Toyota Sienna 2000-06

Throttle Body

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Removal & Installation




NOTE
There are many hoses and electrical connectors that are either removed or disconnected to facilitate the throttle body removal. It is a good idea to mark component connections and locations prior to removal to avoid confusion during installation.

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Discharge the fuel system pressure.
  4.  
  5. Drain the cooling system.
  6.  
  7. Remove the engine cover.
  8.  
  9. Remove the air cleaner hose with the resonator.
  10.  
  11. Disconnect the accelerator and cruise control cable.
  12.  
  13. Remove the bolt attaching the throttle body to the bracket.
  14.  
  15. Disconnect the throttle position and Idle air control valve connectors.
  16.  
  17. Label and disconnect any remaining electrical components and hoses that would hinder the throttle body removal.
  18.  
  19. Loosen the throttle body nuts, remove the throttle body and the gasket.
  20.  
  21. Clean the gasket mating surfaces.
  22.  

To install:

  1. Install a new gasket and the throttle body. Tighten the throttle body nuts to 22 ft. lbs. (29 Nm).
  2.  
  3. Attach the hoses and electrical connectors.
  4.  
  5. Tighten the throttle body to bracket bolt to 14 ft. lbs. (19 Nm).
  6.  
  7. Install the remaining components.
  8.  
  9. Fill the cooling system.
  10.  
  11. Start the vehicle and check for leaks.

    Click image to see an enlarged view

    Fig. Throttle body mounting nut locations-Sienna with 3.0L engine

  12.  


NOTE
There are many hoses and electrical connectors that are either removed or disconnected to facilitate the throttle body removal. It is a good idea to mark component connections and locations prior to removal to avoid confusion during installation.

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Discharge the fuel system pressure.
  4.  
  5. Drain the cooling system.
  6.  
  7. Remove the engine cover.
  8.  
  9. Remove the air cleaner assembly as follows:
    1. Disconnect the mass air flow sensor, tag and unplug the 3 vacuum hoses.
    2.  
    3. Tag and disconnect the fuel vapor feed hose, ventilation hose and remove the air cleaner cap bolts.
    4.  
    5. Remove the hose from the cap and remove the cap with the hose.
    6.  
    7. Remove the air filter.
    8.  

  10.  
  11. Disconnect the throttle body motor connector.
  12.  
  13. Disconnect the water by pass hoses from the throttle body.