how to fix Ford F-150 13th Generation (2015-2020) air conditioning not cooling

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

552 words

Problem Statement

Learn how to diagnose and fix the A/C not cooling issue in Ford F-150 13th Generation (2015-2020). Step-by-step guide with tools and procedures.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Always wear safety glasses and gloves when handling refrigerants and A/C components.

Symptoms

•A/C compressor not engaging
•Warm air blowing from vents
•Unusual noises from the A/C system
•A/C system blowing air but not cooling effectively
•A/C warning light illuminated on the dashboard

Diagnostic Steps

1
Check the refrigerant level using a manifold gauge set to determine if it is low.
2
Inspect A/C compressor operation by listening for engagement sounds and checking electrical connections.
3
Scan the vehicle's OBD-II system for any trouble codes related to the A/C system.
4
Inspect A/C fuses and relays for continuity and proper operation.
5
Verify the cabin air filter is clean and not obstructed.
6
Check for any visible leaks in hoses or components of the A/C system.

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

•Manifold gauge set
•Refrigerant canister
•Socket set
•Torque wrench
•Multimeter

Parts Required

•A/C compressor (if replacement is necessary)
•A/C refrigerant
•Fuses/relays as needed

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Diagnostic Steps

1
Check the refrigerant level using a manifold gauge set to determine if it is low.
2
Inspect A/C compressor operation by listening for engagement sounds and checking electrical connections.
3
Scan the vehicle's OBD-II system for any trouble codes related to the A/C system.
4
Inspect A/C fuses and relays for continuity and proper operation.
5
Verify the cabin air filter is clean and not obstructed.
6
Check for any visible leaks in hoses or components of the A/C system.

Solution

1. Preparation

Gather tools and parts.
Disconnect the battery to ensure safety while working on electrical components.
Ensure the vehicle is parked on a level surface and the engine is cool.

2. Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant canister
Connect the low-pressure gauge to the service port on the A/C system.
Check the current pressure; if low, attach the refrigerant canister to the low-pressure port.
Open the canister valve and allow refrigerant to flow until desired pressure is reached (usually 30-40 PSI for R-134a).
Disconnect the gauge set and reconnect the service port cap.

3. Inspect and Replace A/C Compressor

Tools Required: Socket set, torque wrench, A/C compressor replacement kit
Remove the serpentine belt from the A/C compressor by rotating the tensioner pulley counter-clockwise.
Disconnect electrical connectors and refrigerant lines from the A/C compressor (use line wrenches to avoid damaging fittings).
Remove the compressor mounting bolts and carefully extract the compressor from the engine bay.
Install the new compressor by reversing the removal steps. Ensure all connections are secure and torque bolts to manufacturer specifications.

4. Check and Replace Fuses/Relays

Tools Required: Multimeter
Locate the fuse box and identify the A/C related fuses and relays.
Use a multimeter to check for continuity. Replace any blown fuses or faulty relays with new ones.

5. Verify Operation

Reconnect the battery.
Start the vehicle and turn on the A/C to the maximum setting.
Observe the A/C compressor for engagement and check the temperature of air coming from the vents.