Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2004 Toyota Avalon XLSFACTORY OEM SERVICE PROCEDURE

Acoustic Control Induction System (ACIS): Removal

REMOVE NO.1 INTAKE AIR CONTROL VALVE (See REMOVAL and REPLACEMENT ).
REMOVE NO.2 INTAKE AIR CONTROL VALVE
1. Disconnect the actuator vacuum hose.
  
  Fig 1: Disconnecting Actuator Vacuum Hose
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the intake air control valve.
  1. Removal the 4 nuts and disconnect the ground strap and cable.
  2. Remove the intake air control valve by prying a screwdriver between the intake air control valve and air intake chamber.
  3. Remove the gasket.
Fig 2: Removing Intake Air Control Valve
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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