1991 MITSUBISHI MONTERO engine oil

jump start remote control brake fluid check transmission fluid brake pads replacement height

Page 725 of 1333

$MITSUBISHI MONTERO 1991 Service Manual 1987-91 ...................................... 2.3 Qts. (2.2L) 1992-95 ...................................... 2.4 Qts. (2.3L) \ \$

1987-91 ...................................... 2.3 Qts. (2.2L)

1992-95 ...................................... 2.4 Qts. (2.3L)

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Service Labor Times

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Application Hours

30,000 (60,000) 50,000

Application Mile Service Mile Service

2.6L 4-Cylinder

Automatic Transmission .... 7.9 (8.9) ................. 2.6

Manual Transmission ....... 6.9 (7.9) ................. 2.6

3.0L V6

Automatic Transmission .... 6.1 (10.6) ................ 2.6

Manual Transmission ....... 5.1 (9.6) ................. 2.6

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LUBRICATION SPECIFICATIONS TABLE\
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Application Fluid Specifications
Brake & Clutch Fluid ........................... DOT 3 Or DOT 4
Engine Coolant ............. Ethylene-Glycol Antifreeze Coolant
Engine Oil (
1)
Minimum Temperature
Greater Than 32
F (0
C) ..... SAE 20W-40 Or 20W-50 API SG/CD
Greater Than -10
F (-23
C) .. SAE 10W-30 Or 10W-40 API SG/CD
Maximum Temperature
Less Than 60
F (16
C) ......... SAE 5W-30 Or 5W-40 API SG/CD
Front Axle & Conventional Rear Axle
Minimum Temperature
Greater Than -10
F (-23
C) ..... SAE 85W-90, 80W-90 API GL-5
Maximum Temperature
Less Than -30
F (-34
C) ................... SAE 75W API GL-5
Power Steering Fluid ........................... Dexron-IIE ATF
Rear Axle (With Limited
Slip Differential) ........... Hypoid Gear Oil (8149630EX) Or
Equivalent
Transmission
Automatic .................................... Dexron-IIE ATF
Manual Transaxle &
Transfer Case (4WD) ........... SAE 75W-85W, 75W-90 API GL-5
( 1) - Since temperature ranges for different oil grades overlap,
brief fluctuations in outside temperatures are no cause for
concern.
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FLUID CAPACITIES
FLUID CAPACITIES TABLE\
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Application Quantity
A/C System R-12 Refrigerant
1983-87 .......................................... 24-26 Ozs.
1988-91 ............................................. 32 Ozs.
1992-93 ............................................. 28 Ozs.
A/C System R-134a Refrigerant ( 1)
1994-95 .......................................... 21-23 Ozs.
Automatic Transmission

Page 726 of 1333

MITSUBISHI MONTERO 1991 Service Manual 1984-86 ................................. (2) 7.2 Qts. (6.8L)
1987-93 ..................................... 7.6 Qts. (7.2L)
1994 (3.0L SOHC) ............................ 7.6 Qts. (7.2L)

