Throttle Body: Service and Repair

REMOVAL




A (factory adjusted) set screw is used to mechanically limit the position of the throttle body throttle plate. Never attempt to adjust the engine idle speed using this screw. All idle speed functions are controlled by the Powertrain Control Module (PCM).
1. Remove air cleaner tube at throttle body.
2. Disconnect throttle body electrical connectors at IAC motor and TPS.
3. Remove all control cables from throttle body (lever) arm. Refer to the Accelerator Pedal and Throttle Cable or removal/installation procedures.
4. Disconnect necessary vacuum lines at throttle body.
5. Remove three throttle body mounting bolts (2).
6. Remove throttle body from intake manifold.




7. Check condition of old throttle body-to-intake manifold O-ring (2).

INSTALLATION
1. Check condition of throttle body-to-intake manifold O-ring. Replace as necessary.
2. Clean mating surfaces of throttle body and intake manifold.
3. Install throttle body-to-intake manifold O-ring.
4. Install throttle body to intake manifold.
5. Install 3 mounting bolts. Tighten bolts to 11 N.m (100 in. lbs.) torque.
6. Install control cables.
7. Install electrical connectors.
8. Install necessary vacuum lines.
9. Install air plenum.