how to fix my Ford F-150 13th Generation (2015-2020) if the AC isn't blowing cool air?

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

554 words

Problem Statement

Learn how to diagnose and fix AC not blowing cool air in Ford F-150 (2015-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before working on the AC system components.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•Loud clicking or grinding noises when AC is turned on
•Poor airflow from AC vents
•AC warning light illuminated on the dashboard

Diagnostic Steps

1
Check and record any error codes using an OBD-II scanner.
2
Inspect the AC refrigerant levels using a manifold gauge set.
3
Examine the AC compressor clutch for engagement when the AC is activated.
4
Check for any blown fuses related to the AC system.
5
Inspect the cabin air filter for blockages or excessive dirt.
6
Verify the functionality of the AC control module and related sensors.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Manifold gauge set
•Multimeter
•Basic hand tools
•Torque wrench

Parts Required

•Refrigerant (R-134a or R-1234yf)
•Cabin air filter
•AC compressor (if found defective)
•AC relay (if found defective)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check and record any error codes using an OBD-II scanner.
2
Inspect the AC refrigerant levels using a manifold gauge set.
3
Examine the AC compressor clutch for engagement when the AC is activated.
4
Check for any blown fuses related to the AC system.
5
Inspect the cabin air filter for blockages or excessive dirt.
6
Verify the functionality of the AC control module and related sensors.

Solution

1. Preparation

Gather all necessary tools and parts.
Disconnect the battery to prevent electrical shock.
Ensure the vehicle is parked on a level surface and the engine is off.

2. Check Refrigerant Levels

Tools Required: Manifold gauge set, refrigerant (if needed).
Connect the manifold gauges to the low and high-pressure service ports.
Start the engine and turn the AC to the maximum setting.
Check the gauge readings; if low, add the appropriate refrigerant (R-134a or R-1234yf as per system specifications).

3. Inspect AC Compressor

Tools Required: Multimeter, basic hand tools.
Locate the AC compressor and visually inspect for any signs of damage or leaks.
Use a multimeter to check the voltage at the compressor connector while the AC is activated. If no voltage is present, trace back to the AC relay and control module.

4. Replace Cabin Air Filter

Tools Required: None required, but a flathead screwdriver may help.
Locate the cabin air filter housing (usually behind the glove box).
Remove the glove box if necessary to access the filter.
Remove the old filter and replace it with a new one, ensuring it is correctly oriented according to airflow direction.

5. Replace Faulty Components (if necessary)

Tools Required: Socket set, torque wrench.
If the AC compressor or any other component is faulty based on previous checks, remove the defective part.
Install the new part, ensuring all connections are secure and torqued to factory specifications.