1984-86 ................................. (2) 7.2 Qts. (6.8L)
1987-93 ..................................... 7.6 Qts. (7.2L)
1994 (3.0L SOHC) ............................ 7.6 Qts. (7.2L)
1994 (3.0L DOHC & 3.5L) ..................... 9.0 Qts. (8.5L)
1995 ........................................ 7.9 Qts. (7.5L)
Cooling System
1983-88 ..................................... 8.5 Qts. (8.0L)
1989-95
2.6L ....................................... 9.7 Qts. (9.2L)
3.0L ...................................... 10.0 Qts. (9.5L)
1994
95
3.5L ...................................... 10.0 Qts. (9.5L)
Differential
1983-88 ..................................... 1.9 Qts. (1.8L)
1989-93
2.6L ....................................... 1.9 Qts. (1.8L)
3.0L ....................................... 2.7 Qts. (2.6L)
1994
3.0L & 3.5L ................................ 2.7 Qts. (2.6L)
1995
3.0L ....................................... 2.7 Qts. (2.6L)
3.5L ....................................... 3.3 Qts. (3.2L)
Engine Oil
1983-86 ..................................... 6.0 Qts. (5.8L)
1987 ........................................ 5.2 Qts. (5.0L)
1988 ........................................ 5.0 Qts. (4.8L)
1989-91 ..................................... 5.5 Qts. (5.3L)
1992-95 ..................................... 5.2 Qts. (4.9L)
Power Steering ................................ 1.1 Qts. (1.0L)
Fuel Tank
1983-88 .................................... 15.9 Gals. (60L)
1989-90
2.6L 2-Door ............................... 15.9 Gals. (60L)
3.0L 2-Door ............................... 19.9 Gals. (75L)
2.6L & 3.0L 4-Door .......................... 24 Gals. (92L)
1991-95 ...................................... 24 Gals. (92L)
Manual Transmission
1983-91 ..................................... 2.3 Qts. (2.2L)
1992 ........................................ 2.4 Qts. (2.3L)
1993-95 ..................................... 2.6 Qts. (2.5L)
Transfer Case
1983-91 ..................................... 2.3 Qts. (2.2L)
1992-95 ..................................... 2.4 Qts. (2.3L)
( 1) - Use of R12 in a R134a system will result in SEVERE DAMAGE.
( 2) - 1983 model equipped with manual transmission only.
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Page 732 of 1333

MITSUBISHI MONTERO 1991 Service Manual Light comes on with the ignition switch in the "ON" position
as a bulb check, but should go out shortly after engine is started. If
light remains on or comes on while driving, it indicates lo

Light comes on with the ignition switch in the "ON" position
as a bulb check, but should go out shortly after engine is started. If
light remains on or comes on while driving, it indicates low oil
pressure and possible system malfunction. Have the system checked and
serviced immediately. Do not operate vehicle until cause is located
and corrected.
ALTERNATOR WARNING LIGHT
Light comes on with the ignition switch in the "ON" position
as a bulb check and goes out after engine is started. If light remains
on or comes on while driving, it indicates possible fault in the
electrical charging system. The alternator belt may be loose or
broken. Have the system checked and serviced promptly. Do not drive
vehicle if alternator belt is loose or broken.
"BRAKE" WARNING LIGHT
Light comes on with the ignition switch in the "ON" position
as a bulb check and goes out after engine is started. Light will also
come on with the parking brake fully or partially engaged. If light
remains on or comes on at any other time, it indicates low brake fluid
level in the master cylinder reservoir or the parking brake switch may
be damaged. Have the system checked and serviced immediately if brake
fluid level is low. Do not continue driving if further trouble is
experienced.
"CHECK ENGINE" WARNING LIGHT (IF EQUIPPED)
Light is designed to come on briefly with the ignition switch
in the "ON" position as a bulb check. If light remains on or comes on
while driving, it indicates fault in an exhaust gas related component
and the system is not functioning properly. Have the system checked
and serviced as soon as possible.
"MAINTENANCE REQUIRED" WARNING LIGHT (IF EQUIPPED)
Light comes on at 50,000 miles, 80,000 miles, 100,000 miles
and 120,000 miles (150,000 miles on 1990-91 models) as a service
reminder that it is time for the periodic maintenance of the emission
control system. Have the system inspected and serviced as necessary
when light comes on. Continued operation of vehicle without having
system serviced after warning light comes on may adversely affect
proper performance of the emission control system. Reset warning
light, after the system has been checked, by pushing the reset switch
in front of the combination meter. Remove the warning light bulb after
the last maintenance service at 120,000 miles (150,000 miles on 1990-
91 models).
"A/T TEMPERATURE" WARNING LIGHT (IF EQUIPPED)
Light comes on when the automatic transmission fluid
temperature becomes abnormally high. If light comes on, reduce engine
speed, stop car and put it in "P" (Park) position. Leave engine
running until light goes out. Normal vehicle operation may be resumed
after light has gone out. If light does not go out, have the system
checked and serviced as necessary.
WHEEL LOCK INDICATOR LIGHT (IF EQUIPPED)
Light comes on when automatic free-wheeling hubs are locked.
If ignition is turned off, indicator light will not come on when

