Preliminary Inspection
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.
- Using vacuum pump, apply 15.7 Hg in. of vacuum to throttle opener. Perform STEP 1. See Fig 1. Ensure clearance exists at tip of throttle opener and no clearance exists between throttle stop screws and throttle levers. Perform STEP 1. See Fig 1.
- Note location of No. 1 and 2 throttle bodies on No. 1 intake air control valve. Perform STEP 2. See Fig 1. With 15.7 Hg in. of vacuum still applied to throttle opener, check that about .0051" (.130 mm) clearance exists between close side adjusting screw and throttle lever on No. 1 throttle body, and about .0087" (.220 mm) clearance exists between open side adjusting screw and throttle lever on No. 1 throttle body. Perform STEP 3. See Fig 1.
- Fully open throttle lever on No. 2 throttle body and measure clearance between close side adjusting screw and throttle lever on No. 1 throttle body. Perform STEP 4. See Fig 1. Clearance between close side adjusting screw and throttle lever on No. 1 throttle body should be .0098-.0177" (.250-.450 mm). If all clearances are as specified, throttle body lever adjustment is not required. If any clearance is not as specified, throttle body lever adjustment procedure must be performed. Proceed to adjustment procedure.