Cooling System Fans; Cooling System; Engine Block Heater; External Transmission Oil Cooler-2.5L Engine - Chrysler Stratus RHD 1997 Interactive Electronic Service Manual

FAN MODULE TO RADIATOR
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GENERAL INFORMATION (Continued)

COOLING SYSTEM FANS

All models use electric motor driven cooling system
fans. The fan modules include a motor support and
shroud. The module is fastened to the radiator by
bolts (Fig. 12).
All fan motors are two speed. Attempts to reduce
high temperature gauge reading by increasing engine
speed, at the same vehicle speed, can increase high
temperature.
Fig. 12 Fan Module
AUTOMATIC TRANSMISSION OIL COOLERS
Oil coolers are internal oil to coolant type, mounted
in the radiator left tank (Fig. 13). Rubber oil lines
feed the oil cooler and the automatic transmission.
Use only approved transmission oil cooler hose. Since
these are molded to fit space available, molded hoses
are recommended. Tighten Oil Cooler Hose Clamps
to 2 N·m (18 in. lbs.).
Fig. 13 Transmission Oil Cooler—2.4LEngine
AUTOMATIC TRANSMISSION OIL FASTENERS COOLER NIPPLES EXTERNAL TO AUXILIARY COOLER RETAINING STRAPS TRANSMISSION COOLER INLET OIL COOLER TUBE NUTS AIR SHIELD AIR SHIELD RETURN
EXTERNAL TRANSMISSION OIL COOLER—2.5L
ENGINE
Is a external oil-to-air type mounted ahead of the
cooling module (Fig. 14). This style cooler uses steel
tube and rubber oil lines to feed oil from the internal
cooler to the external and then to the automatic
transmission. Use only approved transmission oil
cooler hose. Since these are molded to fit space avail-
able, molded hoses are recommended.
Fig. 14 Transmission Oil Cooler—2.5LEngine

ENGINE BLOCK HEATER

On all models an engine block heater is available
as an optional accessory. The heater, operated by
ordinary house current (110 Volt A.C.) through a
power cord and connector behind the radiator grille.
Refer to Description and Operation in this section for
more information.

DESCRIPTION AND OPERATION

THERMOSTAT
The engine cooling thermostats are wax pellet
driven, reverse poppet choke type. They are designed
to provide the fastest warm up possible by prevent-
ing leakage through them and to guarantee a mini-
mum engine operating temperature of 88 to 93°C
(192 to 199°F). They also automatically reach wide
open so they do not restrict flow to the radiator as
temperature of the coolant rises in hot weather to
around 104°C (220°F). Above this temperature the
coolant temperature is controlled by the radiator, fan,
and ambient temperature, not the thermostat.

COOLING SYSTEM

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