why does my Honda Civic 11th Generation (2022-Present) sound like it's revving high when idle?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the negative battery terminal to prevent electrical shock.

2. Inspect and Clean Throttle Body

• Remove the intake duct to access the throttle body.
• Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
• Reinstall the intake duct securely.

3. Check and Replace IAC Valve (if necessary)

• Locate the IAC valve, usually found on the intake manifold.
• Disconnect the electrical connector and remove the mounting screws.
• Inspect the valve for blockage or failure; replace if necessary.
• Install the new IAC valve and reconnect the electrical connector.

4. Inspect MAF Sensor

• Locate the MAF sensor in the intake system.
• Carefully disconnect the electrical connector and remove the sensor.
• Clean the sensor with MAF cleaner and allow it to dry before reinstalling.
• Reinstall the MAF sensor and reconnect the electrical connector.

5. Test and Inspect Vacuum Hoses

• Visually inspect all vacuum hoses connected to the intake manifold.
• Replace any cracked or damaged hoses.
• Ensure all connections are tight to prevent air leaks.