my Ford Explorer Fifth Generation (2011-2019) AC is not blowing cold air, what could be wrong?

Ford Explorer Fifth Generation (2011-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

545 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air 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 the electrical system
•Allow the engine to cool before opening any components

Symptoms

•AC compressor not engaging
•Warm air blowing from the vents
•Unusual noises from the AC system
•AC clutch not cycling
•Check AC warning message on the dashboard

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner
2
Inspect the AC compressor visually for signs of damage or leaks
3
Check refrigerant levels using a manifold gauge set
4
Test the AC clutch operation by applying direct power to the clutch
5
Inspect fuses and relays related to the AC system
6
Evaluate the cabin air filter for clogging

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
•Multimeter
•Socket set
•Screwdrivers

Parts Required

•Refrigerant (R-134a)
•AC compressor oil
•New cabin air filter

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner
2
Inspect the AC compressor visually for signs of damage or leaks
3
Check refrigerant levels using a manifold gauge set
4
Test the AC clutch operation by applying direct power to the clutch
5
Inspect fuses and relays related to the AC system
6
Evaluate the cabin air filter for clogging

Solution

1. Preparation

Gather Tools and Parts:
- Tools: OBD-II scanner, manifold gauge set, multimeter, socket set, screwdrivers
- Parts: Refrigerant (R-134a), AC compressor oil (if compressor replacement is needed), new cabin air filter (if necessary)
Safety Warning: Disconnect the battery before working on the electrical system.

2. Recharge Refrigerant

Locate the low-pressure service port on the AC system.
Connect the manifold gauge set to the low-pressure port.
Add refrigerant to the system as per manufacturer specifications, monitoring the pressure readings.
Disconnect the gauges and securely replace the service port cap.

3. Replace AC Compressor (if necessary)

Remove the drive belt by loosening the tensioner pulley using a socket and ratchet.
Disconnect electrical connectors from the AC compressor.
Remove refrigerant lines from the compressor (ensure to capture any residual refrigerant safely).
Unbolt the AC compressor from its mounting brackets and remove it from the engine bay.
Install the new compressor in reverse order, ensuring to use new O-rings and torque bolts to manufacturer specifications.

4. Check and Replace Cabin Air Filter

Locate the cabin air filter housing, usually found behind the glove box.
Remove the glove box by detaching the clips or screws.
Take out the old cabin air filter and inspect for dirt or blockage.
Install the new filter in the correct orientation and reassemble the glove box.