why is my BMW X3 G01 (2018-2024) losing power while driving

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety during repairs.
• Ensure the vehicle is on a level surface and secure with jack stands if lifting is required.

2. Inspect and Replace Fuel Filter

• Locate the fuel filter; it's typically along the fuel line.
• Using a wrench, disconnect the fuel lines from the filter. Have a rag handy to catch any spilled fuel.
• Remove the old fuel filter and install the new one, ensuring the direction of flow matches the markings on the filter.
• Reconnect the fuel lines and tighten securely.

3. Check and Replace Spark Plugs

• Remove the engine cover if applicable.
• Disconnect the ignition coil connectors and remove the coils.
• Use a spark plug socket to remove the spark plugs.
• Inspect spark plugs for wear; replace with OEM specifications if necessary.
• Install new spark plugs and reattach the ignition coils, ensuring all connections are secure.

4. Test and Replace Throttle Position Sensor

• Disconnect the electrical connector from the TPS.
• Using a multimeter, test the TPS resistance according to the service manual specifications.
• If the TPS is faulty, remove it by unscrewing the mounting bolts.
• Install the new TPS and reconnect the electrical connector.

5. Inspect Air Intake System

• Check the air filter for clogs and replace if dirty.
• Inspect all intake hoses for cracks or loose connections.
• Clean the throttle body using throttle body cleaner and a soft cloth.