why is my Ford F-150 13th Generation (2015-2020) AC not blowing cold air anymore

Ford F-150 13th Generation (2015-2020)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

588 words

Problem Statement

Learn how to diagnose and fix AC issues in Ford F-150 13th Generation. 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 systems.
•Allow the engine to cool before opening any components related to the AC system.

Symptoms

•No cold air output from the AC vents
•AC compressor not engaging
•Unusual noises from the AC unit when activated
•Reduced airflow from the vents
•Foul odors coming from the AC system
•Increase in engine temperature during operation

Diagnostic Steps

1
Check the AC system for any visible signs of leaks, particularly around the compressor and hoses.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC refrigerant levels using a refrigerant gauge.
4
Verify the AC compressor operation by listening for it engaging when the AC is turned on.
5
Check the AC relay and fuse for continuity using a multimeter.
6
Inspect the cabin air filter for blockage or dirt accumulation.

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 gauge
•Socket set
•Torque wrench
•Multimeter

Parts Required

•AC refrigerant (R-134a)
•AC compressor (if needed)
•Cabin air filter

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the AC system for any visible signs of leaks, particularly around the compressor and hoses.
2
Use an OBD-II scanner to check for any error codes related to the AC system.
3
Inspect the AC refrigerant levels using a refrigerant gauge.
4
Verify the AC compressor operation by listening for it engaging when the AC is turned on.
5
Check the AC relay and fuse for continuity using a multimeter.
6
Inspect the cabin air filter for blockage or dirt accumulation.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface with the engine off.
Disconnect the battery to prevent any electrical shorts.

2. Check and Recharge Refrigerant

Tools Required: Refrigerant gauge, AC refrigerant
Sub-steps:
1. Connect the refrigerant gauge to the service port on the low-pressure side of the AC system.
2. Read the pressure on the gauge; if it's low, proceed to recharge.
3. Add refrigerant according to the manufacturer's specifications (usually R-134a), ensuring not to overfill.

3. Inspect and Replace the AC Compressor

Tools Required: Socket set, torque wrench, AC compressor replacement, o-rings
Sub-steps:
1. Remove the serpentine belt by loosening the tensioner.
2. Disconnect the wiring harness from the AC compressor.
3. Remove the AC lines from the compressor (use caution and a container to catch any refrigerant).
4. Unbolt the AC compressor from its mounting bracket and remove it.
5. Install the new compressor, ensuring new o-rings are used and tightened to manufacturer torque specifications.

4. Replace Cabin Air Filter

Tools Required: None
Sub-steps:
1. Locate the cabin air filter access panel, usually behind the glove compartment.
2. Remove the access panel and take out the old cabin air filter.
3. Install the new cabin air filter in the correct orientation as indicated.

5. Reconnect Battery and Test System

Sub-steps:
1. Reconnect the battery terminals.
2. Start the vehicle and turn on the AC to the maximum setting.
3. Monitor the system for cold air output and check for any unusual noises.