why does my Ford F-150 14th Generation (2021-2024) keep losing power when driving

Solution

1. Preparation

• Tools Required: OBD-II scanner, fuel pressure gauge, multimeter, socket set, torque wrench.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect Battery and Charging System

• Sub-steps:
  1. Use a multimeter to check the battery voltage; it should be approximately 12.6 volts when fully charged.
  2. Start the engine and check the voltage at the battery again; it should rise to about 13.7-14.7 volts, indicating the alternator is functioning correctly.
  3. Clean any corroded terminals and ensure tight connections.

3. Check Fuel System

• Sub-steps:
  1. Connect the fuel pressure gauge to the fuel rail test port.
  2. With the ignition on (engine off), check that the fuel pressure matches the manufacturer’s specifications (typically around 30-45 psi for F-150).
  3. If pressure is low, inspect the fuel pump, filter, and lines for clogs or damage.

4. Inspect Air Intake System

• Sub-steps:
  1. Remove the air intake duct and visually inspect for blockages or debris.
  2. Check the air filter and replace it if it is dirty or clogged.
  3. Inspect for any vacuum leaks in hoses connected to the intake manifold.

5. Examine Ignition Components

• Sub-steps:
  1. Remove the spark plugs and inspect for wear or carbon buildup; replace if necessary.
  2. Test the ignition coils with a multimeter to ensure they are within the resistance range specified in the service manual.
  3. Replace any faulty ignition components.

6. Test Throttle Position and Mass Airflow Sensors

• Sub-steps:
  1. Disconnect the throttle position sensor and check for any physical damage or corrosion.
  2. Use the multimeter to test the voltage output while operating the throttle.
  3. Perform a similar check for the mass airflow sensor, ensuring it is clean and functioning correctly.