Page 689 of 2103
FUEL SUPPLY Fuel Filter.
REMOVAL SERVICE
P O I N T S
EYE BOLT REMOVAL
Hold the fuel filter with a spanner and remove the eye bolt.
Caution
As there will be some pressure remaining in the fue l
pipe line, coverit with a shop towel to prevent fuel from
spraying out.
FUEL MAIN PIPE DISCONNECTION
Hold the fuel filter with a spanner and loosen the flare nut.
Then disconnect the fuel main pipe.
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Page 691 of 2103

CONTENTS
GENERAL INFORMATION. . . . . . . . . . . . . . . . . .2SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . 3
LUBRICANT3THERMOSTAT. . . . . . . . . . . . . . . . . . . . . . . . . . . .13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE. . . . . . . . . . . . . . . . . . . . .7TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . .4
Engine Coolant Concentration Test. . . . . . . . . . . .7.
Engine Coolant Leak Check . . . . . . . . . . . . . . . . . .
7WATER HOSE ‘AND PIPE
. . . . . . . . .
Engine Coolant Replacement. . . . . . . . . . . . . . . . .7 AND
Radiator Cap Valve Opening Pressure CheckENGINE>. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7WATER PUMP
RADIATOR. . . . . . . . . .18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 ENGINE (NON-TURBO)>
ENGINE (TURBO) AND , , S E A L A N T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3ENGINE>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Page 692 of 2103
14-2ENGINE COOLING General Information
GENERAL INFORMATION , ,
The cooling system is designed to keep every partthat the heat absorbed by the coolant may be of the engine at appropriate temperature in diated into the air.
er condition the engine may be operated.
The cooling of the water-cooled, pressureThe water pump is of the centrifugal type and is
driven by the
the
forced circulation type in which the water pump crankshaft. .
pressurizes coolant and circulates it throughout th e
engine: If the coolant temperature exceeds the
scribed temperature, the thermostat opens to circu-
late the coolant through the radiator as well so
and is cooled the
CONSTRUCTION DIAGRAM
Engine (Non-turbo)>
Radiator
Radi
.
oil cooler hose and pipe
Engine (Turbo)>
Radiator fan assembly
(Air cooled) oil cooler hose and pipetank
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G e n e r a l
ENGINE COOLING
Engine>
Radiator fan assemblyReserve tank
(Airoilcooler
cooled) oil cooler hose and pipe
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
ThermostatValve opening temperature of Engine (Non-turbo)90.5 (195) thermostat Engine (Turbo) and Engine 82 (180)
Full-opening temperature of Engine (Non-turbo)
102 (216)
thermostat
Engine (Turbo) and Engine95 (203),
Radiator cap valve opening pressure (psi) Engine (Non-turbo)9 4 - 1 2 2 ( 1 4 - 1 8 )
Engine (Turbo) and Engine
LUBRICANT
ItemQuantity
Engine coolant HIGH QUALITY ETHYLENE GLYCOL ANTIFREE ZE COOLANT7.0 (7.4)
SEALANT
ItemSpecified sealant,
Thermostat case Engine (Turbo) and Engine>
Mitsubishi Genuine Parts No. or equivalent:
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E N G I N E C O O L I N G
TROUBLESHOOTING
OVERHEAT
Probable cause
Inoperative electric cooling fan
Water leaks
Faulty electrical motor ,
Faulty radiator fan
Damaged radiator core joint
Corroded or cracked hoses
(radiator hose, heater hose, etc.)
Remedy
Replace
R e p l a c e
Replace
Replace
.
Faulty radiator cap valve or Replace
spring
Cracked intake manifold
Cracked thermostat housing
R e p l a c e
Loose bolts or leaking gasket in
water outlet fitting Torque again or replace gasket
Loose bolts or leaking gasket in
water inlet fitting Torque bolts again or replace gasket
Faulty Loose water pump mounting bolts or
leaking gasket
Loose thermostat housing bolts or
gasket
automatic transaxle oil
operation
Others
or collapsed hose and pipe
Loose hose and pipe connection
engine coolant
Too high an anti-freeze
concentration
Torque bolts again or replace . . .
.
Loose or broken drive belt
Damaged or blocked (insufficiently
ventilated) radiator fins
Faulty thermostat operation. .
Correct
Replace .
Faulty water pump operation .
Water passage clogged with slime orClean
rust deposit or foreign substance, . .
NO RISE IN TEMPERATURE
,
.
Probable cause
Faulty thermostatRemedy
Replace
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ENGINE COOLING Troubleshooting
TROUBLESHOOTING HINTS
Engine (Non-turbo)>
1. Only the radiator fan does not operate. l Check fusible link No. 7.
2. Only the condenser fan does not operate. l Check dedicated fuse No. 9.
3. The radiator fan and condenser fan do’ not operate in the low speed mode, but operate
otherwise.
4. The radiator fan and condenser fan do not
operate in the high speed mode, ‘but
otherwise.
lCheck the radiator fan motor relay and
condenser fan motor relay (HI).
l Check the power-train control module.
l Check the radiator fan motor relay (LO)
and condenser fan motor relay (LO).
l Check the powertrain control module.
Fan Operating Mode
.
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14-6ENGINE COOLING
Engine (Turbo) and Engine>
1. Only the radiator fan does not operate.
l Check fusible link No. 7.
2. Only the condenser fan does not operate.
l Check dedicated fuse No. 9.
3. The radiator fan and condenser fan do not operate in the low speed mode, but operate
otherwise.
l Check the radiator fan motor relay (LO)
and condenser fan motor relay (LO).
l Check the engine control module.
(Refer to GROUP Troubleshooting.)
I -* I.
4. The radiator fan and fan do not
Fan Operating Mode operate in the high speed mode, but
lCheck the, radiator’ fan motor
fan ,
lCheck en
(Refer to,
.
Air conditioning switch
OFF
OFF
OFF
ON
ON
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