Page 741 of 1333

MITSUBISHI MONTERO 1991 Service Manual No. 3 Wire ....................... 12,000
No. 4 Wire ....................... 14,000
3.0L (VIN B & C)
Coil Wire ...................... Not Used
No. 1 Wire ......................... 8600

No. 3 Wire ....................... 12,000
No. 4 Wire ....................... 14,000
3.0L (VIN B & C)
Coil Wire ...................... Not Used
No. 1 Wire ......................... 8600
No. 2 Wire ....................... 13,900
No. 3 Wire ......................... 6400
No. 4 Wire ....................... 11,500
No. 5 Wire ......................... 4500
3.0L (VIN S)
Coil Wire .......................... 3000
No. 1 Wire ......................... 9000
No. 2 Wire ......................... 8500
No. 3 Wire ....................... 10,000
No. 4 Wire ......................... 9000
No. 5 Wire ....................... 12,000
No. 6 Wire ....................... 10,000
No. 6 Wire ....................... 11,700
(1) - See A - ENGINE/VIN ID article in the
ENGINE PERFORMANCE Section for VIN
information.
( 2) - Information not available from mfg.
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SPARK PLUGS
SPARK PLUG TYPE\
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Application Nippondenso No.
1.5L (VIN A) .................... W20EPR-11
1.6L (VIN Y) .................... W20EPR-11
1.8L (VIN T) .................... W20EPR-11
2.0L (VIN R) ....................... W20EPR
2.0L (VIN U & V) ................ W20EPR-11
2.4L (VIN W) .................... W20EPR-11
3.0L (VIN B & C) ............... PK20PR-P11
3.0L (VIN S) .................... W16EPR-11
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SPARK PLUG SPECIFICATIONS\
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Gap Torque
Application In. (mm) Ft. Lbs. (N.m\
)
2.0L (VIN R & U) ....... .028-.031 (.7-.8) ......... 15-21 (20-\
30)
All Others ............ .039-.043 (1.0-1.1) ........ 15-21 (20-30\
)
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FIRING ORDER & TIMING MARKS
WARNING: On the 3.0L V6, the firing order and the spark plug
connection order on the top of the distributor do not match.
Circuits internal to the distributor cap differ from the
external spark plug wire connections. This is intentional and
is done to avoid spark plug wires crossover. See Fig. 3.

Page 846 of 1333

MITSUBISHI MONTERO 1991 Service Manual Circuit Circuit
Application Terminals Terminals
Montero, Pickup 3.0L & Ram-50 3.0L ..... 2 & 4 ........

Page 871 of 1333

MITSUBISHI MONTERO 1991 Service Manual remains on (light may flash) during vehicle operation, cause of
malfunction must be determined by using DIAGNOSTIC FAULT CHARTS (if
testing with voltmeter) or diagnostic CODE CHARTS (if testing with
D

