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CS
ENGINE BLOCK HEATER (Continued)
INSTALLATION
(1) Clean block core hole and heater seat.
(2) Insert heater assembly with element loop posi-
tioned upward.
(3) With heater seated, tighten center screw
securely to assure a positive seal.
(4) Install power cord plug to heater.
(5) Fill cooling system with coolant to the proper
level (Refer to 7 - COOLING - STANDARD PROCE-
DURE).
ENGINE COOLANT TEMP
SENSOR
DESCRIPTION
The engine coolant temperature sensor threads
into a coolant passage on lower intake manifold near
the thermostat. New sensors have sealant applied to
the threads (Fig. 5).
Fig. 5 ENGINE COOLANT TEMPERATURE SENSOR -
1 - CAMSHAFT POSITION SENSOR
2 - ENGINE COOLANT TEMPERATURE SENSOR
REMOVAL
WARNING: HOT, PRESSURIZED COOLANT CAN
CAUSE INJURY BY SCALDING. COOLING SYSTEM
MUST BE PARTIALLY DRAINED BEFORE REMOV-
ING THE COOLANT TEMPERATURE SENSOR.
(1) Drain cooling system below engine coolant tem-
perature sensor level (Refer to 7 - COOLING - STAN-
DARD PROCEDURE).
(2) Disconnect negative cable from remote jumper
terminal (Fig. 5)
3.5L
(3) With the engine cold, disconnect coolant sensor
electrical connector.
(4) Remove sensor.
INSTALLATION
(1) Install engine coolant temperature sensor (Fig.
5). Tighten sensor to 7 N·m (60 in. lbs.).
(2) Connect electrical connector to sensor.
(3) Fill cooling system. (Refer to 7 - COOLING -
STANDARD PROCEDURE)
ENGINE COOLANT
THERMOSTAT
REMOVAL
WARNING: DO NOT REMOVE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
(1) Disconnect negative cable from remote jumper
terminal.
(2) Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE).
(3) Raise vehicle on hoist.
(4) Disconnect electrical connectors from engine oil
and power steering pressure switches.
(5) Disconnect radiator and heater hoses from
thermostat housing.
(6) Remove thermostat housing bolts (Fig. 6).
(7) Remove housing, thermostat, and gasket.
NOTE: The OEM thermostat is staked in place at the
factory. To ensure proper seating of replacement
thermostat, carefully remove the bulged metal from
the thermostat housing using a suitable hand held
grinder. It is not necessary to restake the replace-
ment thermostat into the thermostat housing.
INSTALLATION
NOTE: The OEM thermostat is staked in place at the
factory. To ensure proper seating of replacement
thermostat, carefully remove the bulged metal from
the thermostat housing using a suitable hand held
grinder. It is not necessary to restake the replace-
ment thermostat into the thermostat housing.
(1) Clean gasket sealing surfaces.
(2) Install thermostat and gasket into thermostat
housing. For ease of installation, install bolts in
housing for thermostat and gasket retention.
(3) Install thermostat and housing to cylinder
block (Fig. 6). Tighten bolts to 12 N·m (105 in. lbs.).
ENGINE 7 - 19
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