why does my BMW X5 F15 (2014-2019) hesitate when I accelerate

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal to prevent electrical shocks.
• Gather necessary tools and parts.

2. Fuel System Inspection

• Sub-steps:
  1. Remove the fuel pump relay from the fuse box.
  2. Relieve fuel system pressure by loosening the fuel filler cap.
  3. Inspect the fuel filter for clogs; replace if necessary.
  4. Test the fuel pump operation by reconnecting the relay and listening for the pump activation sound.
  5. If the pump is not functioning, replace it according to manufacturer instructions.

3. Air Intake System Check

• Sub-steps:
  1. Remove the air intake duct to access the air filter.
  2. Inspect the air filter; replace if dirty or clogged.
  3. Check for leaks or cracks in the intake hoses and gaskets.
  4. Reassemble the air intake system securely.

4. Throttle Position Sensor Testing

• Sub-steps:
  1. Locate the throttle position sensor on the throttle body.
  2. Disconnect the electrical connector and remove the sensor.
  3. Use a multimeter to check the resistance values against the specifications in the service manual.
  4. If out of specification, replace the TPS and reconnect it.

5. Spark Plug and Ignition Coil Inspection

• Sub-steps:
  1. Remove the ignition coils from the engine.
  2. Inspect the spark plugs for wear, deposits, or damage; replace if necessary.
  3. Test the ignition coils with a multimeter for proper resistance.
  4. Reinstall new or confirmed good spark plugs and ignition coils.