why does my Ford Explorer AC blow warm air

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

534 words

Problem Statement

Complete guide to fixing AC that blows warm air in Ford Explorer. 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

•Always wear safety goggles and gloves when working with refrigerants.
•Ensure the engine is off before disconnecting any electrical components.

Symptoms

•Warm air blowing from the AC vents
•AC compressor not engaging
•Unusual noises from the AC system
•Condenser or evaporator freezing
•Poor airflow from the vents
•AC system cycling on and off rapidly

Diagnostic Steps

1
Check the AC system for any visible leaks or damage to components.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC refrigerant level to determine if it is low.
4
Test the AC compressor operation to see if it engages when the AC is turned on.
5
Verify the function of the AC control module and the climate control settings.
6
Examine the cabin air filter for blockages 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
•Refrigerant gauge set
•Socket set
•Torque wrench
•Multimeter

Parts Required

•Refrigerant (R-134a)
•AC compressor (if faulty)
•Cabin air filter

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 system for any visible leaks or damage to components.
2
Use an OBD-II scanner to check for any related error codes.
3
Inspect the AC refrigerant level to determine if it is low.
4
Test the AC compressor operation to see if it engages when the AC is turned on.
5
Verify the function of the AC control module and the climate control settings.
6
Examine the cabin air filter for blockages that could restrict airflow.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and the ignition is off.
Disconnect the battery to prevent electrical shock.

2. Inspect and Recharge Refrigerant

Tools Required: Refrigerant gauge set, can of refrigerant (R-134a).
Locate the low-pressure service port on the AC system.
Connect the refrigerant gauge set to the low-pressure port.
Check the pressure readings; if the pressure is low, proceed to recharge the system.
Sub-steps:
- Start the engine and turn the AC to maximum cold.
- Slowly add refrigerant until the pressure reaches the manufacturer's recommended level.
- Disconnect the gauge set and securely cap the service port.

3. Replace Faulty Components

Tools Required: Socket set, torque wrench.
If the compressor is not engaging, test the compressor clutch with a multimeter.
If faulty, remove the old compressor:
- Drain the refrigerant from the system (professional service may be needed).
- Disconnect electrical connectors and remove mounting bolts.
- Install the new compressor in reverse order, ensuring proper torque specifications on bolts.
- Reconnect the refrigerant lines and electrical connectors.

4. Check and Replace Cabin Air Filter

Tools Required: None.
Locate the cabin air filter access panel (usually under the dashboard or behind the glove box).
Remove the old filter and inspect for dirt or blockages.
Replace with a new cabin air filter, ensuring proper orientation.