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

560 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.
•Properly recover refrigerant from the AC system before servicing to avoid environmental hazards.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•Unusual noises from the AC compressor
•AC system cycling on and off frequently
•Condensate water not draining properly
•Visible refrigerant leaks under the vehicle

Diagnostic Steps

1
Check the AC system pressure using a manifold gauge set.
2
Inspect the AC fuse and relay for faults.
3
Examine the AC compressor for signs of wear or damage.
4
Look for visible refrigerant leaks around hoses and connections.
5
Test the AC control module and climate control settings.
6
Verify the cabin air filter is clean and unobstructed.

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
•Multimeter
•Socket set
•Torque wrench
•UV leak detection kit

Parts Required

•AC compressor (if faulty)
•AC fuse/relay (if needed)
•Refrigerant (R-134a)
•O-rings and seals (if replacing components)

Related Faults

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Diagnostic Steps

1
Check the AC system pressure using a manifold gauge set.
2
Inspect the AC fuse and relay for faults.
3
Examine the AC compressor for signs of wear or damage.
4
Look for visible refrigerant leaks around hoses and connections.
5
Test the AC control module and climate control settings.
6
Verify the cabin air filter is clean and unobstructed.

Solution

1. Preparation

Gather all necessary tools and replacement parts.
Disconnect the negative battery cable to ensure safety.
Ensure the vehicle is parked on a level surface with the engine off.

2. Inspect and Replace AC Fuse/Relay

Locate the fuse box under the dashboard and the engine compartment.
Remove the cover and identify the AC fuse using the diagram.
Use a multimeter to test the fuse continuity; replace if blown.
Check the relay by swapping it with a similar relay; replace if malfunctioning.

3. Recharge the AC System

Attach the manifold gauge set to the high and low side service ports.
Start the engine and turn the AC to the maximum setting.
Read the pressure; if low, proceed to recharge the system with the appropriate refrigerant (R-134a).
Follow the manufacturer's specifications for the correct refrigerant amount.

4. Inspect and Replace AC Compressor

If the compressor is not engaging, disconnect the electrical connector.
Use a multimeter to check for power at the compressor; if no power, trace the circuit.
If the compressor is faulty, remove it by loosening the mounting bolts and disconnecting the refrigerant lines (ensure to recover refrigerant properly).
Install the new compressor, tightening bolts to manufacturer specifications and reconnecting lines.

5. Check for Refrigerant Leaks

Use a UV dye and a black light to inspect for leaks in the AC system.
If leaks are found, replace the faulty components (hoses, seals, or evaporator).
Recharge the system once the repairs are made.