how to fix Honda Pilot YF3 (2016-2022) rough running and stalling problems

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to ensure safety.

2. Air Intake Inspection

• Remove the air intake duct to access the throttle body.
• Inspect the air filter and replace if dirty.
• Check for any leaks or cracks in the intake manifold and replace any damaged sections.

3. Fuel System Service

• Ensure the fuel system is depressurized by relieving pressure at the fuel rail.
• Replace the fuel filter if it hasn't been changed per the maintenance schedule.
• Replace the fuel pump if pressure readings were below specifications (usually around 30-40 psi for the Pilot).

4. Ignition System Repair

• Remove the ignition coils using a socket set.
• Inspect spark plugs for wear or damage; replace if necessary (typically with NGK or Denso recommended by Honda).
• Reinstall new ignition coils and torque to manufacturer specifications.

5. Throttle Body Cleaning

• Disconnect the throttle body electrical connector.
• Remove the throttle body from the intake manifold.
• Use throttle body cleaner and a soft brush to clean the inside surfaces. Ensure the throttle plate moves freely.
• Reinstall the throttle body and reconnect the electrical connector.

6. Coolant Temp Sensor Replacement

• Locate the engine coolant temperature sensor (usually near the thermostat housing).
• Disconnect the electrical connector and remove the sensor using a socket.
• Install the new sensor and reconnect the electrical connector.