coolant temperature MITSUBISHI GALANT 1989 Service Owners Manual

COOLING- Specifications14-3
Items Specifications
Engine coolant temperature gauge unit ResistanceAt
70°C (158°F)n 104f13.5
Engine coolant temperature sensor (Engine control) ResistanceAt
20°C (68°F)kQ 2.45 f 0.24
At 80°C (176°F)Q 296+32
Air conditioning engine coolant temperature switch
<always closed type>
ON
+ OFF operating temperature“C (“F) 112-118 (234-244
)
Engine coolant temperature switch <always opened type>
(Air conditioning or A/T control)
OFF
+ ON operating temperature“C (“F) 100-104 (212-219
)
Limit
Opening pressure of radiator cap high pressure valvekPa (psi) 65 (9.2)
TORQUE SPECIFICATIONS
MWCG-
ItemsNm ft.lbs.
Radiator upper insulator 9-14
7-10
Reserve tank, bracket installation bolt9-1
4
7-10
Thermosensor to radiator35
25
Automatic transaxle oil coole: hose cramp 4-
6
3-4
Automatic transaxle oil cooler hose mounting bolt 3-5
2-4
Water outlet fitting bolts
17-2012-14
Water inlet fitting bolts
IO-157-10
Engine mount insulator nut (large)60-8043-58
Engine mount insulator nut (small)
\ 30-4022-29
Engine mount bracket to engine
50-6536-47
Bracket between engine mount bracket and engine 17-26
12-19
Water pump installation bolt Bolt head mark “4T”
12-15
9-l 1
Bolt head mark “7T”20-2714-20
dater pump pulley bolt8-106-

7
Jamper pulley, crankshaft pulley20-3014-22
Timing belt front upper cover installation bolt
IO-127-
9
Timing belt front lower cover installation bolt
IO-127-
9
Crankshaft
sprocket installation bolt
110-13080-94
Timing belt B tensioner 15-2211-16
Tension pulley bracket for air conditioning
23-2717-20
Automatic tensioner installation bolt20-2714-20
Tensioner pulley installation bolt43-5531-40
Oil level gauge 12-159-l 1
Front exhaust pipe to exhaust manifold
<FWD>40-5029-36.
<AWD>30-4022-29
Front exhaust pipe bracket
30-4022-29
Exhaust manifold cover (A), (B) <DOHC>
<SOHC-l993 models> 12-15
9-11
Heat protector <SOHC> <Up to 1992 models> 12-159-11
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14-4COOLING-Specifications
Items
Exhaust manifold to cylinder head <SOHC> <Up to 1992 models>
< 1993 models>
<DOHC
>
Engine hanger to engine bracket
Oxygen sensor
Water inlet pipe installation bolt Transaxle side
Engine block side <Up to 1992 models>
< 1993 models>
Engine coolant temperature gauge unit
Engine coolant temperature sensor (Engine control)
Air conditioning engine coolant temperature switch <always closed type>
Engine coolant temperature switch <always opened type>
(Air conditioning or A/T control) Rocker cover installation bolt
Exhaust manifold to turbocharger
Eye bolt (oil pipe)
Air outlet fitting installation bolt
Water pipe
B
Front exhaust pipe to turbocharger
Eye bolt (water pipe)
Water pipe
B clamp
Oil return pipe
Water hose installation bolt
<M8>
<M6>
Nater hose to turbocharger
Ixhaust pipe support bracket
Exhaust pipe support bracket to front exhaust pipe Nm ft.lbs.
15-2011-14
25-3018-22
27-3320-23
25-3018-22
12-15 9-11
40-5029-36
43-55
31-40
IO-157-10
12-15 9-11
IO-127-
9
20-4014-29
30-4022-29
IO-148-10
5-

