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my Ford F-150 AC is not blowing cold air anymore, what's wrong? - Ford F-150
Home/Cars/Ford/F-150/13th Generation (2015-2020)/my Ford F-150 AC is not blowing cold air anymore, what's wrong?

my Ford F-150 AC is not blowing cold air anymore, what's wrong?

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

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
527 words

Problem Statement

Learn how to diagnose and fix AC not blowing cold air in Ford F-150. 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 the electrical system.
  • •Wear safety goggles when handling refrigerants.

Symptoms

  • •AC compressor does not engage
  • •Warm air blowing from vents
  • •Unusual noises when AC is turned on
  • •AC system cycles on and off rapidly
  • •Visible refrigerant leaks under the vehicle

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

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
  • •Safety goggles
  • •Gloves

Parts Required

  • •Refrigerant (R-134a or R-1234yf)
  • •AC compressor (if applicable)
  • •AC relay (if applicable)

Additional Information

Affected Component
HVAC
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
3 items

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Solution
1. Preparation
  • Tools Required: OBD-II scanner, manifold gauge set, multimeter, socket set, safety goggles, gloves.
  • Safety Warnings: Disconnect the battery before working on the electrical system and wear safety goggles when handling refrigerants.
2. Recharge Refrigerant
  1. Connect the manifold gauge set to the low-pressure port of the AC system.
  2. Check the pressure readings; if low, proceed to recharge.
  3. Add the appropriate refrigerant (R-134a or R-1234yf, depending on the vehicle's model year) according to the manufacturer’s specifications.
  4. Monitor pressure as you add refrigerant to avoid overcharging.
3. Replace AC Compressor (if necessary)
  1. Disconnect the negative battery terminal.
  2. Remove any components obstructing access to the AC compressor (e.g., air intake duct).
  3. Disconnect electrical connectors from the AC compressor.
  4. Remove the refrigerant lines connected to the compressor using a wrench.
  5. Unbolt the compressor from its mounting bracket and remove it.
  6. Install the new compressor by reversing the removal steps, ensuring all connections are secure.
4. Replace AC Relay (if necessary)
  1. Locate the AC relay in the fuse box.
  2. Remove the relay by pulling it straight out.
  3. Insert the new relay in the same position.
  4. Test the AC system to ensure proper operation.