2017 Ford Expedition Air Conditioner Not Blowing

Introduction

A malfunctioning air conditioner in your 2017 Ford Expedition can be a major discomfort, especially during hot weather. Whether it’s blowing warm air, emitting a strange smell, or simply not blowing at all, a non-functional AC can make driving unpleasant and even unsafe. Addressing this issue promptly is important, not just for your comfort, but also to prevent further damage to your vehicle’s climate control system. Let’s get started on figuring out why your 2017 Ford Expedition air conditioner is not blowing.

Common Causes of 2017 Ford Expedition Air Conditioner Not Blowing

Here are some common reasons why the AC in your 2017 Ford Expedition might not be blowing:

Blown Fuse: A blown fuse is a very common cause of AC failure. It protects the AC system from power surges.
Refrigerant Leak: Low refrigerant levels can prevent the AC from cooling properly or blowing at all.
Faulty Blower Motor: The blower motor is responsible for pushing air through the vents. If it fails, no air will be blown.
Blower Motor Resistor Failure: This resistor controls the speed of the blower motor. A bad resistor can result in no air blowing or only one speed working.
Clogged Cabin Air Filter: A dirty cabin air filter restricts airflow, reducing the amount of air that can be blown into the cabin.
Compressor Problems: The AC compressor circulates refrigerant. A failing compressor won’t cool the air.
Electrical Issues: Wiring problems, faulty relays, or a bad AC control module can all prevent the AC from working.
Vacuum Leaks: Vacuum leaks can affect the operation of the blend door, which controls the mix of hot and cold air.
Blend Door Actuator Failure: The blend door actuator controls the position of the blend door. If it fails, the door might be stuck in a position where no cold air flows.

Symptoms Checklist

Here are some signs that can help you pinpoint the AC issue:

No air blowing from the vents.
Air blowing, but it’s warm, not cold.
Weak airflow from the vents.
Unusual noises coming from the AC system.
AC only works on certain blower speeds.
Musty or unpleasant odor coming from the vents.
AC compressor not engaging (you may not hear a click when turning the AC on).

How to Fix 2017 Ford Expedition Air Conditioner Not Blowing Step-by-Step Guide

Follow these steps to troubleshoot your AC problem:

Check the Fuses: Locate the fuse box (usually under the hood or inside the cabin). Consult your owner’s manual to identify the AC and blower motor fuses. Use a fuse tester or visually inspect the fuses for breaks in the wire. Replace any blown fuses with the correct amperage rating.
Inspect the Cabin Air Filter: Locate the cabin air filter (usually behind the glove box). Remove the filter and inspect it for dirt and debris. A clogged filter restricts airflow. Replace it if it’s dirty.
Listen for the Compressor Clutch: With the engine running and the AC turned on, listen for a click sound from the engine compartment. This indicates the AC compressor clutch is engaging. If you don’t hear the click, the compressor might not be receiving power.
Check the Blower Motor Resistor: The blower motor resistor is typically located near the blower motor, often under the glove compartment. A common symptom of a faulty resistor is the blower only working on high speed. Inspect the resistor and its connector for any signs of damage or corrosion.
Test the Blower Motor: Locate the blower motor (usually under the glove compartment). Disconnect the connector to the blower motor and use a multimeter to check for voltage when the AC is turned on. If there’s no voltage, the problem is upstream of the motor (fuse, relay, wiring).
Inspect the Blower Motor Ground Connection: Ensure the blower motor has a good ground connection. Check the ground wire for corrosion or looseness. Clean or tighten the connection as needed.
Check Refrigerant Lines: Visually inspect the refrigerant lines for any signs of leaks, such as oily residue. If you suspect a leak, it’s best to have a professional check the refrigerant level.
Reset the Climate Control System: Sometimes, the climate control system can experience glitches. Try disconnecting the negative battery terminal for about 15 minutes to reset the system. Reconnect the battery and see if the AC starts working.
Inspect the Blend Door Actuator: Locate the blend door actuator (usually near the climate control box). Turn the temperature dial from hot to cold and observe the actuator. It should move the blend door. If it doesn’t move, the actuator might be faulty.
Check for Obstructions in the Vents: Sometimes, debris or objects can block the vents, restricting airflow. Use a vacuum cleaner or a long, flexible brush to clear any obstructions.
Inspect Wiring and Connectors: Carefully inspect the wiring and connectors related to the AC system for any signs of damage, corrosion, or loose connections. Repair or replace any damaged wiring.
Check the AC Relay: Locate the AC relay in the fuse box (consult your owner’s manual). Try swapping it with another similar relay to see if the AC starts working. If it does, the original relay is faulty.

Fix the Issue Without Buying Parts

Here are some free methods to try:

Reset the System: As mentioned before, disconnecting the negative battery terminal can sometimes reset the system.
Clean the Cabin Air Filter: If the filter isn’t too dirty, you can try vacuuming it to remove loose debris.
Inspect Connections: Check all visible wiring connections for looseness or corrosion. Clean and tighten as needed.
Maintenance: Regularly replace the cabin air filter and keep the condenser free of debris to ensure proper airflow.

When Replacement Might Be Necessary

If you’ve tried the above steps and the AC still isn’t working, you might need to consider replacing some parts. Here are some common components that fail:

Blower Motor: If the blower motor is completely dead, it needs to be replaced. Estimated cost: $150-$300 (including labor).
Blower Motor Resistor: If the blower only works on one speed, the resistor likely needs replacement. Estimated cost: $50-$150 (including labor).
AC Compressor: A failing compressor is a major repair. Estimated cost: $500-$1200 (including labor and refrigerant recharge).
Blend Door Actuator: If the blend door isn’t functioning correctly, the actuator needs replacement. Estimated cost: $100-$300 (including labor).

Safety Warning

Always disconnect the negative battery terminal before working on electrical components.
Avoid working on the AC system if you’re not familiar with refrigerant handling.
Wear safety glasses to protect your eyes from debris.
Do not work under the vehicle without proper support (jack stands).

Tools You May Need

Screwdrivers (Phillips and flathead)
Socket set
Fuse puller
Multimeter
Flashlight
Vacuum cleaner
Safety glasses

FAQ

Here are some frequently asked questions:

Q: Why is my AC blowing warm air sometimes and cold air other times? A: This could be due to a low refrigerant level or a failing compressor.
Q: How often should I replace my cabin air filter? A: Typically, every 12,000 to 15,000 miles, or once a year.
Q: What does it mean when my AC smells musty? A: It usually indicates mold or mildew growth in the evaporator core. Cleaning the evaporator core can help.
Q: Can I recharge my AC myself? A: While DIY AC recharge kits are available, it’s generally recommended to have a professional handle refrigerant recharging to ensure proper levels and prevent leaks.

Conclusion

Troubleshooting your 2017 Ford Expedition’s AC problem can seem daunting, but by following these steps, you can often identify and resolve the issue yourself. Start with the simple solutions like checking fuses and the cabin air filter. If the problem persists, consider more advanced troubleshooting. However, if you’re not comfortable with any of these steps, it’s always best to consult a qualified technician. You might save yourself some money and trouble by trying to fix it yourself first!