Throttle Body: Service and Repair

Throttle Body Assembly:

REMOVAL

1. Disconnect throttle position sensor and idle air control valve connectors.

2. Disconnect throttle linkage shield, throttle cable, and speed control cable.

CAUTION: When disconnecting throttle cable from ball stud, use a screwdriver or similar tool close to the ball stud to pry off. Removing by hand may damage the cable.

3. Disconnect the air inlet hoses from the throttle body.

4. Disconnect the EVAP harness from the purge ports of the throttle body.

5. Remove four throttle body nuts.

6. Carefully separate air throttle body and accelerator bracket from upper intake manifold.

Throttle Body Assembly:

7. Remove and discard gasket between throttle body and upper intake manifold.

INSTALLATION

1. Ensure that both throttle body and upper intake manifold gasket surfaces are clean.

NOTE: If scraping is necessary, be careful not to damage gasket surfaces of throttle body and upper manifold assemblies, or allow material to drop into manifold.

2. Install a new throttle body gasket on the four studs of the upper intake manifold.

3. Position the accelerator bracket onto the throttle body.

4. Install throttle body to upper intake manifold.

5. Secure throttle body assembly to upper intake manifold with four retaining nuts. Tighten to 12-18 lb ft (16-24 Nm).

Throttle Body Assembly:

6. Connect idle air control valve and throttle position sensor electrical connectors.

7. Connect the EVAP harness to the purge ports of the throttle body.

8. Connect the throttle linkage and cables to the throttle body and accelerator bracket.

9. Connect the air inlet hoses to the throttle body.