1991 MITSUBISHI MONTERO mileage

CO M PU TE R R ELE A R N P R O CED URES

1991 M it s u bis h i M onte ro
GENERAL INFORMATION
Computer Relearn Procedures
All Models
* PLEASE READ THIS FIRST *
The following general procedures are to be used if
driveability problems are encountered after power loss or battery has
been disconnected. These procedures may provide an aid in eliminating
these problems.
To reduce the possibility of complaints, after any service
which requires battery power to be disconnected, vehicle should be
road tested.
COMPUTER RELEARN PROCEDURES
Vehicles equipped with engine or transmission computers may
require a relearn procedure after vehicle battery is disconnected.
Many vehicle computers memorize and store vehicle operation patterns
for optimum driveability and performance. When vehicle battery is
disconnected, this memory is lost. The computer will use default data
until new data from each key start is stored. As computer memorizes
vehicle operation for each new key start, driveability is restored.
Vehicle computers may memorize vehicles operation patterns for 40 of
more key starts.
Customers often complain of driveability problems during
relearn stage because vehicle acts differently then before being
serviced. Depending on type and make of vehicle and how it is
equipped, the following complaints (driveability problems) may exist:
* Harsh Or Poor Shift Quality
* Rough Or Unstable Idle
* Hesitation Or Stumble
* Rich Or Lean Running
* Poor Fuel Mileage
These symptoms and complaints should disappear after a number
of drive cycles have been memorized. To reduce the possibility of
complaints, after any service which requires battery power to be
disconnected, vehicle should be road tested. If a specific relearn
procedure is not available, the following procedure may be used:
Automatic Transmission
* Set parking brake, start engine in "P" or "N" position.
Warm-up vehicle to normal operating temperature or until
cooling fan cycles.
* Allow vehicle to idle for one minute in "N" position. Select
"D" and allow engine to idle for one minute.
* Accelerate at normal throttle position (20-50%) until vehicle
shifts into top gear.
* Cruise at light to medium throttle.
* Decelerate to a stop, allowing vehicle to downshift, and use
brakes normally.
* Process may be repeated as necessary.
Manual Transmission

If equipped, the EMR light (some models may use a reminder
flag) reminds vehicle operator that an emission system maintenance is
required. This indicator is activated after a predetermined
time/mileage.
When performing a smog check inspection, ensure EMR indicator
is not activated. On models using an EMR light, light should glow when
ignition switch is turned to ON position and should turn off when
engine is running.
If an EMR flag is present or an EMR light stays on with
engine running, fail vehicle and service or replace applicable
emission-related components. To reset an EMR indicator, refer to
appropriate MAINTENANCE REMINDER LIGHTS in the MAINTENANCE section.
MALFUNCTION INDICATOR LIGHT (MIL)
The Malfunction Indicator Light (MIL) is used to alert
vehicle operator that the computerized engine control system has
detected a malfunction (when it stays on all the time with engine
running). On some models, the MIL may also be used to display trouble
codes.
As a bulb and system check, malfunction indicator light will
glow when ignition switch is turned to ON position and engine is not
running. When engine is started, light should go out.

