Throttle Body: Service and Repair
Throttle Body Assembly Replacement
Removal Procedure
1. Disconnect the intake air temperature (IAT) sensor connector.
2. Loosen the clamp a the air cleaner assembly.
3. Remove the push pin attachment from the outlet resonator/duct assembly to support bracket.
4. Loosen the clamp at the throttle body assembly.
5. Disconnect the positive crankcase ventilation (PCV) fresh air vent hose at the cam cover.
6. Remove the outlet resonator/duct assembly.
Notice: Cover the throttle body with a shop towel. Using air, clean the base of the throttle body to prevent debris from entering the manifold when the throttle body is removed.
7. Cover the throttle body opening with a shop towel and use the shop air to remove any dirt at the base of the throttle body.
8. Disconnect the electrical connector at throttle body.
9. Remove the throttle body bolts.
10. Remove the throttle body.
Important: The throttle body-to-manifold gasket is not reusable.
11. Remove the gasket and discard.
Notice: Cover the intake manifold opening with a shop towel whenever the throttle body is removed to prevent foreign material entry.
12. Block the intake manifold opening with a clean shop towel to prevent dirt from entering.
Installation Procedure
1. Remove the shop towel from the throttle body opening.
2. Install the throttle body gasket.
Notice: Refer to Fastener Notice.
3. Install the throttle body assembly and bolts.
Tighten the throttle body-to-intake manifold bolts - L61 to 10 N.m (89 lb in).
4. Connect the throttle body electrical connector.
5. Position the outlet resonator/duct assembly into position.
6. Connect PCV fresh air vent hose assembly.
7. Tighten the clamp at throttle body assembly.
8. Position the outlet resonator/duct assembly up with support bracket and install the push-pin.
9. Tighten the clamp at the air cleaner assembly.
10. Connect the IAT sensor connector.
11. Turn the ignition ON for one minute while the engine control module (ECM) automatically relearns throttle position.