my Skoda Octavia NFL (2020-Present) is stalling at traffic lights what could be wrong

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the vehicle battery to avoid any electrical issues during repair.

2. Clean the Throttle Body

• Tools Required: Throttle body cleaner, soft brush, rag.
• Remove the intake duct to access the throttle body.
• Spray throttle body cleaner on the throttle body and use the brush to scrub away carbon buildup.
• Wipe clean with a rag and ensure no debris is left inside.

3. Replace Fuel Filter (if applicable)

• Tools Required: Socket set, fuel line disconnect tool, new fuel filter.
• Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
• Disconnect the fuel lines from the filter using the fuel line disconnect tool.
• Remove the old fuel filter and install the new one in the correct orientation.
• Reconnect the fuel lines and replace the fuel pump fuse.

4. Test and Replace Idle Air Control Valve (if faulty)

• Tools Required: Multimeter, replacement IAC valve.
• Disconnect the electrical connector from the IAC valve.
• Use a multimeter to check the resistance; refer to the vehicle's specifications.
• If resistance is out of range, replace the IAC valve by removing the mounting screws and installing a new one.

5. Reconnect Battery and Test

• Reconnect the vehicle battery.
• Start the engine and let it idle to check if the stalling issue is resolved.