Throttle Body: Service and Repair

REMOVAL PROCEDURE




1. Drain the coolant. Refer to Draining and Filling Cooling System in Engine Cooling.
2. Remove the air intake breather tube.
3. Disconnect IAT electrical connector.
4. Loosen both clamps on the air intake duct.
5. Remove the air intake duct.




6. Disconnect the IAC valve electrical connector.




7. Disconnect the TP sensor electrical connector.




8. Disconnect the accelerator and cruise control cables.




9. Remove the accelerator control cable bracket.




10. Remove the throttle body coolant bypass hoses.
11. Remove the heater pipe nut at the throttle body.
12. Remove the nuts and bolts holding the throttle body to the intake manifold.
13. Remove the throttle body assembly.

INSTALLATION PROCEDURE

NOTE: Do Not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.




1. Clean the gasket surface on the intake manifold and the throttle body assembly.
2. Reinstall a new gasket, if necessary.
3. Reinstall the throttle body assembly.

NOTE: Refer to Fastener Notice in Service Precautions.

4. Reinstall the throttle body retaining nuts and bolts (3).

Tighten
Tighten the throttle body retaining nuts and bolts to 28 N.m (21 lb ft).

5. Connect the heater pipe nut at the throttle body.
6. Connect the throttle body coolant bypass hoses.




7. Connect the IAC valve electrical connector.




8. Connect the TP sensor electrical connector.
9. Reinstall the accelerator control cable bracket.




10. Reinstall the accelerator and cruse control cables.




11. Reinstall the air intake tube.

IMPORTANT: The throttle should operate freely without binding between full closed and wide open throttle.

12. Inspect and check for complete throttle opening and closing positions by operating the accelerator pedal. Also check for poor carpet fit under the accelerator pedal.
13. Tighten both clamps on the air intake duct.
14. Connect the breather tube.
15. Connect the IAC electrical connector.
16. Start the engine.
17. Refill the coolant. Refer to Draining and Filling Cooling System in Engine Cooling.