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Home >> Isuzu >> 2004 >> Ascender Limited, 5.3 P, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Introduction) - 5.3L >> Repair Instructions >> Throttle Body Assembly Replacement >> Installation Procedure
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Installation Procedure

    Fig 1: View Of Throttle Body Gasket
    GM492774Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW throttle body gasket (1).
  2. Install the throttle body.
    3. Fig 2: View Of Throttle Body & Nuts
    GM825837Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the throttle body bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    4. Fig 3: View Of Auxiliary Heater Inlet & Outlet Hoses/Pipes
    GM901492Courtesy of GENERAL MOTORS CORP.
  4. Connect the 2 throttle body engine coolant hoses to the throttle body.
  5. Position the throttle body hose clamps.
    6. Fig 4: Locating Electrical Components At Top Of Engine
    GM898331Courtesy of GENERAL MOTORS CORP.
  6. Connect the throttle actuator motor electrical connector (2).
    7. Fig 5: View Of Intake Air Tube
    GM898123Courtesy of GENERAL MOTORS CORP.
  7. Install the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .
  8. Refill the cooling system. Refer to Draining and Filling Cooling System (Body Vin Code 6) in Engine Cooling.
  9. Verify that the vehicle meets the following conditions:
    • The vehicle is not in a reduced engine power mode.
    • The ignition is ON.
    • The engine is OFF.
  10. Connect a scan tool in order to test for a proper throttle-opening and throttle-closing range.
  11. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle (WOT).
  12. Start the engine.
  13. Inspect for coolant leaks.
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