how to troubleshoot my Ford F-150 13th Generation (2015-2020) when it stalls

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical shock during repairs.

2. Fuel System Inspection

• Tools Required: Fuel pressure gauge, line wrenches
• Sub-steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Connect the fuel pressure gauge to the test port.
  3. Turn the ignition to the "ON" position (do not start the engine) and check the gauge reading. It should typically be between 30-50 psi.
  4. If the pressure is low, inspect the fuel pump, fuel filter, and fuel lines for blockages or failures.

3. Vacuum Leak Inspection

• Tools Required: Smoke machine or carburetor cleaner
• Sub-steps:
  1. Use a smoke machine to detect leaks in the intake system or, alternatively, spray carburetor cleaner around the intake manifold and hoses while the engine is running.
  2. If there is a change in engine RPM, a vacuum leak is present.
  3. Replace any damaged hoses or seals as necessary.

4. Ignition System Check

• Tools Required: Socket set, torque wrench
• Sub-steps:
  1. Remove the engine cover if applicable to access the ignition coils.
  2. Disconnect the electrical connectors from each ignition coil.
  3. Remove the ignition coils using a socket set and inspect them for cracks or damage.
  4. Replace any faulty ignition coils and reinstall them with the correct torque specifications (typically around 8-10 ft-lbs).
  5. Reconnect the electrical connectors.

5. Throttle Position Sensor Testing

• Tools Required: Multimeter
• Sub-steps:
  1. Locate the throttle position sensor (TPS) on the throttle body.
  2. Disconnect the TPS electrical connector.
  3. Set the multimeter to measure resistance and connect the leads to the TPS terminals.
  4. Slowly open the throttle and observe the resistance; it should change smoothly without jumps or dead spots.
  5. Replace the TPS if it does not meet specifications.