Intake Air Control Valve: Installation

2004 Toyota Matrix XR, FWD, StandardSECTION Installation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2000 Lexus SC 400, 2000 Lexus SC 300, 2000 Lexus RX 300, 2000 Lexus LX 470, and 2000 Lexus LS 400. However, it is still accessible from the selected car via links, so may be relevant.

To install, reverse removal procedure using NEW IAC valve gasket. Apply Seal Packing (08826-00080) at designated areas of IAC valve. See Fig 2. Apply a light coat of engine oil at rubber area on IAC valve before installing. Tighten nuts to specification. See TORQUE SPECIFICATIONSΒ .

Fig 1: Removing No. 2 Intake Air Control Valve (ES300 & RX300)
G99D50552Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

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

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