Your Ford Expedition’s Fan Won’t Turn Off? Here’s Why!

Do you own a Ford Expedition and are experiencing a problem with the fan not turning off If so, you are not alone. This is a common issue that can be frustrating and inconvenient. However, there is a simple solution. In this guide, I will walk you through the steps to troubleshoot the problem and get your fan back to working properly.

Reasons Why Ford Expedition Fan Won T Turn Off

Here are the reasons:

Bad Thermostat

The thermostat is a valve that controls the flow of coolant through the engine. If the thermostat is stuck open, coolant will continue to flow through the radiator even when the engine is cold, which will cause the engine to overheat. This can damage the engine and cause the fan to come on even when the engine is not running.

Faulty Radiator Fan Control Module

The radiator fan control module is a computer that controls the speed of the radiator fan. If the module is faulty, it may not be able to properly control the fan speed, which can cause the fan to come on even when the engine is not running.

Bad Radiator Fan

The radiator fan is a motor that turns the fan blades. If the fan is faulty, it may not be able to turn on or may not be able to turn on at the correct speed. This can cause the fan to come on even when the engine is not running.

Shorted Wiring

The wiring to the radiator fan can become shorted, which can cause the fan to come on even when the engine is not running. This can be caused by a number of things, such as a loose connection, a damaged wire, or a faulty connector.

How to Troubleshoot: Ford Expedition Fan Won’t Turn Off

The fan in your Ford Expedition is an important part of the cooling system. It helps to circulate air through the radiator, which helps to keep the engine cool. If the fan won’t turn off, it can cause the engine to overheat. There are a few things that you can check to troubleshoot the problem.

Possible Causes

There are a few possible causes for a Ford Expedition fan that won’t turn off. These include:

A faulty fan switch
A faulty fan relay
A faulty fan motor
A problem with the wiring

Troubleshooting Steps

To troubleshoot the problem, you will need to:

1. Check the fan switch.
2. Check the fan relay.
3. Check the fan motor.
4. Check the wiring.

Checking the Fan Switch

The fan switch is located under the hood of your Ford Expedition. It is a small, rectangular switch with two terminals. To check the fan switch, you will need to:

1. Locate the fan switch.
2. Disconnect the battery.
3. Test the fan switch with a multimeter.

If the fan switch is faulty, you will need to replace it.

Checking the Fan Relay

The fan relay is located under the hood of your Ford Expedition. It is a small, cylindrical relay with three terminals. To check the fan relay, you will need to:

1. Locate the fan relay.
2. Disconnect the battery.
3. Test the fan relay with a multimeter.

If the fan relay is faulty, you will need to replace it.

Checking the Fan Motor

The fan motor is located in the front of your Ford Expedition. It is a large, cylindrical motor with three wires. To check the fan motor, you will need to:

1. Locate the fan motor.
2. Disconnect the battery.
3. Test the fan motor with a multimeter.

If the fan motor is faulty, you will need to replace it.

Checking the Wiring

The wiring for the fan is located under the hood of your Ford Expedition. It is a series of wires that connect the fan switch, the fan relay, and the fan motor. To check the wiring, you will need to:

1. Locate the wiring for the fan.
2. Inspect the wiring for damage.
3. Repair or replace any damaged wiring.

If the wiring is faulty, you will need to repair or replace it.

Conclusion

If you have followed these troubleshooting steps and you are still unable to fix the problem, you will need to take your Ford Expedition to a qualified mechanic.

Also Read: Ford Expedition Fuel Gauge Not Working

FAQs: Ford Expedition Fan Won’t Turn Off

Why is my Ford Expedition fan not turning off?

There are a few possible reasons why your Ford Expedition fan might not be turning off. Here are some of the most common causes:

A faulty thermostat: The thermostat is responsible for regulating the temperature of your engine. If the thermostat is stuck open, it will allow coolant to flow through the radiator even when the engine is not running, which can cause the fan to stay on.

A faulty coolant temperature sensor: The coolant temperature sensor sends a signal to the computer, which tells the fan when to turn on and off. If the sensor is faulty, it can send the wrong signal to the computer, which can cause the fan to stay on.

A faulty fan switch: The fan switch is responsible for turning the fan on and off. If the switch is faulty, it can prevent the fan from turning off.

A dirty radiator: A dirty radiator can restrict airflow, which can cause the fan to stay on longer than necessary.

A clogged air filter: A clogged air filter can restrict airflow, which can also cause the fan to stay on longer than necessary.

How do I fix my Ford Expedition fan?

To fix your Ford Expedition fan, you will need to identify the cause of the problem. Once you have identified the cause, you can take the appropriate steps to fix it. Here are some tips for fixing a faulty fan:

Check the thermostat: If the thermostat is stuck open, you will need to replace it.

Check the coolant temperature sensor: If the sensor is faulty, you will need to replace it.

Check the fan switch: If the switch is faulty, you will need to replace it.

Clean the radiator: If the radiator is dirty, you can clean it with a garden hose or a pressure washer.

Replace the air filter: If the air filter is clogged, you can replace it with a new one.

Is it safe to drive my Ford Expedition with the fan on?

It is not safe to drive your Ford Expedition with the fan on if the fan is not working properly. If the fan is not working properly, it can cause the engine to overheat, which can damage the engine. If you notice that your fan is not working properly, you should have it fixed as soon as possible.

How much does it cost to fix a Ford Expedition fan?

The cost of fixing a Ford Expedition fan will vary depending on the cause of the problem. The cost of replacing a thermostat can range from $50 to $100. The cost of replacing a coolant temperature sensor can range from $50 to $100. The cost of replacing a fan switch can range from $50 to $100. The cost of cleaning a radiator can range from $50 to $100. The cost of replacing an air filter can range from $10 to $20.

What can I do to prevent my Ford Expedition fan from not turning off?

There are a few things you can do to prevent your Ford Expedition fan from not turning off. Here are some tips:

Keep your coolant levels topped off: Make sure that your coolant levels are always topped off. This will help to prevent the thermostat from sticking open.

Have your coolant system flushed regularly: Having your coolant system flushed regularly will help to remove any debris that could be causing the coolant temperature sensor to malfunction.

Inspect your radiator regularly: Inspect your radiator regularly for any signs of damage or leaks. If you see any damage or leaks, have the radiator repaired or replaced as soon as possible.

Replace your air filter regularly: Replacing your air filter regularly will help to improve airflow to the engine, which can help to prevent the fan from staying on longer than necessary.