2008 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Throttle Body: Removal

  1. DRAIN ENGINE COOLANT  (See REPLACEMENT )
  2. REMOVE V-BANK COVER SUB-ASSEMBLY 
    1. Remove the 2 nuts and V-bank cover sub-assembly.
  3. REMOVE AIR CLEANER HOSE ASSEMBLY 
    1. Disconnect the vacuum hoses (for the P/S idle-up and fuel pressure regulator) and ventilation hose.
    2. Remove the air cleaner hose assembly.
  4. REMOVE THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Disconnect the water by-pass hose, water by-pass hose No. 7 and the throttle position sensor connector.
      Fig 1: Locating Water By-Pass Hose, Water By-Pass Hose No. 7 And Throttle Position Sensor Connector
      G04968223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts and nut.
    3. Remove the throttle body and the throttle body gasket
      Fig 2: Locating Throttle Body Bolts And Nut
      G04968224Courtesy of © 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:

  • • 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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