IN TE R FE R EN CE V ER IF IC ATIO N C HEC K F O R O HC E N G IN E
1991 Mitsubishi Montero
Maintenance & Service Information
1983-96 Mitsubishi - Timing Belt Information
Cordia, Diamante, Eclipse, Expo, Expo LRV, Galant, Mirage,
Montero, Pickup, Precis, Sigma, Tredia, Van, 3000GT
TIMING BELT INTERFERENCE VERIFICATION INFORMATION
TIMING BELT INTERFERENCE CAUTION
NOTE: CAMSHAFT DRIVE BELTS OR TIMING BELTS - The condition of
camshaft drive belts should always be checked on vehicles
which have more than 50,000 miles. Although some
manufacturers do not recommend replacement at a specified
mileage, others require it at 60,000-100,000 miles. A
camshaft drive belt failure may cause extensive damage to
internal engine components on most engines, although some
designs do not allow piston-to-valve contact. These designs
are often called "Free Wheeling". Many manufacturers changed
their maintenance and warranty schedules in the mid-1980's to
reflect timing belt inspection and/or replacement at
50,000-60,000 miles. Most service interval schedules shown in
this section reflect these changes. Belts or components
should be inspected and replaced if any of the following
conditions exist:
* Crack Or Tears In Belt Surface
* Missing, Damaged, Cracked Or Rounded Teeth
* Oil Contamination
* Damaged Or Faulty Tensioners
* Incorrect Tension Adjustment
TIMING BELT INTERFERENCE CHECK MENU
TIMING BELT INTERFERENCE VERIFICATION TABLE ( 1)








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Replacement Interval
Application Engine (Miles)
Passenger Cars
Cordia
1983-88 .......... 1.8L 4-Cyl. ............ ( 4) 60,000
2.0L 4-Cyl. ............ ( 4) 60,000
Diamante
1992-96 ...... ( 2) 3.0L V6 (DOHC) ............. 60,000
3.0L V6 (SOHC) ........... ( 4) 60,000
Eclipse
1990-94 .......... 1.8L 4-Cyl. ............ ( 4) 60,000
1990-95 ....... ( 2) 2.0L 4-Cyl. ........... ( 4) 60,000
1990-94 ... ( 2) 2.0L 4-Cyl. Non-Turbo ..... ( 4) 60,000
1990-96 ..... ( 2) 2.0L 4-Cyl. Turbo ....... ( 4) 60,000
1996 ........... ( 2) 2.4L 4-Cyl. .......... ( 4) 60,000
Expo
1992-95 .......... 1.8L 4-Cyl. ................ 60,000
( 2) 2.4L 4-Cyl. .......... ( 4) 60,000
Expo LRV
1995 ............. 1.8L 4-Cyl. ................ 60,000
( 2) 2.4L 4-Cyl. .......... ( 4) 60,000
Galant

4 * High
5 * Premium
7 - Body Type
1 * 5-Door Wagon
2 * 2-Door Canvas Top
3 * 2-Door Metal Top (1983-86)
3 * 3-Door Metal Top Or Van (1987 & Newer Models)
8 - Engine Type
E * 2.6L 4-Cylinder
H * 3.0L V6
M * 3.5L V6
S * 3.0L V6
7 * 2.6L 4-Cylinder (1983)
9 - VIN Check Digit
* 1 Through 9 Or X
10 - Vehicle Model Year
D * 1983
E * 1984
F * 1985
G * 1986
H * 1987
J * 1988
K * 1989
L * 1990
M * 1991
N * 1992
P * 1993
R * 1994
S * 1995
T * 1996
11 - Assembly Plant
Y * Ohye, Japan (1983)
Y * Nagoya, Japan (1984)
J * Nagoya, Japan (1985-96)
12 - Transmission Code (1983-85)
4 * 5-Speed M/T (1984-85 Federal Vehicles)
5 * 5-Speed M/T (1984-85 California Vehicles)
7 * 5-Speed M/T (1983 Federal Vehicles)
7 * A/T (1984-85 Federal Vehicles)
8 * A/T (1984-85 California Vehicles)
12-17 - Serial Number (1986-96)
* Sequential Production Number
13-17 - Serial Number (1983-85)
* Sequential Production Number
MAINTENANCE SERVICE INFORMATION
SEVERE & NORMAL SERVICE DEFINITIONS
NOTE: Use the Severe Service schedule if the vehicle to be serviced
is operated under ANY (one or more) of these conditions:
Service is recommended at mileage intervals based on vehicle
operation. Service schedules are based on the following primary

