Throttle Body: Service and Repair

Throttle Body:

REMOVAL
1. DRAIN ENGINE COOLANT
2. DISCONNECT ACCELERATOR CABLE
3. DISCONNECT THROTTLE CABLE




4. REMOVE AIR CLEANER HOSE
a. Disconnect the PCV hose.
b. Loosen the 2 hose clamps, and remove the air cleaner hose.




5. REMOVE THROTTLE BODY
a. Disconnect the throttle position sensor connector.
b. Disconnect the IAC valve connector.
c. Disconnect the water bypass hose (from intake manifold).
d. Disconnect the water bypass hose (from water inlet housing).
e. Disconnect the air assist hose.




f. Remove the 2 bolts, 2 nuts, EGR gas temperature sensor bracket, throttle body and gasket.

HINT: At the time of installation, place a new gasket on the air intake chamber.

Torque: 19.5 N.m (200 kgf.cm, 14 ft.lbf)

INSPECTION




1. CLEAN THROTTLE BODY
a. Using a soft brush and carburetor cleaner, clean the cast parts.
b. Using compressed air, clean all the passages and apertures.

NOTE: To prevent deterioration, do not clean the throttle position sensor and IAC valve.




2. INSPECT THROTTLE VALVE
a. Apply vacuum to the throttle opener.
b. Check that there is no clearance between the throttle stop screw and throttle lever when the throttle valve is fully closed.

3. INSPECT THROTTLE POSITION SENSOR

INSTALLATION
Installation is in the reverse order of removal.