why does my Volkswagen Golf MK7 (2015-2019) stall when I stop?

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, throttle body cleaner, multimeter.
• Disconnect the battery to avoid electrical shorts during repairs.

2. Clean Throttle Body

• Remove the air intake duct connected to the throttle body using a socket set.
• Spray throttle body cleaner inside the throttle body and clean with a soft cloth or brush.
• Reassemble the air intake duct and reconnect any disconnected sensors.

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

• Locate the IAC valve, typically found on or near the throttle body.
• Disconnect the electrical connector from the IAC valve.
• Use a multimeter to test for continuity and operation. Replace if defective.
• Reinstall the IAC valve and reconnect the electrical connector.

4. Check and Clean Mass Airflow Sensor

• Disconnect the MAF sensor from the air intake system.
• Spray MAF cleaner on the sensor elements to remove dirt and debris.
• Allow it to dry completely before reinstalling the sensor.

5. Inspect Vacuum Hoses

• Visually inspect all vacuum hoses connected to the intake manifold for cracks or leaks.
• Replace any damaged hoses with OEM parts.
• Ensure all connections are secure and leak-free.

6. Final Steps

• Reconnect the battery.
• Start the engine and allow it to reach operating temperature while monitoring the idle.