how to fix the AC in my Ford F-150 13th Generation (2015-2020) that isn't cooling?

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

528 words

Problem Statement

Learn how to diagnose and fix AC not cooling 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.
•Wear safety glasses when handling refrigerants and during compressor replacement.

Symptoms

•AC system blows warm air
•AC compressor does not engage
•Unusual noises when the AC is on
•Presence of refrigerant leaks (oil stains around AC components)
•AC system cycles on and off frequently

Diagnostic Steps

1
Check the AC control settings to ensure the system is set to maximum cooling.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect AC compressor for signs of damage or failure.
4
Verify refrigerant levels using a manifold gauge set.
5
Check the AC fuse and relay for continuity.
6
Inspect the cabin air filter for blockages.

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
•Screwdriver
•Socket set
•Torque wrench
•Safety glasses

Parts Required

•Replacement cabin air filter
•Refrigerant (R-134a or as specified)
•AC compressor (if replacement is necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the AC control settings to ensure the system is set to maximum cooling.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect AC compressor for signs of damage or failure.
4
Verify refrigerant levels using a manifold gauge set.
5
Check the AC fuse and relay for continuity.
6
Inspect the cabin air filter for blockages.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface with the engine off.
Disconnect the battery to ensure safety.

2. Check and Replace the Cabin Air Filter

Tools Required: Screwdriver, replacement cabin air filter
Locate the cabin air filter housing, usually behind the glove compartment.
Remove the glove compartment to access the filter.
Remove the old filter and replace it with a new one, ensuring proper orientation.

3. Inspect and Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant, safety glasses
Connect the manifold gauge set to the AC service ports (high and low).
Check the pressure readings; if low, proceed to recharge the system.
Attach the refrigerant canister to the low-pressure side and follow the manufacturer's instructions to add refrigerant until optimal pressure is reached.

4. Test and Replace the AC Compressor (if necessary)

Tools Required: Socket set, torque wrench, replacement AC compressor
Disconnect the electrical connector from the AC compressor.
Remove the serpentine belt from the compressor.
Unbolt the compressor from its mounting bracket and remove it.
Install the new compressor, ensuring to torque bolts to manufacturer specifications.
Reconnect the electrical connector and serpentine belt.

5. Verify AC System Function

Reconnect the battery and start the engine.
Turn on the AC to check if it is cooling properly.
Monitor for unusual noises and ensure the compressor is engaging.