Throttle Body: Service and Repair

REMOVAL PROCEDURE




1. Turn OFF the ignition.
2. Drain enough of the engine coolant to prevent leakage from the throttle body coolant bypass hoses. Refer to Draining and Filling Cooling System in Engine Cooling.
3. Disconnect the breather tube from the air Intake tube.
4. Remove the air Intake tube.




5. Disconnect the IAC valve electrical connector.




6. Disconnect the TP sensor electrical connector.




7. Disconnect the accelerator controls cable.




8. If applicable disconnect the cruise control cable from the throttle lever and accelerator bracket.




9. Remove the accelerator control cable bracket.




10. Disconnect the throttle body coolant bypass hoses.
11. Disconnect 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.

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

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




7. Connect the IAC valve electrical connector.




8. Connect the TP sensor electrical connector.




9. Install the accelerator controls cable bracket.




10. If applicable connect the cruise control cable to the throttle lever and accelerator bracket.




11. Connect the accelerator controls cable.




12. Install the air intake tube.
13. Connect the air intake tube.
14. Connect the IAT sensor electrical connector.
15. Connect the breather Into the air tube.
16. Refill the coolant. Refer to Draining and Filling Cooling System in Engine Cooling.

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

17. Inspect for complete throttle opening and closing positions by operating the accelerator pedal. Also check for poor carpet fit under the accelerator pedal.