my Toyota Corolla E210 (2019-2024) has poor throttle response, what could be wrong?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to ensure safety before working on electrical components.

2. Clean the Throttle Body

• Tools Required: Throttle body cleaner, soft lint-free cloth, screwdriver set.
• Remove the air intake duct connected to the throttle body.
• Use throttle body cleaner to spray the inside of the throttle body.
• Wipe the throttle body with a soft lint-free cloth to remove carbon deposits.
• Reattach the air intake duct securely.

3. Inspect and Clean the MAF Sensor

• Tools Required: MAF sensor cleaner, screwdriver set.
• Locate and remove the MAF sensor from the air intake system.
• Spray the MAF sensor with MAF sensor cleaner to remove dirt and debris.
• Allow the sensor to dry completely before reinstalling it.
• Reattach the MAF sensor and ensure all connections are tight.

4. Check and Replace Fuel Filter (if necessary)

• Tools Required: Wrench set, fuel line disconnect tool, catch pan.
• Locate the fuel filter and relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
• Disconnect the fuel lines using the disconnect tool and remove the fuel filter.
• Install the new fuel filter, ensuring the flow direction is correct.
• Reconnect the fuel lines and reinstall the fuel pump fuse.

5. Test Accelerator Pedal Position Sensor

• Tools Required: Multimeter.
• Disconnect the accelerator pedal position sensor connector.
• Use a multimeter to check the resistance or voltage output according to the manufacturer's specifications.
• If the sensor is faulty, replace it with a new one and reconnect.