Throttle Body: Service and Repair

Throttle Body Part 1:

Throttle Body Part 2:

REMOVAL

1. DRAIN ENGINE COOLANT




2. REMOVE V-BANK COVER
a. Using a 5 mm hexagon wrench, remove the 3 cap nuts.
b. Loosen the V-bank cover fastener counterclockwise.

HINT:
At the time of installation, please refer to the following items.
Press down the V-bank cover fastener.

c. Remove the V-bank cover.

3. REMOVE AIR CLEANER HOSE WITH RESONATOR
a. Disconnect the PCV hose.
b. Disconnect the vacuum hose (from the VSV for the active engine control mount).
c. Loosen the 3 hose clamps, and remove the air cleaner hose with the resonator.

4. DISCONNECT ACCELERATOR CABLE AND THROTTLE CABLE

5. REMOVE THROTTLE BODY




a. Remove the bolt holding the throttle body to the throttle body bracket.

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

b. Disconnect the throttle position sensor connector.
c. Disconnect the IAC valve connector.
d. Disconnect the wire clamp.




e. Disconnect the water bypass hose (from the intake manifold).
f. Disconnect the water bypass hose (from the water inlet housing).
g. Disconnect the air assist hose.
h. Disconnect the fuel vapor feed hose (from the emission control valve set).
i. Disconnect the vacuum hose (from the No.1 ACIS VSV).
j. Disconnect the vacuum hose (from the vacuum tank for the ACIS).




k. Remove the 3 nuts, throttle body and gasket.

HINT:
At the time of installation, please refer to the following items.
Place a new gasket on the air intake chamber.

Torque: 29 N.m (300 kgf.cm, 22 ft.lbf)

INSTALLATION
Installation is in the reverse order of removal.

REPLACEMENT

NOTE:
- Do not give a shock to the throttle position senor.
- Do not disassemble or adjust the throttle opener.

1. REPLACE THROTTLE POSITION SENSOR




a. Remove the 2 screws and throttle position sensor.




b. Reinstall a new throttle position sensor.
1. Check that the throttle valve is fully close.
2. Insert the sensor to the throttle body with it turned counterclockwise by 30 ° to 60 ° against the fully-close valve position.
3. By turning the sensor clockwise, tighten the 2 screws.




2. REPLACE IAC VALVE
a. Remove the 4 screws, bracket, IAC valve and gasket.
b. Place a new gasket on the No.1 throttle body.
c. Reinstall a new IAC valve with the 4 screws and bracket.

3. REPLACE THROTTLE BODIES




a. Remove the 2 screws and protector.




b. Remove the 6 screws, No.1 throttle body, No.2 throttle body and 2 gaskets from the No.1 intake air control valve.




c. Place 2 new gaskets and 2 new O-rings as shown in the illustration.




d. Reinstall a new No.1 throttle body and No.2 throttle body with the 6 screws.

Torque: 6.9 N.m (70 kgf.cm, 61 in.lbf)