why does my Ford Explorer AC not blow cold air anymore

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

528 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Ford Explorer. 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 battery before working on electrical systems.
•Wear safety goggles and gloves when handling refrigerant.

Symptoms

•AC compressor not engaging
•Warm air blowing from vents
•Unusual noises from the AC unit
•Increased humidity inside the vehicle
•AC system running but not cooling

Diagnostic Steps

1
Check the AC settings to ensure the system is set to 'Max AC' and the temperature is set to the lowest setting.
2
Inspect the AC compressor for any visible damage or leaks.
3
Use an OBD-II scanner to check for any error codes related to the AC system.
4
Check the refrigerant level using a manifold gauge set.
5
Inspect the AC fuse and relay for continuity and proper function.
6
Examine the cabin air filter for clogs that could restrict airflow.

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

Parts Required

•Refrigerant
•AC compressor (if faulty)
•AC relay and fuse (if necessary)

Related Faults

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Diagnostic Steps

1
Check the AC settings to ensure the system is set to 'Max AC' and the temperature is set to the lowest setting.
2
Inspect the AC compressor for any visible damage or leaks.
3
Use an OBD-II scanner to check for any error codes related to the AC system.
4
Check the refrigerant level using a manifold gauge set.
5
Inspect the AC fuse and relay for continuity and proper function.
6
Examine the cabin air filter for clogs that could restrict airflow.

Solution

1. Preparation

Gather tools and parts required for the repair.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery to avoid any electrical shorts.

2. Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant can, safety goggles, gloves.
Attach the manifold gauge set to the low and high-pressure service ports of the AC system.
Check the readings against the manufacturer's specifications.
If the refrigerant is low, connect the refrigerant can to the low-pressure side and open the valve to recharge the system.
Monitor the pressure gauge to avoid overcharging.

3. Replace AC Compressor (if necessary)

Tools Required: Socket set, wrenches, torque wrench, AC compressor replacement.
Disconnect the electrical connectors from the AC compressor.
Remove the serpentine belt from the compressor pulley.
Unbolt the AC compressor from its mount, taking care to collect any washers or spacers.
Install the new compressor, ensuring it is properly aligned and bolted down to the manufacturer’s torque specifications.

4. Inspect and Replace AC Relay/Fuse (if necessary)

Tools Required: Multimeter, replacement relay/fuse.
Locate the AC relay and fuse in the fuse box.
Use a multimeter to check for continuity in the relay and fuse.
Replace any faulty components with the correct specifications.