Throttle Body: Service and Repair

THROTTLE BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE




1. Drain the coolant. Refer to Draining and Filling Cooling System in Cooling System.
2. Remove the air intake duct.




3. Disconnect the idle air control (IAC) valve electrical connector.




4. Disconnect the throttle position (TP) sensor electrical connector.




5. Remove the accelerator control cable bracket.




6. Disconnect the throttle body coolant bypass hoses.
7. Disconnect the heater pipe nut at the throttle body.
8. Remove the nuts and bolts holding the throttle body to the intake manifold.
9. Remove the throttle body assembly.
10. Remove the old gasket.

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. Install a new gasket, if necessary.
3. Install the throttle body assembly.
4. Install the throttle body retaining nuts and bolts.

NOTE: Refer to Fastener Notice in Service Precautions.

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. Install the air intake duct.
11. Refill the coolant. Refer to Draining and Filling Cooling System in Cooling System.
12. Inspect for complete throttle opening and closing positions by operating the accelerator pedal. Also inspect for poor carpet fit under the accelerator pedal.

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