Throttle Body Assembly Replacement

REMOVAL PROCEDURE
1. Partially drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System.




2. Disconnect the air intake duct hoses from the throttle body.




3. Disconnect the following from the throttle body:
- The surge tank inlet hose
- The throttle body heater hose
- The fuel pressure regulator atmospheric vent tube




4. Disconnect the throttle body electrical connector (2) from the throttle body (1).




5. Remove the throttle body assembly mounting bolts.




6. Remove the throttle body assembly from the following:
- The intake plenum
- The vacuum fittings




7. Remove the and discard the following:
- The throttle body O-ring seals (1)
- The vacuum fitting O-ring seals


INSTALLATION PROCEDURE




1. Position the throttle body O-ring seals (1) to the grooves in the throttle body.
2. Lightly lubricate the vacuum fitting O-rings with clean engine oil.
3. Install the vacuum fitting O-rings to the vacuum fittings.




4. Simultaneously position the throttle body assembly to the following:
- The intake plenum
- The vacuum fittings




5. Install the throttle body assembly mounting bolts.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the throttle body assembly mounting bolts to 8 N.m (71 lb in).




6. Connect the throttle body electrical connector (2) to the throttle body (1).




7. Connect the following to the throttle body:
- The surge tank inlet hose
- The throttle body heater hose
- The fuel pressure regulator atmospheric vent tube




8. Connect the air intake duct hoses to the throttle body.
9. Perform the idle learn procedure. Refer to Idle Learn Procedure.
10. Fill the cooling system. Refer to Draining and Filling Cooling System in Cooling System.