why does my Toyota Highlander Third Generation (2014-2019) struggle to accelerate

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to ensure safety.

2. Clean the Throttle Body

• Remove the air intake duct to access the throttle body.
• Use throttle body cleaner and a clean cloth to remove carbon deposits.
• Reassemble the air intake duct and reconnect the battery.

3. Inspect and Replace Spark Plugs

• Remove the ignition coils by unscrewing the bolts and disconnecting the electrical connectors.
• Remove the old spark plugs using a spark plug socket and ratchet.
• Inspect the spark plugs for wear; replace them with OEM specifications.
• Reinstall the ignition coils and reconnect the electrical connectors.

4. Fuel System Inspection

• If low fuel pressure is detected, replace the fuel filter.
• If necessary, access the fuel pump by removing the rear seat and fuel pump access cover.
• Replace the fuel pump if it fails to deliver the required pressure.