Reassembly (RX300)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Lexus SC 430, 2002 Lexus RX 300, 2002 Lexus LX 470, 2002 Lexus LS 430, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
To install TP sensor, ensure throttle valve is fully closed. Place TP sensor on throttle body with TP sensor turned clockwise 30-60 degrees against the fully closed throttle valve. Turn sensor clockwise until TP sensor mounting holes line up with throttle body mounting holes. Install and tighten TP sensor retaining screws. To install IAC valve, use a NEW IAC valve gasket. Position IAC valve on throttle body. Install and tighten IAC valve screws.