why is my Ford Mustang S650 (2024-Present) AC blowing hot air after recharge?

Solution

1. Preparation

• Gather tools and materials: OBD-II scanner, manifold gauge set, basic hand tools, refrigerant, safety goggles, gloves.
• Disconnect the battery to ensure safety while working on the AC system.

2. Check Refrigerant Level

• Connect the manifold gauge set to the AC service ports.
• Assess the pressure readings against manufacturer specifications. A low reading may indicate a leak.

3. Locate and Repair Leaks

• Use leak detection dye or a UV light to find refrigerant leaks in the AC system.
• If a leak is found, replace the damaged component (e.g., hoses, seals, compressor).

4. Replace Cabin Air Filter (if necessary)

• Locate the cabin air filter housing, usually under the dashboard or behind the glove compartment.
• Remove the old filter and replace it with a new one, ensuring proper orientation.

5. Recharge the AC System

• If no leaks are detected and the system is low on refrigerant, recharge the AC using the correct type of refrigerant specified for your vehicle (usually R-134a or R-1234yf).
• Monitor the pressure while adding refrigerant to avoid overcharging.

6. Test the AC System

• Reconnect the battery.
• Start the vehicle and turn on the AC to the maximum setting.
• Check for cold air blowing from the vents and ensure the compressor is cycling correctly.