7
4-5
55-65
40-47
14-19IO-14
9-1
4
7-10
40-5029-36
40-6029-43
35-5025-36
IO-127-

9
8-106-

7
12-15 9-11
IO-127-
9
8-106-

7
30-4222-30
30-4022-29
LUBRICANT Ml4CD-
Item
Engine coolant
Specified lubricant
High quality ethylene glycol
antifreeze coolant Quantity
6.5
dm3(6.9 qts.)
SEALANT
M14CE- Items
Specified sealant
Engine coolant temperature sensor (Engine control) 3M
nut locking Part No.4171
or equivalent
Air conditioning engine coolant temperature switch <always
closed type> Engine coolant temperature switch <always opened type>
(Air conditioning or A/T control)
Engine coolant temperature gauge unit 3M
ATD Part No.8660
or equivalent
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COOLING - Special TooVTroubleshooting
SPECIAL TOOL
1 Tool
Number
Name1 Use
MIT21 0863Radiator cap test Radiator cap test
TROUBLESHOOTINGM14EAAI
Symptom
Overheat Probable cause
Insufficient engine coolant
Too high an anti-freeze concentration Remedy
Replenish
Correct anti-freeze
concentration
Loose or broken drive belt
Replace Inoperative
electric cooling fan
Faulty thermosensor Replace
Faulty electrical motor
Replace
Faulty radiator fan relayReplace
Damaged or blocked (insufficiently ventilated) radiator fins Correct
Water leaks Damaged radiator core joint
Replace
Corroded or cracked hosesReplace
(radiator hose, heater hose, etc.)
Loose bolt or leaking gasket in water outlet fitting
(thermostat)
Loose water pump mounting bolt or leaking gasket
Faulty radiator cap valve or setting of spring
Loose intake manifold bolts or leaking from gasket
Cracked intake manifold
Faulty automatic transaxle oil cooler operation Blocked or collapsed hose and pipe
Loose hose and pipe connection
Faulty thermostat operation
Faulty water pump operation
Water passage clogged with slime or rust deposit or
foreign substance Correct or replace
Correct or replace
Replace
Retorque bolts or replace
gasket
Replace
Replace
Correct
Replace
Replace
Clean
Jo rise in temperature Faulty thermostatReplace
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COOLING -Troubleshootina14-7
L
<Non-Turbo (AWD-A/T), Turbo>
ICSk-iNIq
ci
'ION:H(IG2)
W&FUS$BLE
AUTOCOMPRESSOR
CONTROL UNIT
A-29
'RADIATORFAN MOTOR43 RELAYCHI)cu
A-29
RESISTOR
> 'Mf AToR
m ON:SSC
OFF -p(165'F)
OFF:?8’C(172’F)$5m6‘5I%
66.
B-22-4 m
?
"A
OFF-ON:
102’
C0 KX35-AC-H0612-NY
I(GY) ;
2 "1"1
;-'SX!D%% BRELAY(L0) 0? -
N
d
0-
A-24
2
f
A-15
I
/OFFGE3
1
0N:lBOOkPa(256DS
II 0FF:lSOOkPs
2
(213PSl)
OPERATION l When the engine coolant temperature reaches approximately
85°C (185°F) in the ignition switch
“ON” position, the
therm0 sensor is turned on
to flow electricity through the radiator fan motor relay (coil) and the
therm0 sensor to the ground.
The radiator fan motor relay contact will be
closed.
l Then, electricity will flow through the radiator fan motor and the radiator fan motor relay
(contact) to the ground to rotate the radiator fan
motor.
NOTE
For models equipped with the air conditioning,
refer to GROUP
55-Troubleshooting for in-
formation concerning the operation of the con-
denser fan.
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COOLING -Engine Coolant Temperature Gauge Unit, Engine CoolantTemoerature Sensor and Engine Coolant Temperature Switch14-31
ENGINE COOLANT TEMPERATURE GAUGE UNIT, ENGINE COOLANT
TEMPERATURE SENSOR AND ENGINE COOLANT TEMPERATURE
SWITCHM14oE-
REMOVAL AND INSTALLATION
<DOHC> 30-40
Nm/
gine Coolantlo-14 Nm(Refer to GROUP 00-Maintenance8-10 ft.lbs.Service.)
/ I r lcoolo
Sealant: 3M ATD Part No.8660or equivalent04A0118
<SOHC>
<Up to 1992 models>< 1993 models>
10 12 Nrny~~~~~7-9 ft.lbs. 2
1. Engine coolant temperature gauge unit
2. Engine coolant temperature sensor
(Engine control)3. Air conditioning engine coolanttemperature switch <always closed
type>4. Engine coolant temperature switch, .<always opened type> (Air condltloning
or A/T control)
Sealant: 3M Nut locking PartNo.4171 or equivalent
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14-32COOLING -Engine Coolant Temperature Gauge Unit, Engine Coolant
Temperature Sensor and Engine Coolant Temperature Switch
/
Sensor
J
046003
3
04GOO32
9FUO156
---
--I ‘Oi

l
QQQQQQ2cmn99
INSPECTIONM14OOAM
ENGINE COOLANT TEMPERATURE GAUGE UNIT
Raise the water temperature and measure the resistance if
within the standard value.
Standard value:
104k13.5 Q [at 70°C (158”F)]
ENGINE COOLANT TEMPERATURE SENSOR
(Engine control) <Up to 1992 models>
Raise the water temperature and measure the resistance if
within the standard value.
Standard value:
At
20°C (68°F)
At 80°C (176°F) 2.4520.24

