how to troubleshoot 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

714 words

Problem Statement

Learn how to troubleshoot and fix the AC not blowing cold air in Ford Explorer (2011-2019). Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

HVAC

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery for safety before starting repairs.
•Ensure the vehicle is parked on a level surface.

Symptoms

•AC system blowing warm air
•Weak airflow from vents
•Unusual noises from the AC compressor
•AC compressor not engaging
•Check engine light illuminated
•Foul smell from the vents

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any AC-related diagnostic trouble codes.
2
Inspect refrigerant levels using a manifold gauge set to determine if the system is low on refrigerant.
3
Check AC compressor operation by observing if the compressor clutch is engaging when the AC is turned on.
4
Examine fuses and relays related to the AC system for any blown fuses or malfunctioning relays.
5
Inspect the cabin air filter for clogs or dirt that could restrict airflow.
6
Check for leaks in the AC system by looking for oil stains around components or using a UV leak detection kit.

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
•Basic socket set
•UV leak detection kit
•Vacuum pump

Parts Required

•Refrigerant
•AC compressor
•Compressor oil

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to check for any AC-related diagnostic trouble codes.
2
Inspect refrigerant levels using a manifold gauge set to determine if the system is low on refrigerant.
3
Check AC compressor operation by observing if the compressor clutch is engaging when the AC is turned on.
4
Examine fuses and relays related to the AC system for any blown fuses or malfunctioning relays.
5
Inspect the cabin air filter for clogs or dirt that could restrict airflow.
6
Check for leaks in the AC system by looking for oil stains around components or using a UV leak detection kit.

Solution

1. Preparation

Tools Required:
- OBD-II scanner
- Manifold gauge set
- Basic socket set
- UV leak detection kit (if needed)
Ensure the vehicle is parked on a level surface and the engine is off. Disconnect the battery for safety.

2. Recharge Refrigerant

1. Determine Refrigerant Type: Confirm the type of refrigerant required (R-134a or R-1234yf) for the vehicle.
2. Connect Manifold Gauges: Attach the high and low side gauges to the AC service ports.
3. Check Pressure Readings: Note the pressure readings. If below the manufacturer's specifications, proceed to recharge.
4. Add Refrigerant: Following manufacturer instructions, add refrigerant until the pressures are within the acceptable range.
5. Disconnect Gauges: Remove the manifold gauges and replace the service port caps.

3. Replace AC Compressor (if faulty)

1. Remove Serpentine Belt: Use a socket to loosen the tensioner and remove the serpentine belt from the AC compressor pulley.
2. Disconnect Electrical Connector: Unplug the electrical connector from the AC compressor.
3. Remove AC Lines: Use a wrench to disconnect the refrigerant lines from the compressor. Ensure to capture any refrigerant that may leak.
4. Unbolt the Compressor: Remove the mounting bolts holding the compressor in place and carefully take it out.
5. Install New Compressor: Position the new compressor in place and secure it with bolts to the mounting brackets.
6. Reconnect Lines and Electrical: Reattach the refrigerant lines and the electrical connector to the new compressor.

4. Refill with Oil (if compressor replaced)

1. Add Compressor Oil: Check the new compressor for the required oil amount and add the correct type of oil if not pre-filled.
2. Evacuate AC System: Use a vacuum pump to evacuate the system for at least 30 minutes to remove any air and moisture.
3. Recharge with Refrigerant: Follow the previous steps to recharge the system with refrigerant.