1991 MITSUBISHI MONTERO lock
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axle backlash. If backlash is one inch or less, drive axle is not the
source of clunk noise.
Bearing Whine
Bearing whine is a high-pitched sound similar to a whistle.
It is usually caused by malfunctioning pinion bearings. Pinion
bearings operate at drive shaft speed. Roller wheel bearings may whine
in a similar manner if they run completely dry of lubricant. Bearing
noise will occur at all driving speeds. This distinguishes it from
gear whine, which usually comes and goes as speed changes.
Bearing Rumble
Bearing rumble sounds like marbles being tumbled. It is
usually caused by a malfunctioning wheel bearing. The lower pitch is
because the wheel bearing turns at only about 1/3 of drive shaft
speed.
Chatter On Turns
This is a condition where the entire front or rear of vehicle
vibrates when vehicle is moving. The vibration is plainly felt as well
as heard. Extra differential thrust washers installed during axle
repair can cause a condition of partial lock-up that creates this
chatter.
Axle Shaft Noise
Axle shaft noise is similar to gear noise and pinion bearing
whine. Axle shaft bearing noise will normally distinguish itself from
gear noise by occurring in all driving modes (Drive, cruise, coast and
float), and will persist with transmission in Neutral while vehicle is
moving at problem speed.
If vehicle displays this noise condition, remove suspect
axle shafts, replace wheel seals and install a new set of bearings.
Re-evaluate vehicle for noise before removing any internal components.
Vibration
Vibration is a high-frequency trembling, shaking or grinding
condition (felt or heard) that may be constant or variable in level
and can occur during the total operating speed range of the vehicle.
The types of vibrations that can be felt in the vehicle can
be divided into 3 main groups:
* Vibrations of various unbalanced rotating parts of the
vehicle.
* Resonance vibrations of the body and frame structures caused
by rotating of unbalanced parts.
* Tip-in moans of resonance vibrations from stressed engine or
exhaust system mounts or driveline flexing modes.
DRIVE AXLE - RWD TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing. For definitions
of listed noises or sounds, see DRIVE AXLE - NOISE DIAGNOSIS
under POWERTRAIN.
DRIVE AXLE (RWD) TROUBLE SHOOTING
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CONDITION POSSIBLE CAUSE CORRECTION
Page 1247 of 1333
Column not correctly See STEERING COLUMNS
aligned article
Broken lower joint Replace joint
Horn contact ring not See STEERING COLUMN
article
Bearing not lubricated See STEERING COLUMN
article
Shaft snap ring not Reseat or replace snap
properly seated ring
Plastic spherical joint See STEERING COLUMN
not lubricated article
Shroud or housing loose Tighten holding screws
Lock plate retaining See STEERING COLUMN
ring not seated article
Loose sight shield Tighten holding screws
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High Steering Column assembly See STEERING COLUMN
Shaft Effort misaligned article
Improperly installed dust Adjust or replace
shield
Tight steering universal See STEERING COLUMN
joint article
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High Shift Column is out of See STEERING COLUMN
Effort alignment article
Improperly installed Adjust or replace
dust shield
Seals or bearings not See STEERING COLUMNS
lubricated article
Mounting bracket screws Replace with new
too long shorter screws
Burrs on shift tube Remove burrs or replace
tube
Lower bowl bearing See STEERING COLUMN
assembled wrong article
Shift tube bent or broken Replace as necessary
Improper adjustment of See STEERING COLUMN
shift levers article
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Improper Trans. Sheared shift tube joint Replace as necessary
Shifting
Sheared lower shaft lever Replace as necessary
Improper shift lever See STEERING COLUMN
adjustment article
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![MITSUBISHI MONTERO 1991 Service Manual Improper gate plate See STEERING COLUMN
adjustment article
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\](/manual-img/19/57332/w960_57332-1247.png "MITSUBISHI MONTERO 1991 Service Manual Improper gate plate See STEERING COLUMN
adjustment article
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Improper gate plate See STEERING COLUMN
adjustment article
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Excess Play in Instrument panel bracket Tighten bolts and check
Column bolts loose bracket
Broken weld nut on jacket See STEERING COLUMN
article
Instrument bracket capsule See STEERING COLUMN
sheared article
Column bracket/jacket Tighten bolts and check
bolts loose bracket
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Steering Locks Release lever mechanism See STEERING COLUMN
in Gear article
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SUSPENSION TROUBLE SHOOTING
NOTE: This is GENERAL information. This article is not intended
to be specific to any unique situation or individual vehicle
configuration. The purpose of this Trouble Shooting
information is to provide a list of common causes to
problem symptoms. For model-specific Trouble Shooting,
refer to SUBJECT, DIAGNOSTIC, or TESTING articles available
in the section(s) you are accessing.
