2008 Lexus GX 470FACTORY OEM SERVICE PROCEDURE

Throttle Body: Installation

  1. INSTALL THROTTLE WITH MOTOR BODY ASSEMBLY 
    1. Install a new gasket and the throttle body with the 3 bolts and nut.

      Torque: 14 N*m (143 kgf*cm, 10 ft.*lbf) 

      Fig 1: Locating Throttle Body Bolts And Nut
      G05843785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the water by-pass hose, water by-pass hose No. 7 and throttle position sensor connector.
  2. INSTALL AIR CLEANER HOSE ASSEMBLY 
  3. ADD ENGINE COOLANT  (See REPLACEMENT )
  4. CHECK FOR ENGINE COOLANT LEAKS  (See ON-VEHICLE INSPECTION )
    Fig 2: Locating Water By-Pass Hose, Water By-Pass Hose No. 7 And Throttle Position Sensor Connector
    G04968223Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL V-BANK COVER SUB-ASSEMBLY 
    1. Install the V-bank cover sub-assembly with the 2 nuts.

      Torque: 7.5 N*m (80 kgf*cm, 66 in.*lbf) 

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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