my BMW X5 F15 (2014-2019) has poor acceleration what could be wrong

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Air Filter

• Remove the air filter housing cover using a socket set.
• Take out the old air filter and inspect the housing for debris.
• Install a new air filter (OEM recommended) and reassemble the housing.
• Torque the housing cover to the manufacturer’s specification.

3. Check and Replace Spark Plugs

• Remove the ignition coils by unscrewing the retaining bolts and disconnecting the electrical connectors.
• Remove the spark plugs using a spark plug socket and ratchet.
• Inspect old spark plugs for wear or carbon buildup.
• Install new spark plugs (OEM recommended) and torque to manufacturer specifications (usually around 15-20 lb-ft).
• Reinstall the ignition coils.

4. Test and Replace Throttle Position Sensor (if needed)

• Disconnect the electrical connector from the TPS.
• Remove the TPS using a screwdriver.
• Install the new TPS and reconnect the electrical connector.
• Clear any fault codes from the OBD-II scanner.

5. Inspect and Repair Fuel System

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the ON position (do not start) to check fuel pressure; it should be within manufacturer specifications.
• If pressure is low, inspect and replace the fuel pump or fuel filter as needed.
• Reassemble any components removed during inspection.