BASIC SUSPENSION TROUBLE SHOOTING CHART
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CONDITION POSSIBLE CAUSE CORRECTION \
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Front End Noise Loose or worn wheel See Wheel Bearing
Adjustment in
SUSPENSION
Worn shocks or shock Replace struts or strut
mountings mountings
Worn struts or strut Replace struts or strut
mountings mountings
Loose or worn lower control See SUSPENSION
arm
Loose steering gear-to- See STEERING
frame bolts
Worn control arm bushings See SUSPENSION
Ball joints not lubricated Lubricate ball joints &
see Ball Joint Checking
in SUSPENSION
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Front Wheel Tires or wheels out of Check tire balance
Shake, Shimmy, balance
or Vibration
Incorrect wheel alignment See WHEEL ALIGNMENT
Drive shaft unbalanced Check drive shaft
balance
Page 1299 of 1333
WHEEL A LIG NM EN T S PEC IF IC ATIO NS & P R O CED URES
1991 M it s u bis h i M onte ro
1991 WHEEL ALIGNMENT
Specifications & Procedures
Chrysler Motors: Colt, Colt Vista, Colt 200,
Ram-50, Stealth, Summit
Mitsubishi: Eclipse, Galant, Mirage, Montero,
Pickup, Precis, 3000GT
WHEEL ALIGNMENT PROCEDURES
NOTE: On vehicles with electronic chassis controls, ensure all
systems are functional before attempting to adjust riding
height or wheel alignment.
CAMBER ADJUSTMENT
Montero, Pickup & Ram-50
1) Check tire inflation. Place front wheel on turning radius
gauge, and level vehicle (unladed). On 2WD models, remove hub cap and
cotter pin. On 4WD models, remove free wheeling hub assembly.
2) On all models, measure camber with camber/caster/kingpin
gauge attached. See appropriate WHEEL ALIGNMENT SPECIFICATIONS table.
If camber is not within specification, remove shock absorber mounting
nut and lock nut.
3) Compress shock absorber and loosen upper arm mounting
bolts and nuts. Adjust camber by increasing or decreasing shims
between upper arm shaft and crossmember. See Fig. 1.
CAUTION: Difference in shim thickness between front and rear must be
.16" (4 mm) or less. DO NOT use more than 3 shims at one
location.
Fig. 1: Adjusting Camber & Caster (Pickup & Ram-50 Shown; Montero
Camber Adjustment Similar)
Courtesy of Mitsubishi Motor Sales of America.
Stealth & 3000GT
Page 1300 of 1333
Check camber. If camber is not within specification, loosen
eccentric cam nut. Rotate eccentric cam bolt to obtain correct camber.
See Fig. 2 . Each marking represents a change of 1/8-1/4 degree of
camber.
Fig. 2: Adjusting Camber (Stealth & 3000GT)
Courtesy of Mitsubishi Motor Sales of America.
All Other Models
Check camber using a camber/caster/kingpin gauge and turning
radius gauge. See WHEEL ALIGNMENT SPECIFICATIONS table. If camber is
not within specification, replace damaged or bent parts.
CASTER ADJUSTMENT
Colt Vista
Check tire inflation. Place front wheel on turning radius
gauge, and level vehicle (unladed). Remove hub cap and cotter pin.
Measure caster with camber/caster/kingpin gauge attached. See WHEEL
ALIGNMENT SPECIFICATIONS table. If caster is not within specification,
adjust by changing strut bar lock position. See Fig. 3.
Fig. 3: Adjusting Caster (Colt Vista)
Courtesy of Mitsubishi Motor Sales of America.
Montero
Page 1301 of 1333
Remove free wheeling hub. Measure caster with
camber/caster/kingpin gauge and turning radius gauge. See WHEEL
ALIGNMENT SPECIFICATIONS table. If caster is not within specification,
remove upper arm from crossmember. Adjust caster by turning upper arm
shaft. See Fig. 4.
Fig. 4: Adjusting Caster (Montero)
Courtesy of Mitsubishi Motor Sales of America.
