my Skoda Octavia NFL (2020-Present) stutters and stalls when I come to a stop, what's causing this?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cold.
• Disconnect the negative terminal of the battery for safety.

2. Clean Throttle Body

• Tools Required: Throttle body cleaner, clean cloths, screwdriver set.
• Remove the air intake duct connected to the throttle body.
• Clean the throttle body with throttle body cleaner and a clean cloth, focusing on the valve and surrounding areas.
• Reattach the air intake duct securely.

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

• Tools Required: Screwdriver set, IAC cleaner (if applicable).
• Locate the IAC valve; disconnect the electrical connector and remove the mounting screws.
• Clean the IAC valve using IAC cleaner and a soft brush if necessary.
• Reinstall the IAC valve, ensuring it is securely fastened.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, wrench set.
• Connect the fuel pressure gauge to the fuel rail according to the manufacturer's specifications.
• Turn on the ignition without starting the engine to check the fuel pressure reading; it should match the specifications outlined in the service manual.
• If pressure is low, inspect the fuel pump, fuel filter, and lines for blockages or failures.

5. Test Battery and Electrical System

• Tools Required: Multimeter.
• Use a multimeter to check the battery voltage; it should read around 12.6 volts (engine off).
• Start the engine and check the voltage again; it should read between 13.7 to 14.7 volts (engine running).
• If readings are outside these ranges, consider replacing the battery or testing the alternator.