why does my Ford Explorer Fifth Generation (2011-2019) AC blow warm air

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

531 words

Problem Statement

Complete guide to fixing AC that blows warm air in Ford Explorer 2011-2019. Includes symptoms, diagnostic steps, tools required, and repair procedures.

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.

Symptoms

•AC system blowing warm air
•Unusual noises from the AC compressor
•AC compressor not engaging
•Moisture or refrigerant leaks under the vehicle
•Fluctuating temperature from the vents
•AC system not cooling effectively at idle

Diagnostic Steps

1
Check the AC settings to ensure the system is set to 'MAX' or 'AC' mode.
2
Scan for error codes using an OBD-II scanner to check for any AC-related faults.
3
Inspect the AC compressor visually for signs of damage or wear.
4
Check the refrigerant level using a manifold gauge set to determine if it is low.
5
Look for any visible leaks in the AC lines or components.
6
Test the AC relay and fuses to ensure they are functioning correctly.

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
•Refrigerant canister

Parts Required

•Refrigerant (R-134a)
•AC compressor (if replacement is necessary)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the AC settings to ensure the system is set to 'MAX' or 'AC' mode.
2
Scan for error codes using an OBD-II scanner to check for any AC-related faults.
3
Inspect the AC compressor visually for signs of damage or wear.
4
Check the refrigerant level using a manifold gauge set to determine if it is low.
5
Look for any visible leaks in the AC lines or components.
6
Test the AC relay and fuses to ensure they are functioning correctly.

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 shorts.

2. Check Refrigerant Levels

Tools Required: Manifold gauge set, refrigerant (if needed).
Connect the manifold gauge set to the low and high-pressure service ports of the AC system.
Read the pressure levels; if they are below the manufacturer's specifications, proceed to recharge the system.

3. Recharge AC System

Tools Required: Refrigerant canister, manifold gauge set.
Attach the refrigerant can to the manifold gauge set and open the valve to allow refrigerant into the system.
Monitor the pressure gauge while adding refrigerant until it reaches the correct level.
Disconnect the manifold gauge set and ensure no leaks are present.

4. Inspect and Replace AC Compressor (if necessary)

Tools Required: Socket set, torque wrench, AC compressor replacement.
Remove the serpentine belt from the AC compressor.
Disconnect electrical connectors and refrigerant lines from the compressor.
Remove the mounting bolts securing the AC compressor and take it out.
Install the new compressor by reversing the removal steps and torque the bolts to manufacturer specifications.

5. Test the System

Reconnect the battery and start the engine.
Set the AC to the maximum setting and monitor the air temperature.
Check for any unusual noises or leaks.