coolant temperature MITSUBISHI 380 2005 User Guide

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.

SPECIFICATIONS
ENGINE COOLING14-42
SPECIFICATIONS
FASTENER TIGHTENING SPECIFICATIONSM1141005000346
ITEM SPECIFICATION
Cylinder block drain plug 39
5 Nm (29 3 ft-lb)
Radiator
Front end structure bar bolt M8
10 11 2 Nm (98 17 in-lb)
M8
20 22 4 Nm (16 3 ft-lb)
Thermostat
Control harness bolt 5.0
1.0 Nm (44 9 in-lb)
Grounding bolt M6 9.0
2.0 Nm (80 17 in-lb)
M8 22
4 Nm (16 3 ft-lb)
Water inlet fitting bolt 19
1 Nm (14 1 ft-lb)
Water hose and water pipe
Engine coolant temperature sensor 29
10 Nm
Thermostat housing bolt 19
1 Nm (14 1 ft-lb)
Water pump inlet pipe 11
1 Nm (98 8 ft-lb)
Water pump
Water pump bolt M8 42
8 Nm (31 6 ft-lb)
M10 24
3 Nm (18 2 ft-lb)
Water pump bracket bolt 24
3 Nm (18 2 ft-lb)

SPECIFICATIONS
ENGINE COOLING14-43
SERVICE SPECIFICATIONM1141000300449
CAPACITIESM1141005100138
SEALANTSM1141000500368
ITEM STANDARD VALUE LIMIT
Fan Controller V A/C OFF 1 or less -
A/C ON Repeat
8.2
2.6
System voltage
2.6-
High-pressure valve opening pressure of radiator cap kPa (psi) 93
123 (14 18) Minimum 83 (12)
Thermostat Valve opening temperature
of thermostat
C (F)3.8L Engine 88
1.5 (190 3)
-
Full-opening temperature
of thermostat
C (F)3.8L Engine 100 (212)
-
Valve lift mm (in) 3.8L Engine 9.0 (0.35) or more
-
ITEM
QUANTITY dm3 (qt)
Long life antifreeze coolant or an equivalent 3.8L Engine 8.7 (9.2)
ITEM SPECIFIED SEALANT
Cylinder block drain plug 3M
AAD Part No.8731 or equivalent
Engine coolant temperature sensor

PRECAUTIONS BEFORE SERVICE
GENERAL00-24
SERVICING ELECTRICAL SYSTEMM1001011900057
Battery posts, terminals and related accessories con-
tain lead and lead compounds. WASH HANDS AFTER
HANDLING.
1. Note the following before proceeding with working on the
electrical system.
Never perform unauthorized modifications to any electrical
device or wiring. Such modifications might lead to a vehicle
malfunction, over-capacity or short-circuit that could result in
a fire in the vehicle.
Before connecting or disconnecting the negative bat-
tery cable, be sure to turn the ignition switch to the
"LOCK" (OFF) position and turn off the lights (If this is
not done, there is the possibility of semiconductor
parts being damaged).
After completion of the work (and the negative battery
terminals is connected), warm up the engine and allow
it to idle for approximately 10 minutes under the condi-
tions described below in order to stabilize engine con-
trol conditions, and then check to be sure that the idle
is satisfactory.
Engine coolant temperature: 85 to 95C (185 to
203
F)
Lights and all accessories: OFF
Transaxle: "N" or "P" position
Steering wheel: straight-forward position
2. When servicing the electrical system, disconnect the
negative cable terminal from the battery.
VEHICLE WASHINGM1001012000057
If high-pressure car-washing equipment or steam car-washing
equipment is used to wash the vehicle, be sure to maintain the
spray nozzle at a distance of at least approximately 50 cm (20
inches) from any plastic parts and all opening parts (doors, lug-
gage compartment, etc.).

