my Ford F-150 Fourteenth Generation (2021-present) is stalling when I come to a stop what could be t...

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the battery to ensure safety.
• Allow the engine to cool if it has been running.

2. Clean the Throttle Body

• Remove the air intake duct to access the throttle body.
• Use throttle body cleaner and a soft brush to clean the throttle plate and surrounding areas.
• Reinstall the air intake duct securely.

3. Replace the Idle Air Control Valve (if faulty)

• Locate the IAC valve, usually mounted on the throttle body.
• Disconnect the electrical connector and remove the mounting screws.
• Install the new IAC valve and reconnect the electrical connector.
• Clear any error codes using the OBD-II scanner.

4. Fuel Pressure Inspection and Repair

• Attach a fuel pressure gauge to the fuel rail.
• Start the engine and observe the pressure reading; it should match the specifications in the service manual.
• Replace the fuel filter if pressure is low or inconsistent.
• Inspect the fuel pump and replace it if necessary.

5. Check and Repair Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Replace any damaged hoses with OEM or suitable aftermarket parts.
• Perform a smoke test to identify any hard-to-find leaks.