how to diagnose the cause of my Tesla Model 3 Highland (2024-present) engine shaking

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle’s battery for safety.
• Ensure the vehicle is on a flat surface and secure with wheel chocks.

2. Inspect Engine Mounts

• Sub-steps:
  • Remove any covers obstructing access to engine mounts.
  • Use a jack to slightly lift the engine while inspecting each mount.
  • Replace any damaged engine mounts with OEM parts.
• Tools Required: Socket set, jack, torque wrench.

3. Replace Spark Plugs (if necessary)

• Sub-steps:
  • Remove the ignition coil connectors.
  • Unscrew the spark plugs using a spark plug socket.
  • Install new spark plugs, ensuring proper torque (typically around 15 lb-ft).
  • Reconnect ignition coils.
• Tools Required: Spark plug socket, torque wrench, ratchet.

4. Test Fuel Delivery

• Sub-steps:
  • Connect a fuel pressure gauge to the fuel rail.
  • Start the engine and check if the fuel pressure is within specifications.
  • If low, inspect fuel pump and filter, replacing them if necessary.
• Tools Required: Fuel pressure gauge.

5. Repair Exhaust Leaks

• Sub-steps:
  • Inspect exhaust manifold and pipes for leaks.
  • Use a smoke machine to identify leaks if visible inspection is inconclusive.
  • Replace gaskets or sections of the exhaust as needed.
• Tools Required: Socket set, exhaust sealant, replacement gaskets.