Throttle Body Assembly

Throttle Body Removal:

Model B115 Throttle Body Assembly:

CLEANING ON CAR
The throttle bore and valve deposits may be cleaned on-vehicle, using carburetor cleaner and a parts cleaning brush. Do Not use a cleaner that contains methyl ethyl ketone, an extremely strong solvent, and not necessary for this type of deposit.

CAUTION: Throttle body should not be soaked in an immersion-type cleaner. Loss of factory installed lubricant could result. The Throttle Position Sensor(TPS) and Idle Air Control (IAC) valve should NOT come in contact with solvent or cleaner as they may be damaged.



REMOVE
^ Disconnect negative battery terminal.
^ Partially drain radiator to allow coolant hoses at throttle body to be removed.
^ Air inlet duct.
^ IAC valve and TPS electrical connectors.
^ Vacuum harness connector.
^ Coolant hoses at throttle body.

Throttle body
^ Throttle, Transmission control, and cruise control cables.
^ Throttle body retaining bolts.
^ Throttle body assembly.
^ Flange gasket and discard.
^ Discard gasket

CLEAN
Gasket surface on intake manifold.

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

TRANSFER
Inspect for parts to be transferred to throttle body.
Transfer parts according to component repair procedures
INSTALL
^ New flange gasket.
^ Throttle body assembly.
^ Throttle body retaining bolts.

Tighten
Throttle body attaching bolts to 25.0 Nm (18 lb ft)

^ Throttle, Transmission control, and cruise control cables.

NOTICE: Be sure throttle and cruise control linkage does not hold throttle open.
^ Coolant hoses to throttle body.
^ Vacuum harness connector.
^ IAC valve and TPS electrical connectors.
^ Air inlet duct.
^ Refill radiator to replace lost coolant.
^ Negative battery terminal.

INSPECT
With the engine "OFF," check to see that the accelerator pedal is free:
Depress pedal to the floor and release.

ADJUST
Adjust minimum throttle valve position refer to Adjustments.
Adjustments

IDLE LEARN PROCEDURE
Any time the battery is disconnected, the programmed position of the Idle Air Control (IAC) valve pintle is lost, and replaced with a "default" value. To return the IAC valve pintle to the correct position, the Idle Learn Procedure must be performed. Refer to Adjustments. Adjustments