how to replace the catalytic converter in Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Tools Required: Jack and jack stands, socket set, torque wrench, O2 sensor socket, exhaust pipe cutter (if applicable), safety glasses, gloves.
• Park the vehicle on a level surface and allow the exhaust system to cool completely.
• Disconnect the battery to prevent electrical issues.

2. Lift the Vehicle

• Use a jack to lift the vehicle and secure it with jack stands to ensure safety while working underneath.

3. Remove the Exhaust Components

• Sub-steps:
  • Locate the catalytic converter and identify all the bolts securing it to the exhaust system.
  • Use a socket set to remove the bolts connecting the catalytic converter to the exhaust manifold and the exhaust pipe.
  • If necessary, use an exhaust pipe cutter to separate the catalytic converter from the exhaust system if it is too corroded to remove with bolts.

4. Disconnect Oxygen Sensors

• Sub-steps:
  • Use an O2 sensor socket to carefully remove the upstream and downstream oxygen sensors from the catalytic converter.
  • Place the sensors in a safe location to avoid damage.

5. Install New Catalytic Converter

• Sub-steps:
  • Position the new catalytic converter in place and align it with the exhaust manifold and exhaust pipe.
  • Reinsert and tighten the bolts to the manufacturer's specified torque using a torque wrench.
  • Reinstall the oxygen sensors into the new catalytic converter, ensuring they are securely connected.

6. Finalize Installation

• Sub-steps:
  • Reconnect the battery.
  • Lower the vehicle back to the ground.