why does my Toyota Highlander Fourth Generation (2020-present) feel like it’s losing power

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery before beginning work to ensure safety.
• Ensure the vehicle is on a flat surface and securely elevated if needed.

2. Replace Air Filter

• Remove the engine cover if necessary using a socket set.
• Locate the air intake housing and open it.
• Remove the old air filter and inspect for dirt or damage.
• Install a new air filter, ensuring it is seated properly.
• Reassemble the intake housing and engine cover.

3. Inspect and Clean Throttle Body

• Disconnect the throttle body connector and remove the throttle body using a socket set.
• Clean the throttle body interior with throttle body cleaner and a soft cloth.
• Reinstall the throttle body, ensuring all gaskets are in good condition.
• Reconnect the throttle body connector.

4. Check and Replace Spark Plugs

• Remove ignition coil covers if present using a socket set.
• Disconnect the ignition coils and remove them.
• Extract the old spark plugs using a spark plug socket.
• Install new spark plugs with the correct gap as per manufacturer specifications.
• Reinstall the ignition coils and covers.

5. Inspect Fuel System

• Connect a fuel pressure gauge to the fuel rail test port.
• Start the engine and monitor fuel pressure; it should be within the manufacturer's specified range.
• If pressure is low, inspect the fuel pump and fuel filter for any restrictions or failures.

6. Test Drive and Clear Codes

• After completing repairs, reconnect the battery.
• Start the vehicle and allow it to idle for a few minutes.
• Take the vehicle for a test drive to ensure power is restored.
• Use the OBD-II scanner to clear any trouble codes if necessary.