LS 400 V8-4.0L (1UZ-FE) (1990)
(b) Install a new gasket and throttle body with the two bolts and two nuts.
Torque: 18 N.m (185 kgf.cm, 13 ft.lbf)
HINT: Use bolts 40 mm (1.57 in.) in length.
(c) Install the water by-pass pipe (from rear water bypass joint) to the clamp on the engine wire cover.
(d) Connect the following hoses:
(1) Water by-pass hose to the ISC valve
(2) (USA Spec.)
Vacuum hose to throttle body
(3) (Exc. USA Spec.)
Three vacuum hoses to throttle body
(4) Heater water hose to heater water valve