Ford Explorer Fifth Generation (2011-2019) AC not blowing cold air

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

579 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Ford Explorer (2011-2019). Step-by-step guide with diagnostic procedures 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.
•Wear safety goggles and gloves when handling refrigerants and working under the hood.

Symptoms

•AC blows warm air instead of cold
•Unusual noises when the AC is turned on
•AC compressor not engaging
•Increased humidity inside the vehicle
•Frost or ice formation on the AC lines
•AC system cycling on and off frequently

Diagnostic Steps

1
Check the AC system for visible leaks around hoses and connections.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC compressor for proper operation and engagement.
4
Check the refrigerant level using a manifold gauge set.
5
Test the AC relay and fuses related to the AC system.
6
Inspect the cabin air filter for blockages and replace if necessary.

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
•Multimeter
•Socket set
•Torque wrench
•Refrigerant recovery machine

Parts Required

•AC compressor
•AC relay/fuses
•Refrigerant (R-134a)
•Cabin air filter

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Diagnostic Steps

1
Check the AC system for visible leaks around hoses and connections.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC compressor for proper operation and engagement.
4
Check the refrigerant level using a manifold gauge set.
5
Test the AC relay and fuses related to the AC system.
6
Inspect the cabin air filter for blockages and replace if necessary.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is off.
Disconnect the battery to avoid electrical issues during repairs.

2. Check and Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant (R-134a), safety goggles, gloves.
Connect the manifold gauge set to the low and high-pressure ports.
Start the engine and turn on the AC at maximum settings.
Read the pressure values; if low, proceed to recharge.
Add refrigerant until the desired pressure is reached (typically 30-40 psi on the low side).
Monitor the system to ensure proper cooling.

3. Inspect and Replace AC Compressor

Tools Required: Socket set, torque wrench, AC compressor replacement.
Disconnect the battery again.
Remove the serpentine belt by releasing tension with a wrench.
Disconnect the electrical connector from the AC compressor.
Remove the AC lines from the compressor, capturing any refrigerant in a recovery machine.
Unbolt and remove the AC compressor from the mounting brackets.
Install the new compressor, ensuring proper alignment and securing with bolts to the manufacturer-specified torque.
Reconnect the AC lines and electrical connector.

4. Check and Replace AC Relay/Fuses

Tools Required: Multimeter, socket set.
Locate the fuse box and identify the AC relay and associated fuses.
Use a multimeter to test the continuity of the AC relay and fuses.
Replace any faulty components with new ones of the same rating.