how to solve Honda Pilot YF3 (2016-2022) rough idle problem at stop

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Clean the Throttle Body

1. Remove the air intake duct connected to the throttle body using a socket set.
2. Disconnect the throttle position sensor connector.
3. Use throttle body cleaner and a soft cloth to clean the throttle body and butterfly valve.
4. Reconnect the throttle position sensor and air intake duct, ensuring all clamps are secure.

3. Replace Spark Plugs

1. Remove ignition coils by unscrewing the mounting bolts and disconnecting connectors.
2. Use a spark plug socket to remove old spark plugs from the cylinder head.
3. Inspect the old spark plugs for wear; replace with OEM or high-quality aftermarket spark plugs, ensuring proper gap settings (typically 0.043 in).
4. Reinstall ignition coils and connectors.

4. Inspect and Replace Fuel Filter (if applicable)

1. Locate the fuel filter (may be integrated into the fuel pump on some models).
2. Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
3. Disconnect fuel lines from the filter; be cautious of fuel spillage.
4. Replace the fuel filter with a new one, ensuring correct orientation and secure connections.

5. Check Vacuum Lines

1. Inspect all vacuum hoses for cracks or disconnections.
2. Replace any damaged vacuum lines with appropriate diameter hose.
3. Ensure that all connections are tight and free of leaks.