Throttle Body: Service and Repair

REMOVAL
1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Engine Cooling.
3. Remove the air intake duct.
4. Remove the accelerator cable from throttle
5. Disconnect the electrical connectors from the throttle position sensor and the idle air control valve solenoid.
6. Disconnect all vacuum hoses below air horn.




7. Disconnect coolant lines.
8. Remove the mounting bolts retaining the throttle body the intake manifold.




9. Lift up the throttle body from the intake manifolds.
10. Remove the gaskets from the intake manifolds.
11. Remove the IAC.
12. Remove TPS.

INSPECTION

NOTE: Do not use solvent of any type when you clean the gasket surfaces on the intake manifold and the throttle body assembly. The gasket surface and the throttle body assembly may be damaged as results.

1. If the throttle body gasket needs to be released, remove any gasket material that may be stuck to the mating surfaces of the manifold.




2. Do not leave any scratches in the aluminum casting.

INSTALLATION
1. Install IAC valve onto the throttle body.
2. Install TPS onto the throttle body if necessary.
3. Place the gasket then the throttle body on the manifold.




4. Install four mounting bolt. Tighten the throttle body mounting bolt to 13.5 N.m (10 lb ft).
5. Connect coolant line and secure them with clamps.
6. Connect all vacuum hoses and secure them with clamps if necessary.
7. Install accelerator control cable bracket onto the throttle body.




8. Connect accelerator control cable to throttle plate.
9. Connect electrical connector at IAC valve and TPS.
10. Install the air intake duct.
11. Fill the cooling system with required coolant.




12. Connect the negative battery cable.