operating conditions.
Normal Service
* Driven More Than 10 Miles Daily
* No Operating Conditions From Severe Service Schedule
Severe Service (Unique Driving Conditions)
* Short Trips In Freezing Temperatures
* Towing Or Commercial Use
* Driving Off-Road Or In Salty Or Sandy Areas
* Severe Dust Conditions
* Hot Weather, Stop-And-Go Driving
* Extensive Idling
CAMSHAFT TIMING BELT
CAUTION: Failure to replace a faulty camshaft timing belt may result
in serious engine damage.
The condition of camshaft drive belts should always be
checked on vehicles which have more than 50,000 miles. Although some
manufacturers do not recommend belt replacement at a specified
mileage, others require it at 60,000-100,000 miles. A camshaft drive
belt failure may cause extensive damage to internal engine components
on most engines, although some designs do not allow piston-to-valve
contact. These designs are often called "Free Wheeling".
Many manufacturers changed their maintenance and warranty
schedules in the mid-1980's to reflect timing belt inspection and/or
replacement at 50,000-60,000 miles. Most service interval schedules in
this manual reflect these changes.
Belts or components should be inspected and replaced if any
of the following conditions exist:
* Cracks Or Tears In Belt Surface
* Missing, Damaged, Cracked Or Rounded Teeth
* Oil Contamination
* Damaged Or Faulty Tensioners
* Incorrect Tension Adjustment
Replace camshaft timing belt at 60,000 mile intervals.
SERVICE POINT LOCATIONS
Fig. 1: Service Point Locations (1983-86 2.6L 4-Cylinder Engine)
Courtesy of Mitsubishi Motor Sales of America.

WARNING: Keep hands away from radiator fan. Fan is controlled by a
thermostatic switch which may come on or run for up to
15 minutes even after engine is turned off.
WARRANTY INFORMATION
CAUTION: Always refer to customer's copy of warranty information for
specific model application and/or coverage limitations.
NEW VEHICLE LIMITED WARRANTY
Covers all manufacturer-installed parts and components for
any repairs, replacements or adjustments needed to correct defects in
materials or workmanship under normal use and maintenance for 36
months or 36,000 miles, whichever comes first, from date of delivery
to the first retail buyer or first date of use.
POWERTRAIN LIMITED WARRANTY
Upon expiration of New Vehicle Limited Warranty, this
warranty covers powertrain against defects in materials or workmanship
up to a maximum of 36 months or 50,000 miles, whichever occurs first.
On 1991-96 models, warranty period is extended to 5 years or 60,000
miles, whichever occurs first. See copy of warranty for specific
components covered.
BATTERY WARRANTY
Covers replacement of original battery for 12 months or 12,
000 miles, whichever occurs first.
AIR CONDITIONER WARRANTY
Covers manufacturer's air conditioners for 36 months or 36,
000 miles, whichever occurs first. Air conditioner refrigerant charge
is covered for the first 12 months or 12,000 miles, whichever occurs
first. On 1992-96 models, refrigerant is covered only as part of a
warranty repair.
ANTI-CORROSION PERFORATION LIMITED WARRANTY
Covers any body sheet metal panel found to have developed
perforation (rust-through) due to corrosion for 5 years regardless of
mileage. Outer panel coverage extends to 7 years or 100,000 miles,
whichever occurs first, on 1992-96 models.
EMISSION SYSTEM DEFECT WARRANTY (EXCEPT CALIFORNIA)
Warrants that the vehicle was designed, built and equipped to
conform at the time of sale with all applicable U.S. emission
standards. Covers any repairs needed to correct defects in materials
or workmanship which would cause the vehicle not to meet these
standards for 5 years or 50,000 miles, whichever occurs first.
EMISSION SYSTEM PERFORMANCE WARRANTY (EXCEPT CALIFORNIA)
Covers all repairs, adjustments, or replacements if vehicle
has been maintained in accordance with the prescribed scheduled
maintenance instructions and fails to conform to applicable emission
standards and such failure results or will result in the vehicle owner
having to bear any penalty or other sanctions under local, state or

