How do you test a radiator fan problem?

Symptoms of a Bad or Failing Cooling/Radiator Fan Motor

1. Cooling fans do not come on. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on.
2. Vehicle overheating. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating.
3. Blown fuse.

Where is the radiator fan fuse located?

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.

How do I know if my radiator fan relay is bad?

Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.

What causes the radiator fan to stop working?

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 causes a cooling fan not to work?

ELECTRIC COOLING FAN PROBLEMS 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.)

What can cause radiator fan to stop working?

How do I know if my fan control module is bad?

Symptoms of a Cooling Fan Module Failure

1. An overheating engine. When the cooling fan module fails completely, the cooling fans will not work at all.
2. Cooling fans running non-stop.
3. Poor circulation of fresh air in the cabin of the car.

Where is the fan relay located?

The cooling fan control module in your vehicle is located at the front left of the engine compartment next to the radiator.

Does the radiator fan have a fuse?

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.

Is there a fuse for the radiator fan?

If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan. The fan itself often uses a big fuse of around 50A, while there might also be a separate small fuse to the fan control module.

What causes a radiator fan to stop working?

A defective fan belt can cause the fan to stop working and not pull cooling air through the radiator. If your on the highway you might not even notice this as the speed of your vehicle will push air through the radiator. Once you stop, that air will not be pushed through your cooling system and you will overheat.

Why my radiator fan does not turn on?

The biggest cause of a radiator fan not working is a broken fuse. To see if the fuse is intact and working, you’ll need to look at the fuse panel in your vehicle which will probably be under the hood. The actual location will be listed in your owner manual and will show which fuse works for which component.

When should my radiator fan start working?

Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit. A radiator fan uses its fast spinning blades to draw in outside air. This in turn cools the antifreeze and water that’s within the radiator, which keeps the vehicle’s engine cool as well.

How to replace radiator fan?

1) Locate the Radiator Cooling Fan Locating the radiator cooling fan is the first step in replacing it. Turn off your car and allow it to cool off. 2) Disconnect the Power Supply On the fan motor is an electric cable running towards the engine. 3) Remove the Fan Housing Using a wrench, remove the four screws located at each corner of the fan housing. 4) Remove the Radiator Cooling Fan and the Fan Motor The fan blade is either pinned or screwed to a shaft. 5) Attach the Replacement Radiator Cooling Fan and Fan Motor