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

561 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 the battery before working on the AC electrical components.
•Handle refrigerants according to safety guidelines to avoid exposure.

Symptoms

•No cold air is coming from the vents
•AC compressor not engaging
•Unusual noises from the AC system
•Increased humidity inside the vehicle
•Foul odors when the AC is turned on

Diagnostic Steps

1
Check the AC settings to ensure it is set to the coldest setting with the recirculation mode activated.
2
Inspect the AC compressor to see if it is engaging when the AC is turned on.
3
Scan the vehicle's onboard diagnostic system for any error codes related to the AC system.
4
Check the refrigerant levels using a manifold gauge set to see if it is low.
5
Inspect all fuses related to the AC system for any blown fuses.
6
Examine the AC condenser for any visible damage or obstruction.

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

•Manifold gauge set
•Socket set
•Torque wrench
•Screwdrivers

Parts Required

•Refrigerant (R-134a or R-1234yf)
•AC compressor (if replacement is necessary)
•Cabin air filter (if replacement is necessary)

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Diagnostic Steps

1
Check the AC settings to ensure it is set to the coldest setting with the recirculation mode activated.
2
Inspect the AC compressor to see if it is engaging when the AC is turned on.
3
Scan the vehicle's onboard diagnostic system for any error codes related to the AC system.
4
Check the refrigerant levels using a manifold gauge set to see if it is low.
5
Inspect all fuses related to the AC system for any blown fuses.
6
Examine the AC condenser for any visible damage or obstruction.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is parked in a well-ventilated area.
Disconnect the battery to avoid any electrical issues.

2. Recharge Refrigerant

Tools Required: Manifold gauge set, refrigerant (R-134a or R-1234yf depending on model year).
Sub-steps:
1. Connect the low-pressure side of the manifold gauge to the AC service port.
2. Start the engine and turn on the AC to the maximum setting.
3. Check the pressure readings on the gauge. If low, proceed to add refrigerant.
4. Follow the manufacturer's specifications for the correct refrigerant type and amount.
5. Disconnect the manifold gauge and replace the service port cap.

3. Replace AC Compressor (if necessary)

Tools Required: Socket set, torque wrench, screwdrivers, AC compressor kit.
Sub-steps:
1. Remove the serpentine belt from the AC compressor.
2. Disconnect the electrical connector from the compressor.
3. Remove the refrigerant lines connected to the compressor (ensure to recover refrigerant if necessary).
4. Unbolt the AC compressor from its mounting brackets and remove it.
5. Install the new AC compressor, ensuring all bolts are torqued to the manufacturer's specifications.
6. Reconnect the refrigerant lines and electrical connector.

4. Check and Replace Cabin Air Filter (if needed)

Tools Required: Flathead screwdriver.
Sub-steps:
1. Locate the cabin air filter access panel (usually under the dashboard).
2. Remove the access panel using a flathead screwdriver.
3. Take out the old cabin air filter and inspect for dirt or debris.
4. Install the new cabin air filter, ensuring it is oriented correctly.
5. Reattach the access panel.