why does my 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

4 min read

629 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 opening the hood or working near the radiator.

Symptoms

•AC blows warm air instead of cold
•Unusual noises from the AC compressor
•AC system cycles on and off frequently
•Increased humidity inside the vehicle
•Poor airflow from the AC vents

Diagnostic Steps

1
Check the AC system for any visible leaks, especially around hoses and the compressor.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Measure the refrigerant pressure with a manifold gauge set to determine if levels are adequate.
4
Inspect the AC compressor for proper operation and listen for any unusual noises.
5
Check the cabin air filter for clogs that could restrict airflow.
6
Test the AC control module and electrical connections for any faults.

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
•Screwdriver or trim removal tool
•Wrench set

Parts Required

•AC refrigerant (R-134a)
•Cabin air filter
•AC compressor (if required)

Related Faults

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Diagnostic Steps

1
Check the AC system for any visible leaks, especially around hoses and the compressor.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Measure the refrigerant pressure with a manifold gauge set to determine if levels are adequate.
4
Inspect the AC compressor for proper operation and listen for any unusual noises.
5
Check the cabin air filter for clogs that could restrict airflow.
6
Test the AC control module and electrical connections for any faults.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on the electrical components.
Allow the engine to cool down if it has been running.

2. Inspect and Repair Refrigerant Leaks

Tools Required: Manifold gauge set, refrigerant, leak detection dye (if needed).
Sub-steps:
1. Connect the manifold gauge set to the AC service ports.
2. Check the pressure readings; if low, locate leaks using the dye or soap solution.
3. Repair any identified leaks by replacing faulty hoses or seals.
4. Recharge the AC system with the appropriate type and amount of refrigerant (R-134a).

3. Replace the Cabin Air Filter

Tools Required: Screwdriver or trim removal tool.
Sub-steps:
1. Locate the cabin air filter compartment, usually found behind the glove box.
2. Remove the glove box or access cover to reach the filter.
3. Remove the old filter and clean the compartment.
4. Install the new cabin air filter, ensuring proper orientation.

4. Inspect and Replace AC Compressor (if needed)

Tools Required: Socket set, wrench set, AC compressor replacement.
Sub-steps:
1. Disconnect the electrical connector from the compressor.
2. Remove the drive belt by loosening the tensioner pulley.
3. Unbolt the compressor from its mounting brackets and remove the refrigerant lines (ensure proper recovery of refrigerant).
4. Install the new compressor and connect refrigerant lines securely.
5. Reinstall the drive belt and reconnect the electrical connector.

5. Check and Reset AC Control Module

Tools Required: OBD-II scanner.
Sub-steps:
1. Connect the OBD-II scanner to the vehicle's diagnostic port.
2. Check for any fault codes related to the AC control module.
3. Clear any codes and test the AC system operation.
4. If issues persist, consider replacing the AC control module.