1991 LEXUS SC400 sensor

(f) Connect the ECT sensor connector (for cooling fan).
(g) Install the ECT sensor wire clamp to the radiator fan shroud.
26. INSTALL RADIATOR RESERVOIR TANK
(a) Install the reservoir tank to the reservoir tank bracket.
(b) Install the reservoir tank with the bracket and 3 bolts.
Torque: 4.9 N.m (50 kgfVcm, 43 in. Vlbf)
(c) Connect the following hoses:
(1) Reservoir hose to water inlet housing
(2) Reservoir hose to radiator
(d) Connect the coolant level sensor connector.
27. INSTALL INTAKE AIR CONNECTOR
(a) Connect the intake air connector to the throttle body.
(b) Install the hose clamp and bolt.
(c) Connect the following hoses to the intake air connector: (1) Air hose (from IAC valve)
(2) Air hose (from air control valve on PS pump)
28. CONNECT VACUUM HOSE (A) (FROM PS AIR CONTROL VALVE) TO AIR INTAKE CHAMBER
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1UZ±FE ENGINE ENGINE MECHANICALEG±201
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12. REMOVE RADIATOR RESERVOIR TANK(a) Disconnect the coolant level sensor connector.
(b) Disconnect the following hoses:(1) Reservoir hose to water inlet housing
(2) Reservoir hose to radiator
(c) Remove the two bolts and reservoir tank bracket.
(d) Disconnect the reservoir tank from the reservoir tank bracket, and remove the reservoir tank.
13. REMOVE RADIATOR (a) Disconnect the water temperature sensor connector.
(b) Disc onnect the wire clamp (for water temperature
sensor) from the radiator fan shrould.
(c) Disconnect the following hoses: (1) Two oil cooler hoses (for cooling fan) from pipes
(2) Two radiator hoses
EM±120
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ENGINE MECHANICAL Cylinder Block
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(i) Remove the bolt holding the engine wire clamp to theheater water valve bracket.
(j) Remove the two bolts holding the engine wire clamp to the body.
(k) Pull out the engine wire from the cabin.
28. REMOVE FRONT EXHAUST PIPE (a) Disconnect the grommet from the floor, and disconnectthe sub±oxygen sensor from the exhaust pipe.
Disconnect the two sub±oxygen sensors.
(b) Remove the four bolts holding the front exhaust pipe to the transmission.
(c) Remove the two bolts and nuts holding the front exhaust
pipe to the center exhaust pipe.
(d) Re mo ve th e fo u r bo lts an d nu ts ho ld in g th e fro n t
exhaust pipe to the catalytic converter. Remove the pipe
support stay, front exhaust pipe and three gaskets.
29. REMOVE CATALYTIC CONVERTERS (MAIN) Remove the three nuts, catalytic converter and gasket. Re-
move the two catalytic converters.
EM±126
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ENGINE MECHANICAL Cylinder Block
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3. DISCONNECT ENGINE WIRE FROM TRANSMISSION(a) Disconnect the following connectors:(1) O/D direct clutch speed sensor connector
(2) No.1 speed sensor connector
(3) No.2 speed sensor connector
(4) Neutral start switch connector
(b) Disconnect the five wire clamps from the brackets on the
transmission.
4. SEPARATE ENGINE AND TRANSMISSION (See AT section)
EM±130
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ENGINE MECHANICAL Cylinder Block
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(b) Disconnect the wire clamp from the bracket on thestarter.
(c) Remove the nut, and disconnect the wire.
(d) Disconnect the connector, and remove the starter.
8. REMOVE KNOCK SENSORS (a) Disconnect the two knock sensor connectors.
(b) Using SST, remove the two knock sensors.
SST 09816±30010
9. REMOVE WATER BY±PASS PIPE (a) Remove the two bolts.
(b) Pull out the by±pass pipe from the water pump.
(c) Remove the O±ring from the by±pass pipe.
10. REMOVE ENGINE WIRE (a) Disconnect the following connectors:(1) Oil level sensor connector
(2) Oil pressure switch connector
(b) Remove the three bolts and wire cover from the LH side
of the cylinder block.
(c) Remove the two bolts and engine wire.
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ENGINE MECHANICAL Cylinder BlockEM±133
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(b) Apply seal packing to the sealing groove of the waterpump as shown in the illustration.
Seal packing: Part No.08826±00100 or equivalent
wInstall a nozzle that has been cut to a 2±3 mm
(0.08±0.12 in.) opening.
w Parts must be assembled within 5 minutes of
application. Otherwise the material must be removed
and reapplied.
w Immediately remove nozzle from the tube and reinstall
cap.
(c) Install the water pump with the five bolts, two stud bolts and nut.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
HINT: Use bolts 30 mm (1.18 in.) in length.
6. INSTALL ENGINE WIRE (a) Install the engine wire to the LH side of the cylinder block
with the two bolts.
(b) Install the wire cover with the three bolts.
(c) Connect the following connectors: (1) Oil level sensor connector
(2) Oil pressure switch connector
7. INSTALL WATER BY±PASS PIPE (a) Install a new O±ring to the by±pass pipe.
(b) Apply soapy water to the O±ring.
(c) Pull in the by±pass pipe end into the pipe hole of thewater pump.
(d) Install the water by±pass pipe with the two bolts.
Torque: 18 N Vm (185 kgf Vcm, 13 ft Vlbf)
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ENGINE MECHANICAL Cylinder BlockEM±163
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8. INSTALL KNOCK SENSORS(a) Using SST, install the two knock sensors.
SST 09816±30010
Torque: 44 N Vm (450 kgf Vcm, 33 ft Vlbf)
(b) Connect the two knock sensor connectors.
9. INSTALL STARTER (a) Install the wire clamp to the bracket on the starter.
(b) Connect the wire to the starter with the nut.
(c) Connect the connector to the starter.
(d) Install the starter with the two bolts.
Torque: 39 N Vm (400 kgf Vcm, 29 ft Vlbf)
10. INSTALL RH ENGINE MOUNTING BRACKET
Install the mounting bracket with the four bolts.
Torque: 37 N Vm (380 kgf Vcm, 27 ft Vlbf)
HINT: The RH mounting bracket is marked with ºRº.
11. INSTALL LH ENGINE MOUNTING BRACKET (a) Install the mounting bracket with the four bolts.
Torque: 37 N Vm (380 kgf Vcm, 27 ft Vlbf)
HINT: The LH mounting bracket is marked with ºLº.
(b) Install the engine wire to the mounting bracket with the
bolt.
EM±164
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ENGINE MECHANICAL Cylinder Block
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3. INSTALL DIPSTICK GUIDE FOR TRANSMISSION(a) Install a new O±ring to the dipstick guide.
(b) Apply soapy water to the O±ring.
(c) Connect the dipstick guide end to the tube of the oil pan,
and install the dipstick guide with the bolt.
(d) Install the dipstick.
4. CONNECT ENGINE WIRE TO TRANSMISSION (a) Connect the following connectors:(1) O/D direct clutch speed sensor connector
(2) No.1 speed sensor connector
(3) No.2 speed sensor connector
(4) Neutral start switch connector
(b) Install the five wire clamps to the brackets on the transmission.
EM±166±
ENGINE MECHANICAL Cylinder Block
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