why is my Ford F-150 13th Generation (2015-2020) stalling at stop lights

Solution

1. Preparation

• Tools Required:
  • OBD-II scanner
  • Socket set
  • Screwdrivers
  • Multimeter
  • Fuel pressure gauge
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent any electrical issues during repair.

2. Throttle Body Cleaning

• Remove the air intake duct connected to the throttle body using the socket set.
• Clean the throttle body with throttle body cleaner and a soft cloth, ensuring no debris falls into the intake.
• Reinstall the air intake duct and tighten the clamps securely.

3. Fuel System Inspection

• Fuel Pump Pressure Test:
  • Connect the fuel pressure gauge to the fuel rail Schrader valve.
  • Turn the ignition key to the "ON" position (do not start the engine) and check the fuel pressure reading against manufacturer specifications.
  • If pressure is low, inspect the fuel pump and replace if necessary.
• Replace the fuel filter if it shows signs of clogging or is due for maintenance.

4. Ignition System Inspection

• Remove the spark plugs using the socket set and inspect for wear or fouling.
• Replace any worn or damaged spark plugs with new ones, ensuring they are gapped correctly.
• Check ignition coils for proper function using a multimeter and replace any faulty coils.

5. Final Assembly

• Reconnect the battery.
• Start the engine and allow it to idle to ensure smooth operation.
• If the check engine light was on, use the OBD-II scanner to clear the codes.