why is my Ford Explorer's AC not blowing cold air anymore

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

567 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.
•Allow the engine to cool before working on the AC components.

Symptoms

•Warm air is blowing from the AC vents
•AC compressor not engaging
•Strange noises coming from the AC system
•AC clutch not cycling
•Refrigerant leaks observed under the vehicle
•Reduced airflow from the vents

Diagnostic Steps

1
Check the AC settings on the climate control panel to ensure it is set to the coldest setting.
2
Inspect the AC compressor visually for signs of damage or leaks.
3
Use an OBD-II scanner to check for any related error codes that may indicate AC system problems.
4
Measure the refrigerant pressure using a manifold gauge set to ensure it is within the specified range.
5
Inspect the electrical connections to the AC compressor and fuses for any signs of failure.
6
Check 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
•Socket set
•Torque wrench
•Multimeter

Parts Required

•R-134a refrigerant
•AC compressor (if required)
•AC relay or fuses (if required)

Related Faults

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Diagnostic Steps

1
Check the AC settings on the climate control panel to ensure it is set to the coldest setting.
2
Inspect the AC compressor visually for signs of damage or leaks.
3
Use an OBD-II scanner to check for any related error codes that may indicate AC system problems.
4
Measure the refrigerant pressure using a manifold gauge set to ensure it is within the specified range.
5
Inspect the electrical connections to the AC compressor and fuses for any signs of failure.
6
Check 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 and the engine is turned off.
Disconnect the battery to prevent any electrical issues.

2. Inspect and Replace Refrigerant

Tools Required: Manifold gauge set, refrigerant (R-134a or as specified).
Check the refrigerant level using the manifold gauge set.
If refrigerant is low, locate the service ports, connect the manifold gauge set, and add refrigerant until the correct pressure is achieved.
Monitor the pressure readings and ensure they fall within the manufacturer's specifications.

3. Repair or Replace AC Compressor

Tools Required: Socket set, torque wrench, AC compressor replacement kit.
If the AC compressor is found to be defective, remove the drive belt by releasing tension from the tensioner.
Disconnect the electrical connector and refrigerant lines from the compressor.
Remove the mounting bolts and take out the old compressor.
Install the new compressor by reversing the removal process, ensuring all connections are secure and properly torqued.

4. Inspect Electrical Components

Tools Required: Multimeter.
Check the AC relay and fuses for continuity using a multimeter.
Replace any faulty components as needed.

5. Reconnect Battery and Test

Reconnect the battery and start the engine.
Turn on the AC to the maximum setting and monitor for cold air output.