Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Dakota 2000-2001.2003.2005 Approved Dodge Dakota 2000 00AN_7
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AN COOLING SYSTEM 7-1
COOLING SYSTEM
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION COOLANT LEVEL CHECK . . . . . . . . . . . . . . . . . . 28
COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 2 COOLING SYSTEM--DRAINING AND
COOLANT RESERVE/OVERFLOW SYSTEM . . . . . 5 FILLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
ENGINE ACCESSORY DRIVE BELTS. . . . . . . . . . . 5 COOLING SYSTEM--CLEANING/REVERSE
RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 FLUSHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 COOLANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
WATER PUMP BYPASS--4.7L . . . . . . . . . . . . . . . 6 COOLANT SELECTION AND ADDITIVES . . . . . . 30
WATER PUMP BYPASS--3.9/5.9L ENGINES. . . . 6 REMOVAL AND INSTALLATION
THERMOSTAT--3.9L/5.9L ENGINES . . . . . . . . . . 7 COOLANT RESERVE/OVERFLOW TANK . . . . . . . 30
THERMOSTAT--4.7L ENGINE . . . . . . . . . . . . . . . 7 WATER PUMP--2.5L ENGINE . . . . . . . . . . . . . . 30
AUTOMATIC TRANSMISSION OIL COOLERS. . . . 8 WATER PUMP--3.9L/5.9L ENGINES . . . . . . . . . 32
AUTOMATIC BELT TENSIONER . . . . . . . . . . . . . . 8 WATER PUMP 4.7L ENGINES . . . . . . . . . . . . . . 35
BLOCK HEATER . . . . . . . . . . . . . . . . . . . . . . . . . . 9 WATER PUMP BYPASS HOSE--3.9/5.9L
RADIATOR PRESSURE CAP . . . . . . . . . . . . . . . . 10 ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
HOSE CLAMPS . . . . . . . . . . . . . . . . . . . . . . . . . . 10 THERMOSTAT--3.9L/5.9L ENGINES . . . . . . . . . 39
VISCOUS FAN DRIVE . . . . . . . . . . . . . . . . . . . . . 11 THERMOSTAT--2.5L ENGINE . . . . . . . . . . . . . . 42
COOLING SYSTEM FAN . . . . . . . . . . . . . . . . . . . 11 THERMOSTAT-- 4.7L ENGINE . . . . . . . . . . . . . . 43
DIAGNOSIS AND TESTING TRANSMISSION OIL COOLER LINES. . . . . . . . . 44
ON-BOARD DIAGNOSTICS (OBD) . . . . . . . . . . . 12 RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
DRB SCAN TOOL . . . . . . . . . . . . . . . . . . . . . . . . 13 ENGINE BLOCK HEATER . . . . . . . . . . . . . . . . . . 46
WATER PUMP TESTS. . . . . . . . . . . . . . . . . . . . . 13 ACCESSORY DRIVE BELT--2.5L ENGINE . . . . . 47
PRELIMINARY CHECKS . . . . . . . . . . . . . . . . . . . 14 ACCESSORY BELT REPLACEMENT--4.7L
COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 15 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
ELECTRIC COOLING FAN . . . . . . . . . . . . . . . . . . 20 ACCESSORY DRIVE BELT--3.9L/5.9L
RADIATOR COOLANT FLOW CHECK . . . . . . . . . 21 ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
COOLING SYSTEM--TESTING FOR LEAKS . . . . 21 ACCESSORY DRIVE BELT TENSIONER--2.5L . . 50
VISCOUS FAN DRIVE--3.9L/4.7L and 5.9L AUTOMATIC BELT TENSIONER 3.9L/5.9L
ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 ENGINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
ACCESSORY DRIVE BELT DIAGNOSIS. . . . . . . . 24 AUTOMATIC BELT TENSIONER--4.7L
THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
RADIATOR CAP-TO-FILLER NECK IDLER PULLEY--2.5L/3.9L/5.9L ENGINES . . . . 51
SEAL--PRESSURE RELIEF CHECK . . . . . . . . . 26 IDLER PULLEY--4.7L ENGINE NON A/C . . . . . . 52
RADIATOR CAP--PRESSURE TESTING. . . . . . . 26 RADIATOR DRAINCOCK . . . . . . . . . . . . . . . . . . . 52
COOLANT--LOW LEVEL AERATION . . . . . . . . . 27 VISCOUS FAN DRIVE . . . . . . . . . . . . . . . . . . . . . 53
COOLING SYSTEM--DEAERATION . . . . . . . . . . 27 ELECTRIC FAN . . . . . . . . . . . . . . . . . . . . . . . . . . 54
SERVICE PROCEDURES CLEANING AND INSPECTION
COOLANT--ROUTINE LEVEL CHECK. . . . . . . . . 27 RADIATOR CAP . . . . . . . . . . . . . . . . . . . . . . . . . 55
COOLANT SERVICE . . . . . . . . . . . . . . . . . . . . . . 27 RADIATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
COOLANT--ADDING ADDITIONAL. . . . . . . . . . . 28 WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7-2 COOLING SYSTEM AN
FAN BLADE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . 56
SPECIFICATIONS SPECIAL TOOLS
COOLING SYSTEM CAPACITIES. . . . . . . . . . . . . 56 COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
ACCESSORY DRIVE BELT TENSION--2.5L
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
DESCRIPTION AND OPERATION maintains normal operating temperature and pre-
vents overheating.
COOLING SYSTEM The cooling system also provides a means of heat-
ing the passenger compartment and cooling the auto-
DESCRIPTION matic transmission fluid (if equipped). The cooling
The cooling system regulates engine operating tem- system is pressurized and uses a centrifugal water
perature. It allows the engine to reach normal oper- pump to circulate coolant throughout the system.
ating temperature as quickly as possible. It also
Fig. 1 Engine Cooling System Flow--2.5L Engine--Typical
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