how to troubleshoot my Ford F-150 13th Generation (2015-2020) AC not blowing cold air

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

631 words

Problem Statement

Learn how to troubleshoot and fix AC not blowing cold air in Ford F-150 (2015-2020). Step-by-step guide with 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 opening the AC system
•Wear safety goggles and gloves when handling refrigerant

Symptoms

•AC system blowing warm air
•Unusual noises from the AC compressor
•Visible leaks of refrigerant around AC components
•AC compressor not engaging
•Intermittent cooling or fluctuating temperature

Diagnostic Steps

1
Check the AC settings to ensure the system is set to the correct mode (e.g., 'Max AC' or 'Cool')
2
Inspect the refrigerant level using a manifold gauge set to see if it's low
3
Examine the AC compressor for any visible signs of damage or wear
4
Scan for error codes using an OBD-II scanner to identify any potential electronic issues
5
Inspect the AC condenser for blockages or debris that may obstruct airflow
6
Verify the operation of the AC blower motor and its settings

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
•Refrigerant (R-134a)
•Socket set
•Torque wrench
•AC compressor removal tool
•Refrigerant recovery machine

Parts Required

•Refrigerant (R-134a)
•AC compressor (if faulty)
•AC condenser (if blocked or damaged)

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Diagnostic Steps

1
Check the AC settings to ensure the system is set to the correct mode (e.g., 'Max AC' or 'Cool')
2
Inspect the refrigerant level using a manifold gauge set to see if it's low
3
Examine the AC compressor for any visible signs of damage or wear
4
Scan for error codes using an OBD-II scanner to identify any potential electronic issues
5
Inspect the AC condenser for blockages or debris that may obstruct airflow
6
Verify the operation of the AC blower motor and its settings

Solution

1. Preparation

Gather tools and parts needed for the repair.
Disconnect the battery to ensure safety while working on the 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 (R-134a), safety goggles, gloves.
Sub-steps:
1. Connect the low-pressure side of the manifold gauge to the AC system service port.
2. Start the engine and turn the AC to the maximum setting.
3. Check the pressure readings on the gauge; if low, add refrigerant until it reaches the manufacturer's specified level.
4. Monitor the system for any leaks during the recharge process.

3. Inspect and Replace AC Compressor (if necessary)

Tools Required: Socket set, torque wrench, AC compressor removal tool, refrigerant recovery machine (if the system is pressurized).
Sub-steps:
1. Recover refrigerant from the system using a recovery machine.
2. Remove the serpentine belt from the AC compressor.
3. Disconnect the electrical connector and refrigerant lines from the compressor.
4. Unbolt and remove the AC compressor from its mounting bracket.
5. Install the new AC compressor in reverse order, ensuring proper torque specifications on bolts.
6. Reconnect refrigerant lines and electrical connectors.

4. Replace AC Condenser (if blockage is found)

Tools Required: Socket set, pliers, safety goggles.
Sub-steps:
1. Remove the front grille and any components obstructing access to the condenser.
2. Disconnect the refrigerant lines and electrical connectors.
3. Unbolt the condenser from its mounting points and carefully remove it.
4. Install the new condenser, ensuring that all connections are secure.
5. Reinstall the front grille and any other components removed during this process.