RECOMMENDED LUBRICANTS AND LUBRICANT CAPACITIES TABLE
GENERAL00-36
SELECTION OF COOLANT
.
COOLANT
Relationship between Coolant Concentration and Specific Gravity
If the concentration of the coolant is below 30%, the anti-corrosion property will be adversely
affected. In addition, if the concentration is above 50%, both the anti-freeze and engine cooling
properties will decrease, affecting the engine adversely. For these reasons, be sure to maintain
the concentration level within the specified range.
Do not use a mixture of different brands of anti-freeze.
Example
The safe operating temperature is
15C (5 F) when the specific gravity is 1.058 at the coolant temperature
of 20
C (68F) ENGINE COOLANT TEMPERATURE
C (F) AND SPECIFIC GRAVITYFREEZING
TEMPERATURESAFE OPERATING
TEMPERATURECOOLANT
CONCENTRATION
(SPECIFIC
VOLUME)
10 20 30 40 50
C (F)C (F)%
1.054 1.050 1.046 1.042 1.036
16 (3.2)11 ( 1 2 . 2 )30
1.063 1.058 1.054 1.049 1.044
20 (4)15 (5)35
1.071 1.067 1.062 1.057 1.052
25 (13)20 (4)40
1.079 1.074 1.069 1.064 1.058
30 (22)25 (13)45
1.087 1.082 1.076 1.070 1.064
36 (32.8)31 (23.8)50
1.095 1.090 1.084 1.077 1.070
42 (44)37 (35)55
1.103 1.098 1.092 1.084 1.076
50 (58)45 (49)60

MAINTENANCE SERVICE
GENERAL00-47
6. Securely insert the dipstick.
NOTE: The transmission fluid should always be replaced
under the following conditions:
.
When troubleshooting the transaxle.
When overhauling the transaxle.
When the transmission fluid is noticeably dirty or burnt
(driving under severe conditions).
TRANSMISSION FLUID CHANGE
Refer to GROUP 23A, Automatic Transmission - On-vehicle
Service P.23A-296.
12. ENGINE COOLANT (CHANGE)M1001003100357
Check the cooling system parts such as the radiator, heater
and oil cooler hoses, thermostat and their connections for leak-
age and damage.
.
CHANGING COOLANT
1. Set the temperature control knob to the "HOT" position.
2. Run the engine until the engine coolant warms, and then
stop the engine.
When removing the radiator cap, use care to avoid
contact with hot coolant or steam. Place a shop towel
over the cap and turn the cap counterclockwise a lit-
tle to let the pressure escape through the vinyl tube.
After relieving the steam pressure, remove the cap by
slowly turning it counterclockwise.
3. Drain the water from the radiator, heater core and engine
after unplugging the radiator drain plug and removing the
radiator cap.

MAINTENANCE SERVICE
GENERAL00-48
4. Drain the water in the water jacket by unplugging the drain
plug of the cylinder block.
5. Remove the radiator condenser tank assembly and drain the
coolant.
6. Drain the coolant then clean the path of the coolant by
injecting water into the radiator from the radiator cap area.
7. Apply the designated sealant to the screw area of the
cylinder block drain plug, and then tighten to the standard
torque.
Specified sealant: Loctite 577 or equivalent
Tightening torque:
<3.8L Engine> 39
5 Nm
8. Securely tighten the radiator drain plug.
9. Assemble the radiator condenser tank assembly.
Do not use alcohol or methanol anti-freeze or any engine
coolants mixed with alcohol or methanol anti-freeze. The
use of an improper anti-freeze can cause corrosion of the
aluminum components.
10.By referring to the section on coolant, select an appropriate
concentration for safe operating temperature within the
range of 30 to 60%. Use special tool MB991871 to refill the
coolant. A convenient mixture is a 50% water and 50%
antifreeze solution [freezing point:
31C (32.8 F)].
Recommended antifreeze: Long Life Antifreeze
Coolant or an equivalent
Quantity:
<3.8L Engine> 8.7 Litres
NOTE: For how to use special tool MB991871, refer to its
manufacturer’s instructions.
11.Reinstall the radiator cap.
12.Start the engine and let it warm up until the thermostat
opens.
13.After repeatedly revving the engine up to 3,000 r/min
several times, stop the engine.

