why does my Ford Explorer AC only blow hot air

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

504 words

Problem Statement

Learn how to diagnose and fix AC that blows hot 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 electrical systems.
•Allow the engine to cool before opening any components.

Symptoms

•AC system not cooling air
•Warm air blowing from the vents
•Inconsistent temperature control
•AC compressor not engaging
•Unusual noises from the AC system

Diagnostic Steps

1
Check the AC refrigerant level using a pressure gauge.
2
Inspect the AC compressor for signs of damage or wear.
3
Scan for any fault codes with an OBD-II scanner.
4
Examine the AC control module and settings for proper operation.
5
Look for leaks in the AC system components, including hoses and connections.
6
Test the blower motor and ensure it is functioning properly.

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

•AC pressure gauge
•Refrigerant canister
•Socket set
•Torque wrench

Parts Required

•AC compressor (if faulty)
•Expansion valve (if necessary)
•O-rings

Related Faults

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Diagnostic Steps

1
Check the AC refrigerant level using a pressure gauge.
2
Inspect the AC compressor for signs of damage or wear.
3
Scan for any fault codes with an OBD-II scanner.
4
Examine the AC control module and settings for proper operation.
5
Look for leaks in the AC system components, including hoses and connections.
6
Test the blower motor and ensure it is functioning properly.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to ensure safety during repairs.
Allow the engine to cool before beginning any work.

2. Check and Recharge Refrigerant

Tools Required: AC pressure gauge, refrigerant canister
Use the AC pressure gauge to check the refrigerant levels.
If levels are low, connect the refrigerant canister to the low-pressure service port.
Fill the system according to the manufacturer's specifications until the pressure is within the normal range.

3. Inspect AC Compressor

Tools Required: Socket set, torque wrench
Remove any covers obstructing access to the AC compressor.
Check the compressor for any visual signs of damage or leaks.
Ensure the compressor clutch engages when the AC is turned on. If not, check electrical connections and fuses.
Tighten any loose bolts to manufacturer torque specifications.

4. Replace Faulty Components

Parts Required: AC compressor (if faulty), expansion valve (if necessary), O-rings
If the compressor is damaged, disconnect refrigerant lines and electrical connectors.
Remove the old compressor and replace it with a new one, ensuring to replace O-rings.
Reassemble all connections securely and recharge the AC system.

5. Test the System

Reconnect the vehicle battery.
Start the engine and turn on the AC to verify operation.
Monitor for cold air blowing from the vents and check for any leaks.