Throttle Body: Service and Repair

Throttle Body Removal and Installation

Removal

1. Disconnect the negative battery cable.
2. Disconnect the intake air temperature (IAT) sensor connector.
3. Disconnect the breather hose from the valve cover.




4. Remove the air intake tube.
5. Disconnect the throttle cables by opening the throttle and moving the cable through the release slot.
6. Disconnect the vacuum hoses from the throttle body.
7. Disconnect the throttle position (TP) sensor and the idle air control valve connectors.
8. Disconnect the coolant hoses from the throttle body.




9. Remove the throttle body retaining nuts.
10. Remove the throttle body and discard the gasket.
11. Remove the TP sensor. Refer to Throttle Position Sensor Removal and Installation.




12. Remove the idle air control (IAC) valve. Refer to Idle Air Control Valve Removal and Installation.

Installation

CAUTION: Use care in cleaning old gasket material from machined aluminum surfaces. Sharp tools may damage sealing surfaces.

1. Clean the gasket mating surface on the intake manifold.
2. Clean the throttle body.
3. Install the TP sensor. Refer to Throttle Position Sensor Removal and Installation.
4. Install the IAC valve. Refer to Idle Air Control Valve Removal and Installation.
5. Install the throttle body assembly with a new gasket to the intake manifold.




6. Install the throttle body retaining nuts.

Tighten: Tighten the throttle body retaining nuts to 10 Nm (89 in. lbs.).

7. Connect the TP sensor connector and the IAC valve connector.
8. Connect the coolant hoses to the throttle body.
9. Connect the vacuum hoses to the throttle body.
10. Connect the throttle cable.
11. Install the air intake tube.
12. Connect the breather hose to the valve cover.
13. Connect the IAT sensor connector.
14. Connect the negative battery cable.




15. Fill the cooling system.