klR
296232 R
<1993 models>
(1) Remove engine coolant temperature sensor from the in- take manifold.
(2) With temperature sensing portion of engine coolant tem- perature sensor immersed in hot water, check resistance
Temperature 1°C (OF)1Resistance (kR)
0 (32)5.8
20 (68)2.4
40
(I
04)1.1
80 (176)0.3
(3) If the resistance deviates from the standard value greatly,
replace the sensor.
AIR CONDITIONING ENGINE
COOLANT TEMPERATURE
SWITCH <Normal closed type>
(1) Immerse the air conditioning engine coolant temperature switch in oil and then heat (by using a gas stove flame or
similar method) so as to increase the oil temperature.
(2) Check to be sure that the air conditioning engine coolant temperature switch is switched OFF when the oil tempera-ture reaches the standard value.
Standard value:
112-l 18°C (234-244°F)
Caution
The oil used above should be engine oil and should be
stirred well while being heated; do not heat more than
necessary.
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COOLING -Engine Coolant Temperature Gauge Unit, Engine Coolant
Temperature Sensor and Engine Coolant Temperature Switch14-33
20R0586
ENGINE COOLANT TEMPERATURE SWITCH
<Normal opened type>
(Air conditioning or A/T control)
(1) Remove the engine coolant temperature switch from the
water outlet fitting.
(2) immerse the engine coolant temperature switch in oil and heat by a gas stove or similar method so as to increase the
oil temperature.
(3) Check to be sure that the engine coolant temperature switch is switched ON when the oil temperature reaches
the standard value.
Standard value:
lOO-104% (212-219°F)
CautionUse engine oil for this test; stir it well while heating,
and do not heat more than necessary.
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1

INTAKE AND EXHAUST -Intake Manifold <SOHC-l 6 VALVE>15-19
16
\305A0220
lo-13 Nm7-9 ft.lbs.
/R24
,,/13-18 ft.lbs.
’15-20 Nm11-14ft.lbs.
11. Engine coolant temperature gauge unitconnector
12. Engine coolant temperature sensor
connector
13. Oxygen sensor connector
14.Distributor connector15.Condenser connector16.TPS connector17.IAC connector18.injector connector19.Control harness
18-2iNm13-18 ft.lbs.
05AO222
4I) 1)+20. Fuel rail, injector and pressure regulator
assembly
21. Insulator
22. Intake manifold stay
23. Intake
manifold24. Intake manifoii gasket
25. Throttle body
1)+26. Throttle body gasket27. EGR valve28. EGR gasket
29. EGR temperature sensor <Vehicles for
California>
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EMISSION CONTROL
SYSTEMS
CONTENTSr.w?API-
CATALYTIC CONVERTER.....................29
EVAPORATIVE EMISSION CONTROL
SYSTEM..........................................15
Air Conditioning Switch........................21
Component Location...........................15
Evaporative Emission Canister................21
Evaporative Emission Purge Solenoid.......21
Fuel Tank Filler Tube Cap Inspection........21
Fuel Tank Pressure Control Valve............21
Purge Control System Inspection
<Non-Turbo> .................................17
Purge Control System Inspection
<Turbo
>
.......................................
18
Purge Control Valve <Turbo>
..............20
Purge Port Vacuum............................19
Volume Air Flow Sensor, Engine Coolant
Temperature Sensor and Intake Air
Temperature Sensor
...........................21
EXHAUST GAS RECIRCULATION (EGR)
SYSTEM..........................................22
Component Location...........................22
EGR Solenoid <California>..................28
EGR System Inspection <California>
......25
EGR System Inspection <Federal>........25
EGR Temperature Sensor <California> ...28
EGR Valve
......................................27
EGR Valve Control Vacuum..................26
Thermal Vacuum Valve <Federal> ........27
MIXTURE CONTROL (MFI) SYSTEM. . . . . . . . 29
POSITIVE CRANKCASE VENTILATION
SYSTEM..........................................13
Component Location..........................13
Crankcase Ventilation System Inspection
...14
Positive Crankcase Ventilation (PCV)
Valve Inspection
...............................14
SPECIFICATIONS..................................2
General Specifications...........................2
Sealant............................................2
Service Specifications...........................2
Torque Specifications...........................2
TROUBLESHOOTING.............................3
VACUUM HOSES.................................4
Vacuum Circuit Diagram........................9
Vacuum Hoses Routing.........................4

EMISSION CONTROL SYSTEMS -Evaporative Emission Control System17-17
‘URGE CONTROL SYSTEM INSPECTION <Non-Turbo>
I
Throttle body
M17lBBF
Engine
control
module
Intake air temperature
<SOHC (1999models)>
<DOHC
(1999
models)>
6EM153
(1) Disconnect the vacuum hose (red stripes) from the throttle
body and connect it to a hand vacuum pump.
(2) Plug the nipple from which the vacuum hose was removed.
(3) Under the engine conditions described below, provide a
vacuum by using the hand vacuum pump, and then check.
When engine is cold-coolant temperature:
60°C (140°F) or less
~1
When engine is hot-coolant temperature:
70°C (158°F) or hiaher, -- ---~“----
Engine operatingApplying vacuumResultcondition
Idling375 mmHg(14 in.Hg.)Vacuum is maintained
Within 3 minutes Try applyingafter engine startvacuum3,000 rpm
Vacuum leaks
After 3 minutes 375 mmHghave passed after (14 in.Hg.)engine start
3,000 rpm
Vacuum will be main-tained momentarily,after which it willleaks.
NOTE:
The vacuum will leakcontinuously if thealtitude is 2,200 m(7,200 ft.) or higher,
or the intake air
temperature is
50°C(122°F) or higher.
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