my Ford Explorer Fifth Generation (2011-2019) AC not blowing cold air what should I check

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

533 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Ford Explorer (2011-2019). 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 checking refrigerant levels to avoid burns.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•Unusual noises from the AC system
•Increased cabin humidity
•Foul odor from vents
•AC system cycling on and off frequently

Diagnostic Steps

1
Inspect the AC system for any visible leaks or damage.
2
Check the refrigerant level using a pressure gauge.
3
Scan the vehicle’s onboard diagnostic system for any error codes related to the AC.
4
Verify the operation of the AC compressor clutch by observing its engagement.
5
Test the AC system’s relay and fuses for continuity.
6
Inspect the cabin air filter for clogs or restrictions.

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

•Safety glasses
•Gloves
•Refrigerant pressure gauge
•Multimeter

Parts Required

•R-134a refrigerant
•Cabin air filter
•AC relay (if faulty)

Related Faults

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Diagnostic Steps

1
Inspect the AC system for any visible leaks or damage.
2
Check the refrigerant level using a pressure gauge.
3
Scan the vehicle’s onboard diagnostic system for any error codes related to the AC.
4
Verify the operation of the AC compressor clutch by observing its engagement.
5
Test the AC system’s relay and fuses for continuity.
6
Inspect the cabin air filter for clogs or restrictions.

Solution

1. Preparation

Tools Required: Safety glasses, gloves, refrigerant pressure gauge, multimeter.
Ensure the vehicle is parked on a level surface with the engine off.
Wear safety glasses and gloves for protection.

2. Check Refrigerant Level

Connect the refrigerant pressure gauge to the low-pressure service port.
Read the gauge to determine the refrigerant level.
If low, add the appropriate type of refrigerant (R-134a for this model) according to the manufacturer's specifications.

3. Inspect AC Compressor

Locate the AC compressor, typically found near the front of the engine.
Inspect the compressor for any physical damage or leaks.
Start the engine and turn on the AC to check if the compressor clutch engages. If not, check the electrical connection and voltage with a multimeter.

4. Replace Cabin Air Filter (if necessary)

Locate the cabin air filter housing, usually behind the glove box.
Remove the glove box to access the filter.
Slide out the old air filter and replace it with a new one, ensuring proper orientation.

5. Test and Replace AC Relay/Fuses

Locate the fuse box under the hood and inside the cabin.
Use a multimeter to test the AC relay for continuity.
Replace any blown fuses or faulty relays with new ones that match the specifications.

6. Conduct System Leak Test

If refrigerant was added, use a UV dye and blacklight to check for leaks in the AC system.
If leaks are found, repair or replace the damaged components as necessary.