my BMW X3 G01 (2018-2024) has poor acceleration what can cause this

Solution

1. Preparation

• Gather all necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to prevent electrical issues.

2. Inspect and Clean Air Intake System

• Tools Required: Screwdriver set, cleaning spray, shop towels
• Remove the air intake duct and inspect the air filter.
  • If dirty, replace the air filter.
• Clean the throttle body using cleaning spray and a shop towel to remove carbon buildup.

3. Fuel System Check

• Tools Required: Fuel pressure gauge, wrenches
• Connect the fuel pressure gauge to the fuel rail.
• Turn on the ignition (do not start the engine) and check the pressure reading against specifications.
  • If the pressure is low, inspect the fuel pump and filter for issues.
• Replace the fuel filter if necessary.

4. Ignition System Inspection

• Tools Required: Socket set, torque wrench
• Remove the ignition coils.
• Check the spark plugs for wear (replace if they are worn or fouled).
• Reinstall the ignition coils ensuring they are properly seated.

5. Exhaust Inspection

• Tools Required: Jack and jack stands, socket set
• Raise the vehicle and inspect the exhaust system for leaks or blockages.
  • Repair or replace any damaged components as necessary.

6. Throttle Position Sensor (TPS) Test

• Tools Required: Multimeter
• Disconnect the TPS connector and set the multimeter to measure resistance.
• Check the resistance values against manufacturer specifications.
  • Replace the TPS if readings are out of spec.