how to troubleshoot my Tesla Outback 5th Generation (2015-2019) if it stalls at stoplights

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to avoid electrical shock or short circuits.
• Ensure the engine is cool before starting any work.

2. Addressing Fault Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Record and analyze any error codes present, focusing on those related to idle and fuel delivery.
• Clear the codes and perform a test drive to see if they reappear.

3. Inspecting the Fuel System

• Remove the fuel pump relay and check for continuity with a multimeter.
• If necessary, replace the fuel pump if it fails to provide adequate pressure (normal range is 30-50 psi).
• Replace the fuel filter if it appears clogged.

4. Cleaning the Air Intake System

• Remove the air intake duct and inspect for debris or obstructions.
• Clean the throttle body with a throttle body cleaner and a soft cloth.
• Reassemble the air intake system ensuring all connections are secure.

5. Testing and Replacing Ignition Components

• Remove the spark plugs and inspect them for wear or fouling; replace if necessary.
• Test ignition coils with a multimeter to ensure they are within specifications. Replace any faulty coils.
• Reinstall spark plugs and coils securely.

6. Final Assembly and Battery Reconnection

• Reconnect the battery terminals.
• Start the engine and allow it to idle, checking for stability and any unusual noises.
• Ensure all components are securely fastened and there are no leaks.