why is my Ford Explorer Sixth Generation (2020-present) AC not blowing cold air

Ford Explorer Sixth Generation (2020-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

550 words

Problem Statement

Learn how to diagnose and fix the AC not blowing cold air in a Ford Explorer. 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 components.
•Handle refrigerants with care and according to environmental regulations.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•AC system making unusual noises (hissing, clicking)
•Decreased airflow from AC vents
•Dashboard warning lights related to HVAC system

Diagnostic Steps

1
Check the AC settings to ensure it is set to 'Max AC' and the temperature is set to the coldest setting.
2
Inspect the AC refrigerant level using a pressure gauge to determine if it is low.
3
Scan the vehicle's ECU for any error codes related to the AC system using an OBD-II scanner.
4
Visually inspect the AC compressor for signs of damage or leaks.
5
Check the AC fuse and relay to ensure they are functioning correctly.
6
Test the AC pressure switch to confirm it is operating properly.

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
•AC pressure gauge set
•Socket set
•Torque wrench
•Refrigerant canister (R-134a or R-1234yf based on vehicle specifications)

Parts Required

•AC refrigerant (specific type based on vehicle)
•AC compressor (if replacement is necessary)
•AC O-rings or seals (if applicable)

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Diagnostic Steps

1
Check the AC settings to ensure it is set to 'Max AC' and the temperature is set to the coldest setting.
2
Inspect the AC refrigerant level using a pressure gauge to determine if it is low.
3
Scan the vehicle's ECU for any error codes related to the AC system using an OBD-II scanner.
4
Visually inspect the AC compressor for signs of damage or leaks.
5
Check the AC fuse and relay to ensure they are functioning correctly.
6
Test the AC pressure switch to confirm it is operating properly.

Solution

1. Preparation

Gather tools and parts required for the repair.
Disconnect the vehicle's battery to ensure safety while working on electrical components.

2. Recharge AC System

Connect AC Refrigerant Canister
- Attach the low-pressure side refrigerant gauge to the service port.
- Ensure the canister is upright and punctured properly.
Add Refrigerant
- Start the vehicle and turn on the AC to maximum.
- Slowly open the valve on the refrigerant canister and monitor the pressure gauge.
- Add refrigerant until the gauge indicates the proper level (usually between 30-40 PSI depending on ambient temperature).

3. Replace AC Compressor

Remove the Old Compressor
- Disconnect the electrical connector from the compressor.
- Remove the serpentine belt using a socket wrench.
- Unbolt the compressor from its mounting brackets using appropriate socket sizes.
- Carefully detach the refrigerant lines (ensure to catch any residual refrigerant in a recovery tank).
Install the New Compressor
- Position the new compressor in place and secure it with bolts, torquing them to manufacturer specifications.
- Reconnect the refrigerant lines and the electrical connector.
- Reinstall the serpentine belt, ensuring it is correctly routed.

4. Check and Test System

Reconnect Battery
- Reconnect the battery terminals securely.
Test AC Operation
- Start the vehicle and run the AC on maximum.
- Monitor for cold air and check for any unusual noises.