how to troubleshoot Ford F-150 13th Generation (2015-2020) AC not blowing cold air

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

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

596 words

Problem Statement

Learn how to troubleshoot and fix AC not blowing cold air in Ford F-150 13th Generation. Step-by-step guide with diagnostic 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
•Wear safety goggles

Symptoms

•AC system blows warm air
•Strange noises when the AC is turned on
•AC compressor not engaging
•Reduced airflow from the vents
•AC system cycling on and off frequently
•Unpleasant odors coming from the vents

Diagnostic Steps

1
Check the AC settings to ensure it's set to the coldest temperature and the correct mode (e.g., vent, dash)
2
Inspect the AC system for any visible leaks or damage, particularly around hoses and connections
3
Use an OBD-II scanner to check for any error codes related to the climate control system
4
Verify the AC compressor is engaging by listening for the clutch to engage when the AC is turned on
5
Check the refrigerant level using a manifold gauge set to ensure it is within the manufacturer's specifications
6
Inspect the cabin air filter for clogs or obstructions and replace if necessary

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 hand tools (screwdrivers, wrenches)
•Flashlight

Parts Required

•Refrigerant (R-134a or as specified)
•AC compressor (if needed)
•Cabin air filter

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Diagnostic Steps

1
Check the AC settings to ensure it's set to the coldest temperature and the correct mode (e.g., vent, dash)
2
Inspect the AC system for any visible leaks or damage, particularly around hoses and connections
3
Use an OBD-II scanner to check for any error codes related to the climate control system
4
Verify the AC compressor is engaging by listening for the clutch to engage when the AC is turned on
5
Check the refrigerant level using a manifold gauge set to ensure it is within the manufacturer's specifications
6
Inspect the cabin air filter for clogs or obstructions and replace if necessary

Solution

1. Preparation

Tools Required: OBD-II scanner, manifold gauge set, basic hand tools (screwdrivers, wrenches), flashlight.
Safety Warnings: Disconnect the battery before working on electrical components. Wear safety goggles.

2. Recharge Refrigerant

Sub-steps:
1. Connect the manifold gauge set to the service ports on the AC system (high and low side).
2. Read the gauge pressures; if low, proceed to recharge.
3. Attach the refrigerant canister to the low-pressure side fitting.
4. Open the canister valve and allow refrigerant to flow into the system while monitoring the gauge.
5. Once the correct pressure is achieved, close the canister valve and disconnect the gauge set.

3. Inspect and Replace AC Compressor (if necessary)

Sub-steps:
1. Remove any components obstructing access to the AC compressor (e.g., belts, brackets).
2. Disconnect the electrical connector from the compressor.
3. Remove the refrigerant lines from the compressor using appropriate wrenches.
4. Unbolt the compressor from its mounting bracket and remove it from the vehicle.
5. Install the new compressor by reversing the removal process, ensuring all bolts are torqued to specifications.

4. Replace Cabin Air Filter

Sub-steps:
1. Locate the cabin air filter housing (usually behind the glove box).
2. Remove the glove box if necessary to access the filter.
3. Pull out the old cabin air filter and inspect for dirt or blockages.
4. Install a new cabin air filter, ensuring it is oriented correctly as per the airflow direction indicated.