MAIN TE N AN CE R EM IN DER L IG HT R ESET P R O CED URES
1991 M it s u bis h i M onte ro
1983-96 MAINTENANCE
Chrysler Motors/Mitsubishi Maintenance Reminder Lights
Dodge; Challenger, Colt, Colt Vista, Conquest, Raider,
Ram-50
Eagle; Summit, Summit Wagon
Plymouth; Colt, Colt Vista, Sapporo
Mitsubishi; 3000GT, Cordia, Diamante, Eclipse,
Expo/Expo LRV, Galant, Mirage, Montero, Pickup, Precis,
Sigma, Starion, Tredia, Van/Wagon
EGR/MAINTENANCE REQUIRED WARNING LIGHT
1) On some models, an EGR or MAINTENANCE REQUIRED warning
light in dash will come on as a reminder to have EGR system serviced
(each 50,000 miles), oxygen sensor replaced (each 80,000 miles) or
evaporative carbon canister replaced (100,000 miles).
2) After servicing or replacing components, reset mileage
counter. On all models except 1987-95 Pickup and 1987-93 Ram-50, reset
switch is located on back of instrument cluster.
3) On 1987-95 Pickup and 1987-93 Ram-50, reset switch is on
lower right corner of instrument cluster, behind instrument cluster
face trim. Slide switch to other side to reset indicator light.
4) Remove warning light bulb after 150,000 mile servicing on
Colt Vista and Wagon. Remove bulb after 120,000 mile servicing on Ram-
50.
Fig. 1: Locating Warning Light Reset Switch (Colt Vista; Colt
Wagon is Similar)
Courtesy of Chrysler Motors.

CAMSHAFT TIMING BELT REPLACEMENT INFORMATION
CAUTION: Failure to replace a faulty camshaft timing belt may result
in serious engine damage.
The condition of camshaft drive belts should always be
checked on vehicles which have more than 50,000 miles. Although some
manufacturers do not recommend belt replacement at a specified
mileage, others require it at 60,000-100,000 miles. A camshaft drive
belt failure may cause extensive damage to internal engine components
on most engines, although some designs do not allow piston-to-valve
contact. These designs are often called "Free Wheeling".
Many manufacturers changed their maintenance and warranty
schedules in the mid-1980's to reflect timing belt inspection and/or
replacement at 50,000-60,000 miles. Most service interval schedules in
this manual reflect these changes.
Belts or components should be inspected and replaced if any
of the following conditions exist:
* Cracks Or Tears In Belt Surface
* Missing, Damaged, Cracked Or Rounded Teeth
* Oil Contamination
* Damaged Or Faulty Tensioners
* Incorrect Tension Adjustment
Replace camshaft timing belt at 60,000 mile intervals.
SEVERE & NORMAL SERVICE DEFINITIONS
NOTE: Use the Severe Service schedule if the vehicle to be serviced
is operated under ANY (one or more) of these conditions:
Service is recommended at mileage intervals based on vehicle
operation. Service schedules are based on the following primary
operating conditions.
Normal Service
* Driven More Than 10 Miles Daily
* No Operating Conditions From Severe Service Schedule
Severe Service (Unique Driving Conditions)
* Short Trips In Freezing Temperatures
* Towing Or Commercial Use
* Driving Off-Road Or In Salty Or Sandy Areas
* Severe Dust Conditions
* Hot Weather, Stop-And-Go Driving
* Extensive Idling
SEVERE SERVICE REQUIREMENTS (PERFORM W/SERVICE SCHEDULES)
NOTE: The following services are to be performed on vehicles
subjected to severe service. See SEVERE & NORMAL SERVICE
DEFINITIONS. This service is to be performed in addition
to the normal services listed in the NORMAL MAINTENANCE
SERVICE SCHEDULES.
SEVERE SERVICE CONDITIONS/ACTIONS TABLE








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Condition  Action  Item  Perform Every (1)