Pickup & Ram-50
1) Check tire inflation. Place front wheel on turning radius
gauge, and level vehicle (unladed). On 2WD models, remove hub cap and
cotter pin. On 4WD models, remove free wheeling hub assembly.
2) On all models, measure caster with camber/caster/kingpin
gauge attached. See WHEEL ALIGNMENT SPECIFICATIONS table. If caster is
not within specification, remove shock absorber mounting nut and lock
nut.
3) Compress shock absorber and loosen upper arm mounting
bolts and nuts. Adjust caster by increasing or decreasing shims
between upper arm shaft and crossmember. See Fig. 1.
CAUTION: Difference in shim thickness between front and rear must be
.16" (4 mm) or less. DO NOT use more than 3 shims at one
location.
All Other Models
Check caster using a camber/caster/kingpin gauge and turning
radius gauge. See WHEEL ALIGNMENT SPECIFICATIONS table. If caster is
not to specification, replace damaged or bent parts.
TOE-IN ADJUSTMENT
Check toe-in. See WHEEL ALIGNMENT SPECIFICATIONS table. If
Page 1325 of 1333
WIR IN G D IA G RAM S
1991 M it s u bis h i M onte ro
1991 Wiring Diagrams
Mitsubishi
Montero
IDENTIFICATION
COMPONENT LOCATION MENU
COMPONENT LOCATIONS TABLE \
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Component Figure No. (Location)
A/C RELAYS .......................... 4 (C 12), 4 (A-B 15)
A/C SYSTEM ................................. 4 (A-C 12-15)
ALTERNATOR ................................... 1 (B-C 1-2)
ALTERNATOR RELAY ............................... 1 (C 1-2)
AUTO FREE-WHEELING HUB CONTROL UNIT ............. 3 (D 11)
BACK DOOR LOCK SW ............................... 7 (B 27)
BACK-UP LT SW (M/T) ............................. 7 (A 26)
BATTERY .......................................... 1 (A 1)
BLOWER SWITCH ................................. 4 (A-B 12)
BUZZER .......................................... 5 (E 17)
CARGO LIGHT ..................................... 6 (A 23)
CIG LIGHTER ..................................... 3 (E 11)
CLOCK ........................................... 3 (E 11)
COLUMN SW ..................................... 5 (A-E 19)
CRUISE CONTROL SYSTEM ...................... 4 (D-E 13-15)
DEFOGGER ...................................... 7 (C-D 27)
DIAG CONNECTION .................................. 2 (E 7)
DIMMER CONTROL SWITCH ............................ 3 (E 8)
DIR FLASHER ..................................... 5 (C 16)
DIR SWITCH ...................................... 5 (C 19)
DOME LT ............................... 6 (A 23), 7 (A 24)
DOOR LOCK SYSTEM ........................... 6 (D-E 21-23)
DOOR SWITCHES ......................... 5 (D 17), 6 (C 23)
FRONT WIPER SYSTEM ........................... 5 (A 16-17)
FUEL GAUGE UNIT ................................. 6 (C 22)
FUEL PUMP ........................................ 2 (C 4)
FUSE BLOCK .................................... 3 (C 9-10)
HAZARD FLASHER .................................. 5 (C 16)
HAZARD SW ....................................... 5 (B 16)
HEAD LIGHT WASHER RELAY ....................... 5 (C-D 17)
HEATER RELAY .................................... 4 (A 12)
HORN SWITCH ..................................... 5 (E 19)
IGNITION COIL .................................... 2 (E 4)
IGNITION SW ..................................... 3 (A 11)
ILLUMINATION LIGHTS ............................ 3 (D-E 8)
INHIBITOR SW ..................................... 3 (A 9)
INSTRUMENT CLUSTER ............................ 6 (A-D 20)
KEY REMINDER SW ................................. 5 (E-17)
LIGHT CONTROL RELAY ............................. 5 (E 19)
LIGHT SWITCH .................................... 5 (D 19)
MAIN FUSE LINKS ................................ 1 (A 1-2)
METER UNIT ...................................... 6 (E 20)
MPI CONTROL RELAY ................................ 2 (B 4)
MPI CONTROL UNIT ............................... 2 (A 4-7)
NOISE FILTER ..................................... 2 (E 6)
OVERDRIVE CONTROL RELAY .......................... 3 (A 8)
Page 1329 of 1333
Fig. 3: Fuse Block, Ignition Sw, Inhibitor Sw, (A/T) (Grid 8-11)