Throttle Body: Service and Repair

THROTTLE BODY ASSEMBLY REPLACEMENT

REMOVAL PROCEDURE
1. Disconnect the negative battery cable.

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.

2. Remove the air cleaner resonator from the throttle body.




3. Disconnect the electrical connector from the idle air control (IAC) valve.




4. Disconnect the electrical connector from the throttle position (TP) sensor.




5. Remove the vacuum hoses at the throttle body (1).
6. Remove the accelerator and cruise control cables from the accelerator cable bracket.
7. Remove the accelerator cable bracket.
8. Remove the throttle body attaching bolts (2).
9. Remove the throttle body from the intake manifold.

INSTALLATION PROCEDURE





1. Refer to Evaporative Emission (EVAP) System Cleaning.

NOTE: The EVAP canister may have released carbon particles which caused this part to fail and may cause damage to other components. Check the EVAP canister for loose carbon before returning the vehicle to service.

2. Inspect the throttle body gasket, replace as necessary.
3. Install the throttle body (1).
4. Install the throttle body attaching bolts (2).

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the throttle body attaching bolts to 10 N.m (89 lb in).

5. Install the accelerator cable bracket.
6. Install the throttle and cruise control cables to the throttle body.
7. Install the vacuum hoses to the throttle body.




8. Connect the electrical connector to IAC sensor.




9. Connect the electrical connector to TP sensor.
10. Install the air cleaner resonator to the throttle body.
11. Connect the negative battery cable.

IMPORTANT: With the engine OFF, check to see that the accelerator pedal is free, by depressing the pedal to the floor and releasing.

12. Reset IAC valve pintle position:
12.1. Turn ON the ignition, with the engine OFF.
12.2. Turn OFF the ignition for 10 seconds.
12.3. Start the engine and inspect for proper idle and throttle operation.