Throttle Body: Service and Repair

REMOVAL PROCEDURE




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 (IAC) valve connectors.
8. Disconnect the coolant hoses from the throttle body.
9. Remove the throttle body retaining nuts.





NOTE: Cover the opening of the intake manifold after removing the throttle body assembly. This will prevent any objects or debris from entering the engine which may cause damage.

10. Remove the throttle body and discard the gasket.
11. Remove the TP sensor. Refer to "Throttle Position Sensor".
12. Remove the IAC valve. Refer to "Idle Air Control Valve".

INSTALLATION PROCEDURE

NOTE: 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.

NOTE: The throttle body may be cleaned following disassembly in a cold immersion-type cleaner. The TP sensor and the IAC valve should not come in contact with any solvent or cleaner, as they may be damaged.

2. Clean the throttle body.
3. Install the TP sensor. Refer to "Throttle Position Sensor".
4. Install the IAC valve. Refer to "Idle Air Control Valve".
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 9 Nm (80 lb-in).




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.

IMPORTANT: Make sure the throttle/cruise control cables do not hold the throttle open. With the engine OFF, check to see that the accelerator pedal is free.

10. Connect the throttle/cruise cables.
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.