remains on (light may flash) during vehicle operation, cause of
malfunction must be determined by using DIAGNOSTIC FAULT CHARTS (if
testing with voltmeter) or diagnostic CODE CHARTS (if testing with
DRB-II). If a sensor fails, ECU will use a substitute value in its
calculations to continue engine operation. In this condition, vehicle
is functional, but loss of good driveability may result.
INTERMITTENT FAILURES
Intermittent failures may cause CHECK ENGINE light to flicker
or illuminate and go out after the intermittent fault goes away.
However, the corresponding trouble code will be retained in ECU
memory. If related fault does not reoccur within a certain time frame,
related trouble code will be erased from ECU memory. Intermittent
failures may be caused by a sensor, connector or wiring related
problems. See INTERMITTENTS in H - TESTS W/O CODES article.
PRETEST INSPECTION
Before proceeding with diagnosis, the following precautions
must be followed:
* Vehicle must have a fully charged battery and functional
charging system.
* Visually inspect connectors and circuit wiring being worked
on.
* DO NOT disconnect battery or ECU. This will erase any fault
codes stored in ECU.
* DO NOT cause short circuits when performing electrical tests.
This will set additional fault codes, making diagnosis of original
problem more difficult.
* DO NOT use a test light in place of a voltmeter.
* When checking for spark, ensure coil wire is NO more than
1/4" from ground. If coil wire is more than 1/4" from ground,
damage to vehicle electronics and/or ECU may result.
* DO NOT prolong testing of fuel injectors. Engine may
hydrostatically (liquid) lock.
* When a vehicle has multiple fault codes, always repair lowest
number fault code first.
* If DRB-II is being used to diagnose system, always perform
verification test after repairs are made.
ENTERING ON-BOARD DIAGNOSTICS (USING VOLTMETER)
1) Before entering on-board diagnostics, refer to PRETEST
INSPECTION in this article. Turn ignition switch to OFF position.
Locate self-diagnostic connector. See SELF-DIAGNOSTIC TEST CONNECTOR
LOCATION table. Using an analog voltmeter, connect voltmeter positive
lead to self-diagnostic connector terminal No. 1 and negative lead to
terminal No. 12 (ground). See Fig. 6.
2) Turn ignition switch to ON position and disclosure of ECU
memory will begin. If 2 or more systems are non-functional, they are
indicated by order of increasing code number. Indication is made by
12-volt pulses of voltmeter pointer. A constant repetition of short
12-volt pulses indicates system is normal. If system is abnormal,
voltmeter will pulse between zero and 12 volts.
3) Signals will appear on voltmeter as long and short 12-volt
pulses. Long pulses represent tens; short pulses represent ones. For
example 4 long pulses and 3 short pulses indicates Code 43. See

Page 878 of 1333

MITSUBISHI MONTERO 1991 Service Manual 44 (5) ..... Open or short in either ignition coil circuit
( 1) - Except Montero & Sigma.
( 2) - Will not turn on CHECK ENGINE light.
( 3) - 2.0L turbo only.
( 4) - California only. Except Sigma.
(

Page 1139 of 1333

MITSUBISHI MONTERO 1991 Service Manual * Check airflow sensor.
* Check coolant temperature sensor.
* Check idle position switch.
* Check power supply to ECU ground.
* Check fuel pressure.
* Ch

* Check airflow sensor.
* Check coolant temperature sensor.
* Check idle position switch.
* Check power supply to ECU ground.
* Check fuel pressure.
* Check for disconnected or damaged vacuum hoses.
* Check for control relay malfunction.
* Check for PFI system malfunction.
* Check for fuel pump drive control system malfunction.
* Check for ignition coil malfunction.
* Check for ignition timing malfunction.
* Check for power transistor malfunction.
* Check for fuel injector malfunction.
* Check for ECU malfunction.
* Ensure electrical harness, connectors and wires are not
broken or loose.
ROUGH OR UNSTABLE IDLE
* Check intake air temperature sensor.
* Check purge control solenoid valve (if applicable).
* Check vehicle speed sensor.
* Check engine coolant temperature sensor.
* Check barometric pressure sensor.
* Check ignition switch.
* Check idle position switch.
* Check throttle position sensor.
* Check TDC sensor.
* Check crank angle sensor.
* Check power steering oil pressure switch.
* Check A/C switch and power relay (if applicable).
* Check inhibitor switch.
* Check oxygen sensor.
* Check airflow sensor.
* Check motor position sensor (if equipped).
* Check fuel pressure.
* Check for disconnected or damaged vacuum hoses.
* Check PFI system malfunction.
* Check for stepper motor malfunction (if applicable).
* Check for fuel injector malfunction.
* Check for power transistor malfunction.
* Check for vehicle speed switch malfunction.
* Check for ECU malfunction.
* Ensure electrical harness, connectors and wires are not
broken or loose.
ENGINE HESITATES OR POOR ACCELERATION
* Check intake air temperature sensor.
* Check engine coolant temperature sensor.
* Check barometric pressure sensor.
* Check ignition switch.
* Check ignition coil.
* Check EGR control solenoid valve (if applicable).
* Check idle position switch.
* Check throttle position sensor.
* Check TDC sensor.
* Check crank angle sensor.
* Check power steering oil pressure switch.
* Check A/C switch (if applicable).
* Check inhibitor switch (A/T).
* Check oxygen sensor.
* Check airflow sensor.

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