1991 MITSUBISHI MONTERO Service Manual

THROTTLE POSITION SENSOR (TPS) RESISTANCE TABLE








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Application ( 1) Terminal (Ground-Output) Ohms
Colt Vista
Closed ...................... 2-1 .......... 3500-6500
Open ...................... ( 2) 2-3 ........ 3500-6500
Eclipse 2.0L (VIN R&U)
Closed ...................... 2-3 .......... 3500-6500
Open ...................... ( 2) 3-4 ........ 3500-6500
Pickup & Ram-50 3.0L
Closed ...................... 1-4 .......... 3500-6500
Open ...................... ( 2) 2-3 ........ 3500-6500
Stealth & 3000GT
Closed ...................... 4-1 .......... 3500-6500
Open ...................... ( 2) 4-2 ........ 3500-6500
All Others
Closed ...................... 1-4 .......... 3500-6500
Open ...................... ( 2) 2-4 ........ 3500-6500
( 1) - Measure across TPS terminals with connector disconnected.
( 2) - Resistance should increase smoothly.









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VEHICLE SPEED SENSOR CONTINUITY TEST TABLE ( 1)








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Application ( 2) Continuity
All Models ............ 4 Changes Per Revolution
( 1) - Measure continuity at back of speedometer.
See L - WIRING DIAGRAMS article in the
ENGINE PERFORMANCE Section.
( 2) - With ECU connector disconnected. Turn speedometer
cable to cycle reed switch on and off.









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VEHICLE SPEED SENSOR VOLTAGE TEST TABLE ( 1)








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Application ( 2) Volts
All Models
Ignition switch OFF ................ 1 Or Less
Ignition switch ON ................... 4.5-4.9
( 1) - Measure voltage at back of speedometer. See
L - WIRING DIAGRAMS article in the ENGINE
PERFORMANCE Section.
( 2) - With ECU connector disconnected. Turn speedometer
cable to cycle reed switch on and off.









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SER VIC E IN DIC ATO R & W AR NIN G L IG HTS
1991 M it s u bis h i M onte ro
1983-92 MAINTENANCE
Mitsubishi Service Indicator & Warning Lights
Montero
SERVICE INDICATOR & WARNING LIGHTS
Fig. 1: 1983-88 Dash Gauges & Warning Lights
Courtesy of Mitsubishi Motor Sales of America, Inc.

Fig. 2: 1989-92 Dash Gauges & Warning Lights
Courtesy of Mitsubishi Motor Sales of America, Inc.
OIL PRESSURE WARNING LIGHT

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

ignition switch is turned on again until vehicle begins to move, even
if free-wheeling hubs are in locked condition. Light comes on or goes
out by detecting vehicle speed (approximately 3 mph). When vehicle
speed is less than 3 mph, the condition of the automatic free-wheeling
hubs may not agree with the indicator until vehicle speed is
increased. If vehicle has been parked in extremely cold weather in 4WD
mode, the light may remain lit, even after switching to 2WD,
indicating that hubs are still locked.

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C - S PEC IF IC ATIO NS

1991 M it s u bis h i M onte ro
1991 ENGINE PERFORMANCE
Service & Adjustment Specifications
Chrysler Motors: Colt, Colt 200, Colt Vista,
Ram-50, Stealth, Summit
Mitsubishi: Eclipse, Galant, Mirage, Montero,
Pickup, 3000GT
INTRODUCTION
Use this article to quickly find specifications related to
servicing and on-vehicle adjustments. This is a quick reference
article for when you are familiar with an adjustment procedure and
only need a specification.
CAPACITIES
BATTERY SPECIFICATIONS








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Application Amp. Hr. Rating
Colt, Mirage & Summit
Type 1 ............................... 48
Type 2 ............................... 36
Colt Vista ............................. 36
Colt 200 ............................... 52
Eclipse ................................ 50
Galant ................................. 40
Montero ................................ 52
Pickup
2.4L ................................. 36
3.0L ................................. 52
Ram-50
2.4L ................................. 36
3.0L
Standard ........................... 52
Optional ........................... 55
Stealth & 3000GT ....................... 52









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FLUID CAPACITIES








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Application Quantity
Automatic Transaxle (Dexron-II)
Colt, Colt 200, Colt Vista, Galant & Mirage ...... 6.4 Qts. (6.1L)\
Galant (AWD) ..................................... 6.8 Qts. (6.5L\
)
Eclipse
Except Turbo ................................... 6.4 Qts. (6.1L)\
Turbo .......................................... 7.4 Qts. (7.0L)\
Stealth & 3000GT ................................. 7.9 Qts. (7.5L)\
Summit ........................................... 6.1 Qts. (5.8L)\
Automatic Transmission (Dexron-II)
Montero .......................................... 7.6 Qts. (7.2L)\
Pickup & Ram-50 .................................. 7.4 Qts. (7.0L)\
Cooling System (Includes Heater & Reserve Tank)
Colt, Colt 200, Mirage & Summit .................. 5.3 Qts. (5.0L)\
Colt Vista ....................................... 7.4 Qts. (7.0L)\
Eclipse

