in any way, the cooling fans are disabled.
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.
Can you drive with a bad radiator fan?
Can You Drive With A Bad Fan Motor? It is never a good idea to drive with a faulty radiator fan. In the event that the fan fails to circulate cool air to the engine, it could cause severe damage to the motor as it overheats. A bad radiator fan will cost you more than replacing the engine, which is much less expensive.
What are the symptoms of a faulty cooling fan switch?
Common signs include engine overheating, the Check Engine Light coming on, and a broken or shorter signal wire.
How much does it cost to fix a radiator fan?
As one of the more expensive car repairs needed (not including the replacement of a seized car engine, obviously), the replacement of the radiator coolant fan could incur about $128 to $162 in labor costs and around $465 in parts. So, total radiator fan replacement cost could be anywhere from $592 to $627.
How much does it cost to get a radiator fan replace?
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.
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.
How long do radiator fans last?
Your car fan will run for a few minutes after you turn off the car then turn it off. This is normal in many vehicles, such as BMW or Mercedes-Benz. The radiator fan may run up to five minutes and sometimes longer. Unless there is an electrical issue, it may stay on all the time until it drains the battery.
Where is the radiator cooling fan switch located?
The cooling fan switch should be located near the thermostat housing on the left side of the engine, behind the distributor assembly.
Where is the cooling fan sensor located?
It is most often located close to the thermostat of the cooling system or inside of it. The cooling system is located beneath the air intake pipe and behind the right cylinder.
How much does a cooling fan relay cost?
To get your cooling fan relay replaced, you will pay, on average, $80-$160, depending on the type of car you have and the mechanic’s fees. The labor should cost around $70, while parts should run you $10-$50.
What is the radiator fan fuse called?
The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator.
Where is the fuse for the fan motor?
Under the instrument panel, look under the glove box. On the right side of the fender wall you will find another fuse box. The blower motor fuse is easy to replace.
What fuse controls the AC fan?
To protect the blower motor power circuit, a 20-, 25- or 30-amp fuse is usually located in the fuse panel under the dash. The rating of the fuse will depend on the vehicle application and how much power the blower motor requires at full speed.