ENGINE AND EMISSION CONTROL17-2
EMISSION CONTROL . . . . . . . .17-76
GENERAL DESCRIPTION . . . . . .
17-76
DIAGNOSIS . . . . . . . . . . . . . . . . . .17-76
SPECIAL TOOLS. . . . . . . . . . . . . .17-76
VACUUM HOSES . . . . . . . . . . . . .17-77
VACUUM HOSE ROUTING. . . . . . . . . . 17-77
VACUUM CIRCUIT DIAGRAM . . . . . . . 17-78
VACUUM HOSE INSTALLATION . . . . . 17-78
VACUUM HOSE CHECK. . . . . . . . . . . . 17-79
POSITIVE CRANKCASE VENTILATION
SYSTEM . . . . . . . . . . . . . . . . . . . . .
17-79
GENERAL DESCRIPTION (POSITIVE
CRANKCASE VENTILATION SYSTEM)17-79
COMPONENT LOCATION . . . . . . . . . . 17-80
POSITIVE CRANKCASE VENTILATION
SYSTEM CHECK. . . . . . . . . . . . . . . . . . 17-80
POSITIVE CRANKCASE VENTILATION
VALVE CHECK . . . . . . . . . . . . . . . . . . . 17-80
EVAPORATIVE EMISSION CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . .
17-81
GENERAL DESCRIPTION (EVAPORATIVE
EMISSION SYSTEM) . . . . . . . . . . . . . . . 17-81
COMPONENT LOCATION . . . . . . . . . . . 17-82
PURGE CONTROL SYSTEM CHECK
(PURGE FLOW CHECK) . . . . . . . . . . . . 17-82
EVAPORATIVE EMISSION PURGE
SOLENOID CHECK . . . . . . . . . . . . . . . . 17-83
MASS AIRFLOW SENSOR CHECK . . . 17-84
ENGINE COOLANT TEMPERATURE
SENSOR CHECK . . . . . . . . . . . . . . . . . . 17-84
INTAKE AIR TEMPERATURE SENSOR
CHECK. . . . . . . . . . . . . . . . . . . . . .17-84
EVAPORATIVE EMISSION CANISTER
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
17-81
REMOVAL AND INSTALLATION . . . . . . 17-81
INSPECTION . . . . . . . . . . . . . . . . . . . . . 17-81
CATALYTIC CONVERTER . . . . . .17-84
GENERAL DESCRIPTION (CATALYTIC
CONVERTER) . . . . . . . . . . . . . . . . . . . . 17-84
SPECIFICATIONS . . . . . . . . . . 17-85
FASTENER TIGHTENING
SPECIFICATIONS . . . . . . . . . . . . . . . . . 17-85

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-81
EVAPORATIVE EMISSION CONTROL SYSTEM
GENERAL DESCRIPTION (EVAPORATIVE EMISSION SYSTEM)M1173005100706
The evaporative emission (EVAP) system prevents
fuel vapors generated in the fuel tank from escaping
into the atmosphere.
Fuel vapors from the fuel tank flow through the vapor
pipe/hose to be stored temporarily in the EVAP can-
ister.
When the vehicle is in operation, fuel vapors stored
in the EVAP canister flow through the EVAP purge
solenoid, purge port and intake manifold plenum to
the combustion chamber.When the engine coolant temperature is low or when
the intake air quantity is small (when the engine is at
idle, for example), the Engine-ECU brings the EVAP
purge solenoid into the OFF state to shut off the fuel
vapor flow to the intake manifold plenum. This
ensures driveability when the engine is cold or run-
ning under low load and also stabilizes the emission
level.
SYSTEM DIAGRAM

EMISSION CONTROL
ENGINE AND EMISSION CONTROL17-83
Required Special Tool:
MB995061: Purge Flow Indicator
1. Disconnect the purge hose from the evaporative emission
(EVAP) purge solenoid, and connect special tool MB995061
between the EVAP purge solenoid and the purge hose.
2. Before inspection, set the vehicle in the following conditions:
Engine coolant temperature: 80 95C (176 203F)
Lights, electric cooling fan and accessories: OFF
Transaxle: P range
3. Run the engine at idle for more than four minutes.
4. Check the purge flow volume when engine is revved
suddenly several times.
Standard value: Momentarily 20 cm
3/s (2.5 SCFH) or
more.
5. If the purge flow volume is less than the standard value,
check it again with the vacuum hose disconnected from the
EVAP canister. If the purge flow volume is less than the
standard value, check the vacuum port and the vacuum
hose for clogging. Also check the EVAP purge solenoid. If
the purge flow volume is at the standard value, replace the
EVAP canister.
EVAPORATIVE EMISSION PURGE SOLENOID
CHECK
M1173001700289
1. Disconnect the vacuum hose (black, black with red paint
mark) from the evaporative emission (EVAP) purge
solenoid.
NOTE: When disconnecting the vacuum hose, always place
an identification mark so that it can be reconnected at its
original position.
2. Disconnect the harness connector.
3. Connect a hand vacuum pump to nipple (A) of the EVAP
purge solenoid (refer to the illustration at left).
4. As described in the chart below, check airtightness by
applying a vacuum with voltage applied directly from the
battery to the EVAP purge solenoid valve and without
applying voltage.
BATTERY POSITIVE
VOLTAGENORMAL CONDITION
Applied Vacuum leaks
Not applied Vacuum maintained