my Honda Pilot YF4 (2023-Present) has a rough idle when stopped, what could it be?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and that the engine is cool.
• Disconnect the battery to prevent electrical issues.

2. Inspect and Replace Air Filter

• Remove the air filter housing cover using a socket set.
• Take out the old air filter and inspect it for dirt and debris.
• Replace with a new OEM air filter, ensuring it fits snugly.
• Reattach the housing cover and torque bolts to manufacturer specifications.

3. Check and Replace Spark Plugs

• Remove ignition coil covers if applicable, using a socket set.
• Disconnect ignition coils and pull them out.
• Unscrew and remove the old spark plugs using a spark plug socket.
• Inspect the old spark plugs; replace with new ones according to the manufacturer's gap specifications.
• Reinstall ignition coils and covers, tightening to specified torque.

4. Inspect and Repair Vacuum Hoses

• Visually inspect all vacuum hoses connected to the intake manifold.
• Replace any cracked or damaged hoses with new OEM parts.
• Ensure all connections are secure.

5. Clean or Replace Idle Air Control Valve (IACV)

• Locate the IACV, typically mounted on the throttle body.
• Remove the electrical connector and mounting screws using a socket set.
• Clean the IACV with throttle body cleaner or replace it if necessary.
• Reinstall the IACV and reconnect the electrical connector.