how do I know if the AC compressor is bad in my Ford Explorer Fifth Generation (2011-2019)?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

4 min read

606 words

Problem Statement

Learn how to diagnose and fix AC compressor issues in Ford Explorer (2011-2019). Step-by-step guide with symptoms, diagnostic steps, 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 components.
•Allow the engine to cool before performing any work around the AC system.

Symptoms

•Air conditioning is not blowing cold air
•Unusual noises (clanging, grinding) coming from the compressor
•AC clutch does not engage
•Increased cabin humidity
•Refrigerant leaks around the compressor area
•Frequent cycling of the AC system (turning on and off rapidly)

Diagnostic Steps

1
Inspect the AC system for visible signs of refrigerant leaks.
2
Use an OBD-II scanner to check for any related fault codes.
3
Verify the AC compressor clutch operation by observing the engagement when the AC is turned on.
4
Check the refrigerant levels using a pressure gauge to ensure they are within specifications.
5
Listen for unusual noises from the compressor while the AC is running.
6
Measure the temperature of the air coming from the vents when the AC is on.

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 manifold gauge set
•Multimeter
•Socket set
•Recovery machine (for refrigerant)

Parts Required

•AC compressor (if replacement is necessary)
•O-rings and seals for AC lines
•Refrigerant

Related Faults

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Diagnostic Steps

1
Inspect the AC system for visible signs of refrigerant leaks.
2
Use an OBD-II scanner to check for any related fault codes.
3
Verify the AC compressor clutch operation by observing the engagement when the AC is turned on.
4
Check the refrigerant levels using a pressure gauge to ensure they are within specifications.
5
Listen for unusual noises from the compressor while the AC is running.
6
Measure the temperature of the air coming from the vents when the AC is on.

Solution

1. Preparation

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

2. Inspect AC System Components

Visual Inspection: Check for any visible refrigerant leaks around the AC compressor and connections.
Pressure Check: Connect a refrigerant manifold gauge set to the service ports (high and low sides) of the AC system. Read pressures to assess if they are within the normal operating range.

3. AC Compressor Clutch Test

Clutch Engagement: With the engine running and the AC on, observe if the AC compressor clutch engages. If it does not, check the electrical connections and fuses related to the AC system.
Power Check: Using a multimeter, check for voltage at the AC compressor connector when the AC is activated. If there is no voltage, trace the wiring and check the AC relay.

4. Replace Compressor if Necessary

Remove the AC Compressor: If the compressor is confirmed faulty:
1. Recover refrigerant using a recovery machine.
2. Disconnect the electrical connector and AC lines from the compressor.
3. Unbolt and remove the compressor from its mounting bracket.
Install New Compressor:
1. Position the new compressor in place and secure it with bolts.
2. Reconnect the AC lines and electrical connector.

5. Recharge AC System

Use a refrigerant recovery machine to ensure the system is properly evacuated.
Recharge the system with the correct type and amount of refrigerant as specified in the vehicle's service manual.

6. Final Checks

Reconnect the negative battery terminal.
Start the engine, turn on the AC, and verify proper cooling performance.