Chrysler 1998 Voyager Service Manual page 241

NS/GS
GENERAL INFORMATION
COOLANT PRESSURE BOTTLE . . . . . . . . . . . . 1
COOLING SYSTEM - 2.0L GASOLINE . . . . . . 1
COOLING SYSTEM - 2.5L VM DIESEL . . . . . 1
LOW COOLANT LEVEL SENSOR . . . . . . . . . . . 1
RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DESCRIPTION AND OPERATION
AUTOMATIC BELT TENSIONER . . . . . . . . . . . . 6
BELT TENSION . . . . . . . . . . . . . . . . . . . . . . . . . 5
COOLANT PERFORMANCE
PRESSURE/VENT CAP . . . . . . . . . . . . . . . . . . . 4
THERMOSTAT OPERATION . . . . . . . . . . . . . . . 4
THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . 6
WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . 3
SERVICE PROCEDURES
ADDING ADDITIONAL COOLANT . . . . . . . . . . . 7
DRAINING COOLING SYSTEM . . . . . . . . . . . . . 7
REFILLING COOLING SYSTEM . . . . . . . . . . . . 7
REMOVAL AND INSTALLATION
ENGINE THERMOSTAT- 2.0L GASOLINE . . . 9
GENERAL INFORMATION
COOLING SYSTEM - 2.0L GASOLINE
The 2.0L gasoline engine cooling system consists of
an engine cooling module, thermostat, coolant, a
water pump to circulate the coolant. The engine cool-
ing module may consist of a radiator, electric fan
motors, fan, shroud, coolant reserve system, hoses,
clamps, air condition condenser.
• When the Engine is cold: The thermostat is
closed; the cooling system has no flow through the
radiator. The coolant flows through the engine,
heater system and bypass.
• When the Engine is warm: Thermostat is open;
the cooling system has flow through radiator, engine,
heater system and bypass.
COOLING SYSTEM - 2.5L VM DIESEL
The cooling system has a radiator, coolant, electric
fan motors, shroud, pressure cap, thermostat, coolant
pressure bottle, hoses, a water pump to circulate the
coolant, to complete the circuit. Coolant flow for the
VM diesel engine is shown in (Fig. 1).
COOLING SYSTEM
CONTENTS
page
. . . . . . . . . . . . . . . 5
GENERATOR/POWER STEERING BELT - 2.5L
VM DIESEL . . . . . . . . . . . . . . . . . . . . . . . . . 10
RADIATOR - 2.5L VM DIESEL . . . . . . . . . . . 9
THERMOSTAT - 2.5L VM DIESEL . . . . . . . . . 9
WATER PUMP BELT - 2.5L VM DIESEL . . . 10
WATER PUMP - 2.0L GASOLINE . . . . . . . . . 7
WATER PUMP - 2.5L VM DIESEL . . . . . . . . 8
CLEANING AND INSPECTION
WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . 10
ADJUSTMENTS
BELT TENSION CHART . . . . . . . . . . . . . . . . . 11
BELT TENSION GAUGE METHOD . . . . . . . . . 11
SPECIFICATIONS
COOLING SYSTEM CAPACITY . . . . . . . . . . . . 12
TORQUE CHART . . . . . . . . . . . . . . . . . . . . . . 12
SPECIAL TOOLS
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
COOLANT PRESSURE BOTTLE
2.5L VM DIESEL
This system works with the pressure cap to use
thermal expansion and contraction of the coolant to
keep the coolant free of trapped air. It provides some
reserve coolant to cover minor leaks and evaporation
or boiling losses. The coolant pressure bottle location
for 2.5L diesel is above the cylinder head cover (Fig.
2).
LOW COOLANT LEVEL SENSOR
The low coolant level sensor checks for low coolant
level in the coolant tank. A signal will be sent from
this sensor to the Body Control Module (BCM). When
the BCM determines low coolant level for 30 contin-
uous seconds, the instrument panel mounted low
coolant level warning lamp will be illuminated. The
sensor is located on the front side of the coolant tank
(Fig. 4). For information, refer to Group 8E, Instru-
ment Panel and Gauges.
If this lamp is illuminated, it indicates the need to
fill the coolant tank and check for leaks.
COOLING SYSTEM 7 - 1
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