1.8L ............................................ 6.6 Qts. (6.2L)\
2.0L ............................................ 7.6 Qts. (7.2L)\
Galant ........................................... 7.6 Qts. (7.2L)\
Montero ......................................... 10.0 Qts. (9.5L)\
Pickup (2WD)
Automatic Transmission ......................... 6.4 Qts. (6.1L)\
Manual Transmission ............................ 6.3 Qts. (6.0L)\
Pickup (4WD) ..................................... 8.9 Qts. (8.4L\
)
Ram-50 (2WD)
Automatic Transmission ......................... 6.5 Qts. (6.1L)\
Manual Transmission ............................ 6.3 Qts. (6.0L)\
Ram-50 (4WD)
2.4L
Automatic Transmission ....................... 6.5 Qts. (6.1L)\
Manual Transmission .......................... 6.6 Qts. (6.2L)\
3.0L
Automatic Transmission ....................... 8.8 Qts. (8.3L)\
Manual Transmission .......................... 8.9 Qts. (8.4L)\
Stealth & 3000GT ................................. 8.8 Qts. (8.3L)\
Crankcase (Includes Filter)
Colt, Colt 200, Mirage & Summit .................. 4.2 Qts. (4.0L)\
Colt Vista ....................................... 4.0 Qts. (3.8L)\
Eclipse ...................................... (1) 4.5 Qts. (4.3L)
Galant
2.0L (SOHC) .................................... 4.0 Qts. (3.8L\
)
2.0L (DOHC) ................................ ( 1) 4.5 Qts. (4.3L)
Montero .......................................... 5.5 Qts. (5.3L)\
Pickup ........................................... 4.5 Qts. (4.3L)\
Ram-50 ........................................... 5.5 Qts. (5.3L)\
Stealth & 3000GT ............................. ( 1) 4.5 Qts. (4.3L)
Differential (SAE 80W-90/API GL-5)
Colt Vista (4WD), Eclipse ........................ 1.5 Pts. (.7L\
)
Galant, Stealth & 3000GT .......................... 1.5 Pts. (.7L)\
Montero
Front .......................................... 1.2 Qts. (1.1L)\
Rear ........................................... 2.7 Qts. (2.6L)\
Pickup & Ram-50
Front
2.4L ......................................... 1.6 Qts. (1.5L)\
3.0L ......................................... 2.7 Qts. (2.6L)\
Rear
2WD .......................................... 1.6 Qts. (1.5L)\
4WD
2.4L ....................................... 1.6 Qts. (1.5L)\
3.0L ....................................... 2.7 Qts. (2.6L)\
Manual Transaxle (SAE 75W-85/API GL-4)
Colt, Colt 200, Mirage & Summit
4-Speed ........................................ 3.6 Pts. (1.7L)\
5-Speed ........................................ 3.8 Pts. (1.8L)\
Colt Vista
2WD ............................................ 2.6 Qts. (2.5L)\
4WD ............................................ 2.2 Qts. (2.1L)\
Eclipse (FWD)
Except Turbo ................................... 1.9 Qts. (1.8L)\
Turbo .......................................... 2.3 Qts. (2.2L)\
Eclipse & Galant (AWD) ........................... 2.4 Qts. (2.3L\
)
Galant ........................................... 1.9 Qts. (1.8L)\
Stealth & 3000GT ................................. 2.4 Qts. (2.3L)\
Manual Transmission (SAE 75W-85/API GL-4)
Montero .......................................... 2.3 Qts. (2.2L)\
Pickup & Ram-50
2WD ............................................ 2.4 Qts. (2.3L)\
4WD ............................................ 2.3 Qts. (2.2L)\

Power Steering (Dexron-II)
Colt, Colt Vista, Colt 200, Mirage & Summit ...... 1.9 Qts. (.9L)\
Eclipse & Galant .................................. 1.9 Qts. (.9L)\
Montero .......................................... 2.2 Pts. (1.0L)\
Pickup & Ram-50 ................................... 1.9 Qts. (.9L)\
Stealth & 3000GT
2-Wheel Steering ................................ 1.9 Pts. (.9L)\
4-Wheel Steering ............................... 2.5 Pts. (1.2L)\
Transfer Case (SAE 75W-85/API GL-4)
Colt Vista ........................................ 1.5 Pts. (.7L)\
Eclipse & Galant .................................. 1.3 Pts. (.6L)\
Montero, Pickup & Ram-50 ......................... 4.7 Pts. (2.2L)\
Stealth ............................................. .3 Pt. (.2L)\
3000GT .............................................. .6 Pt. (.3L)\
(1) - Add 1.0 Pt. (.5L) with oil cooler.









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QUICK-SERVICE
SERVICE INTERVALS & SPECIFICATIONS
REPLACEMENT INTERVALS








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Component Miles
Colt, Colt 200, Mirage & Summit
Air Filter ....................... 30,000
Automatic Transaxle Fluid ........ 30,000
Belts ............................ 30,000
Coolant .......................... 30,000
Fuel & Vapor Hoses ............... 50,000
Oil ................................ 7500
Oil Filter ....................... 15,000
Spark Plugs ...................... 30,000
Timing Belt ...................... 60,000
Colt Vista
Air Filter ....................... 30,000
Automatic Transaxle Fluid ........ 30,000
Belts ............................ 30,000
Coolant .......................... 30,000
EGR Valve ( 1) .................... 50,000
Fuel & Vapor Hoses ............... 50,000
Oil ................................ 7500
Oil Filter ....................... 15,000
O2 Sensor ( 1) .................... 80,000
Rear Axle Fluid .................. 30,000
Spark Plugs ...................... 30,000
Spark Plug Wires ( 1) ............. 60,000
Timing Belt ...................... 60,000
Vapor Canister ( 1) .............. 100,000
Mirage
Air Filter ....................... 30,000
Automatic Transaxle Fluid ........ 30,000
Belts ............................ 30,000
Coolant .......................... 30,000
Fuel & Vapor Hoses ............... 50,000
Oil ................................ 7500
Filter ........................... 15,000
Spark Plugs ...................... 30,000
Timing Belt ...................... 60,000
Eclipse