Toyota 22030-21030
Throttle Body

One must install the throttle body with motor body assembly on a 1NZ-FE engine control system by first placing a new gasket onto the intake manifold. Fasten the throttle body along with motor body assembly by installing one bolt, three nuts, and torquing them to 9.0 Nm (92 kgf-cm, 80 in-lbf). Second, mount the water filler sub-assembly with hose by applying two nuts at 7.5 Nm (76 kgf-cm, 66 in-lbf) torque and third, install the wire harness with bracket by using one nut at 9.0 Nm (92 kgf-cm, 80 in-lbf). First, join the throttle to the motor body assembly connector after which you should attach both water by-pass hoses. The installation of the air cleaner cap sub-assembly must include air cleaner hose No. 1 and require a hose clamp torque of 3.0 Nm (31 kgf-cm, 27 in-lbf). Starting from the wire harness clamp connect the mass air flow meter connector and ventilation hose No. 2 then attach the vacuum switching valve assembly connector followed by the wire harness clamp. The final step includes two operations: installing both fuel vapor feed hoses on the vacuum switching valve assembly and using a torque of 5.4 Nm (55 kgf-cm, 48 in-lbf) to secure the connector to the negative battery terminal. After which, engine coolant should be added and a leak check should be performed.

Remove the bolt and 3 nuts to detach the throttle with motor body assembly and take out the gasket from the intake manifold.

Disconnect the vacuum switching valve assembly connector, wire harness clamp, ventilation hose No. 2, and the wire harness clamp along with the mass air flow meter connector.

Remove the cylinder head cover No. 2.

Tighten the hose clamp to 3.0 Nm.