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.

How do you know if your radiator fan switch is bad?

The best way to tell if your cooling switch is faulty is to listen to your engine while you drive. You know how your engine is supposed to sound, and if you notice that you don’t hear the fan as often as you normally do during your afternoon commute, you might have a failing switch.

How do you test a radiator cooling fan?

1. Determine whether your radiator fan is manual or electric. …
2. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on.
3. Use the volt meter to test if there is power to the wires. …
4. Normal voltage for a radiator fan is around 12 volts.

Can you drive a car if the radiator 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.

Can a bad thermostat cause radiator fan not to work?

Broken Thermostat Thermostats are known to go bad and cause all sorts of cooling issues. … If this thermostat doesn’t open when the engine reaches the working temperature, the coolant will stay inside the engine block and the engine will start to overheat. This will result in the radiator fan not working.

Where is the fuse for the radiator fan?

If you don’t see one that says fan or cooling fan, you will need to find the cabin fuse box. This is located in different places, again dependent on the manufacturer and model. Some times it is located behind the glove compartment, sometimes on the lower, left end of the dash board.

When should radiator fans 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 much does it cost to fix a 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.

What are signs of a bad thermostat?

• #1 – Temperature Gauge Reading Higher (or Lower) Than Normal.
• #2 – Sudden Air Temperature Changes Inside Vehicle.
• #3 – Coolant Leaking.
• #4 – Rumbling Noises.
• #5 – Heater Malfunction.

Does radiator fan come on with AC?

In a nutshell: The radiator fan comes on so the A/C works at its highest efficiency. The A/C condenser (the part which sits in front of the coolant radiator) is a heat exchanger.

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How can you tell if a fan fuse is blown?

Remove the fuse from its holder. In some cases you may need a small screwdriver to unscrew the fuse holder cap. Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

What are the signs that your car needs a new thermostat?

• Odd Temperature Gauge Readings. Your temperature gauge should register cold when you first start your car and slowly build up to normal as the engine warms up. …
• Air Temperature Changes. …
• Coolant Leaks. …
• Strange Sounds. …
• Heater Problems.

How long do radiator fans last?

In most cases, a properly maintained radiator fan will last between eight and ten years. When the radiator fan fails, it should be replaced as soon as possible. This is because without a cooling fan to help remove heat from the engine, your car is more likely to overheat and cause damage to important engine components.

Do radiator fans always run?

Temperature will often determine the time that a radiator fan starts up. A temperature-sensitive switch functions to turn the fan on and off periodically. Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit.

Should both my radiator fans turn on?

Both fans should come on when the A/C is on. If one or both fans fail to come on, the lack of additional cooling provided by the fan may cause poor A/C cooling performance, and it may cause the A/C compressor to overheat and fail.

How do you fix a fan that won't turn on?

1. Check the Cord. It sounds simple, but your first step should be to make sure the cord is securely plugged in. …
2. Check Your Circuit Breaker. …
3. Check for Power to Your Outlet. …
4. Check the Fan Fuse. …
5. Replace the Cord. …
6. Clean the Fan. …
7. Grease the Motor. …
8. Call Customer Support.

Why did my fan stop working?

This could be because the circuit breaker has tripped or is off. Check your panel to confirm this. If the circuit breaker works fine, it could be a problem with loose wiring and connections. Your ceiling fan could also stop working due to internal defects namely shot ball bearings or an overheated motor.

How do I change a fan fuse?

1. Disconnect the fan from power.
2. Remove the four screws to open the electronics cover.
3. Gently twist and pull out the fuse holder and replace the fuse.
4. Reinstall the fuse holder.
5. Reattach the electronics cover.

How do you know if car water pump is bad?

1. Coolant Leaking. One of the first signs of a potentially faulty water pump is a puddle of coolant on the ground where you’ve parked your car. …
2. Rust or Deposit Build-Up. …
3. Noise. …
4. Overheating. …
5. Steam.

Why is my car still overheating after adding coolant?

Your car uses a combination of air from the moving car and air blown onto the radiator by the cooling fan. When this air flow is blocked, the coolant isn’t able to properly cool off before being exposed to more heat. If the problem is severe enough, the coolant will boil and the engine will overheat.

How do you reset a thermostat?

1. Turn your thermostat off by switching it to the off position.
2. Find the breaker that powers your HVAC system and turn it off.
3. Wait 30 seconds and turn the breaker back on.
4. Turn your thermostat back on.

How much does it cost to replace a thermostat?

National Average Cost$229Average Range$142 to $346

How often should you change your thermostat in your car?

There is not a set time for the car radiator to stop working. However, most car experts recommend car thermostat replacement after 10 years.