why does my Honda Civic 11th Generation (2022-Present) stall at traffic lights

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Disconnect the negative battery terminal to prevent any electrical shorts.

2. Clean the Throttle Body

• Tools Required: Throttle body cleaner, soft cloth, socket set.
• Remove the air intake duct connected to the throttle body.
• Spray throttle body cleaner onto the throttle plate and use a soft cloth to wipe off carbon deposits.
• Ensure the throttle plate moves freely and is not stuck.

3. Inspect and Clean the Idle Air Control Valve (IAC)

• Tools Required: Screwdriver set, cleaning solvent.
• Locate the IAC valve, typically found near the throttle body.
• Disconnect the electrical connector and remove the valve.
• Clean the valve with solvent to remove carbon buildup. Ensure the valve operates smoothly when reinstalled.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, multimeter.
• Connect the fuel pressure gauge to the fuel rail and turn the ignition to the "On" position without starting the engine. Check the pressure readings against manufacturer specifications.
• If pressure is low, inspect the fuel pump and filter for potential blockages or failures.

5. Reassemble Components

• Reinstall the throttle body duct and IAC valve after cleaning.
• Reconnect the negative battery terminal and ensure all connections are secure.