why does my Toyota Camry lose power when accelerating?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal.
• Allow the engine to cool before beginning work.

2. Clean or Replace Air Filter

• Remove the air filter housing cover using a socket set.
• Take out the air filter and inspect it for dirt and damage.
• Clean the air filter with compressed air or replace it with a new one if necessary.
• Reinstall the air filter and housing cover, ensuring a snug fit.

3. Test and Replace Fuel Pump (if necessary)

• Connect the fuel pressure gauge to the fuel rail service port.
• Turn the ignition to the "ON" position without starting the engine and check the pressure reading.
• If the pressure is below specifications, replace the fuel pump:
  • Relieve fuel system pressure by removing the fuel pump fuse and starting the engine until it stalls.
  • Disconnect the fuel lines and electrical connectors from the fuel pump.
  • Remove the fuel pump assembly from the tank, following manufacturer-specific procedures.
  • Install the new fuel pump in reverse order of removal and reconnect all components.

4. Inspect and Replace Spark Plugs and Ignition Coils

• 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 spark plugs for wear, carbon buildup, or damage, and replace if necessary.
• Install new spark plugs, torqueing to manufacturer specifications (typically around 13-15 lb-ft).
• Reinstall ignition coils and ensure they are seated properly.

5. Clean Throttle Body

• Remove the throttle body from the intake manifold after disconnecting the air intake hose and electrical connectors.
• Use throttle body cleaner and a soft brush to clean the inside of the throttle body.
• Ensure the throttle plate is free-moving and not sticking, then reassemble the throttle body.