2005 MITSUBISHI 380 Engine

THERMOSTAT
ENGINE COOLING14-35
THERMOSTAT
REMOVAL AND INSTALLATIONM1141002400475
Pre-removal and Post-installation Operation
Engine Coolant Draining and Refilling (Refer to 27).
Engine Cover Removal and Installation (Refer to GROUP
11C, Engine Assembly 11A-14).
Engine Control Unit (ECU) Removal and Installation
(Refer to GROUP 00, General 00-7).
Air Cleaner Removal and Installation (Refer to GROUP
15, Air Cleaner 4).
Strut Tower Bar Removal and Installation (Refer to
GROUP 42, Strut Tower Bar 12).
Battery and Battery Tray Removal and Installation
REMOVAL STEPS
1. LEFT BANK HEATED OXYGEN
SENSOR (REAR) CONNECTOR
2. LEFT BANK HEATED OXYGEN
SENSOR (FRONT) CONNECTOR
3. RIGHT BANK HEATED OXYGEN
SENSOR (REAR) CONNECTOR
4. RIGHT BANK HEATED OXYGEN
SENSOR (FRONT) CONNECTOR
5. THROTTLE BODY ASSEMBLY
CONNECTOR
6. EVAPORATIVE EMISSION
PURGE SOLENOID CONNECTOR7. MANIFOLD ABSOLUTE
PRESSURE SENSOR
CONNECTOR
8. POWER STEERING PRESSURE
SWITCH CONNECTOR
9. CONTROL WIRING HARNESS
AND WIRING HARNESS
COMBINATION CONNECTOR
10. KNOCK SENSOR CONNECTOR
11. CRANKSHAFT POSITION
SENSOR CONNECTOR
13. INJECTOR CONNECTORREMOVAL STEPS (Continued)

THERMOSTAT
ENGINE COOLING14-36
14. ENGINE COOLANT
TEMPERATURE SENSOR
CONNECTOR
15. CAPACITOR CONNECTOR
16. CAMSHAFT POSITION SENSOR
CONNECTOR
17. INHIBITOR SWITCH SENSOR
CONNECTOR
18. A/T CONTROL SOLENOID VALVE
ASSEMBLY CONNECTOR
19. OUTPUT SHAFT SPEED
SENSOR CONNECTOR
20. INPUT SHAFT SPEED SENSOR
CONNECTOR REMOVAL STEPS (Continued)
REMOVAL STEPS
<> >>B<<21. RADIATOR LOWER HOSE
CONNECTION22. WATER INLET FITTING>>A<<23. THERMOSTATREMOVAL STEPS (Continued)

THERMOSTAT
ENGINE COOLING14-37
REMOVAL SERVICE POINT
.
<> RADIATOR LOWER HOSE DISCONNEC-
TION
Make mating marks on the radiator hose and the hose clamp.
Disconnect the radiator hose.
INSTALLATION SERVICE POINTS
.
>>A<< THERMOSTAT INSTALLATION
Make absolutely sure that no oil adheres to the rubber ring
of the thermostat. Also do not fold or scratch the rubber
ring during installation.
Install the thermostat so that the jiggle valve is facing straight
up. Be careful not to fold or scratch the rubber ring.
.
>>B<< RADIATOR LOWER HOSE CONNECTION
1. Insert each hose as far as the projection of the water inlet
fitting.
2. Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.

THERMOSTAT
ENGINE COOLING14-38
INSPECTIONM1141002500450.
Thermostat Check
1. Immerse the thermostat in water, and heat the water while
stirring. Check the thermostat valve opening temperature.
Standard value:
Valve opening temperature:
88
1.5C (190 3F)
2. Check that the amount of valve lift is at the standard value
when the water is at the full-opening temperature.
NOTE: Measure the valve height when the thermostat is
fully closed, and use this measurement to compare the
valve height when the thermostat is fully open.
Standard value:
Full-opening temperature:
100
C (212F)
Amount of valve lift:
9.0 mm (0.35 inch) or more

WATE R P U M P
ENGINE COOLING14-39
WAT E R P U M P
REMOVAL AND INSTALLATIONM1141002700498
INSTALLATION SERVICE POINT
.
>>A<< O-RING INSTALLATION
Do not let the O-ring get contaminated with grease or
engine oil.
Fit the O-ring into the groove of the water pipe ends, and apply
water or coolant to the circumference of the O-ring and the pipe
bores to insert the pipe assembly.
Pre-removal and Post-installation Operation
Engine Coolant Draining and Refilling (Refer to 27).
Timing Belt Removal and Installation (Refer to GROUP
11C, Timing Belt 11A-46).
Crankshaft Position Sensor Removal and Installation
(Refer to GROUP 16, Crankshaft Position Sensor 35).
REMOVAL STEPS
1. WATER PUMP BRACKET
2. WATER PUMP3. WATER PUMP GASKET
>>A<<4. O-RINGREMOVAL STEPS (Continued)

WATER HOSE AND WATER PIPE
ENGINE COOLING14-40
WATER HOSE AND WATER PIPE
REMOVAL AND INSTALLATIONM1141003300493
REMOVAL SERVICE POINT
.
<> RADIATOR UPPER HOSE DISCONNEC-
TION
After making mating marks on the radiator hose and hose
clamp, disconnect the radiator hose.
Pre-removal and Post-installation Operation
Thermostat Removal and Installation (Refer to 35).
REMOVAL STEPS
<> >>C<<1. RADIATOR UPPER HOSE
CONNECTION
2. HEATER HOSE CONNECTION
5. THERMOSTAT HOUSING
6. GASKET>>B<<7. ENGINE COOLANT
TEMPERATURE SENSOR
8. WATER PUMP INLET PIPE
>>A<<9. O-RINGREMOVAL STEPS (Continued)

WATER HOSE AND WATER PIPE
ENGINE COOLING14-41
INSTALLATION SERVICE POINTS
.
>>A<< O-RING INSTALLATION
Do not allow engine oil or other grease to adhere to the
O-ring
Insert the O-ring to the water pipe, and coat the outer portion of
the O-ring with water or engine coolant.
.
>>B<< ENGINE COOLANT TEMPERATURE
SENSOR INSTALLATION
Apply the specified sealant to the thread of the engine coolant
temperature sensor, and then tighten it to the specified torque.
Specified Sealant: 3M
AAD Part No. 8731 or equiva-
lent
.
>>C<< RADIATOR UPPER HOSE CONNECTION
1. Insert each hose as far as the projection of the water outlet
fitting.
2. Align the mating marks on the radiator hose and hose
clamp, and then connect the radiator hose.
INSPECTIONM1141003400337.
Water Pipe and Hose Check
Check the water pipe and hose for cracks, damage and clogs.
Replace them if necessary.