1991 MITSUBISHI MONTERO power steering

Free play in pot coupling See POWER STEERING PUMP
article
Steering gear coupling See POWER STEERING PUMP
loose on shaft article
Steering disc mounting Tighten or replace if
bolts loose necessary
Coupling loose on worm Tighten or replace if
shaft necessary
Improper sector shaft See POWER STEERING GEAR
adjustment article
Excessive worm piston See POWER STEERING GEAR
side play article
Damaged valve lever See POWER STEERING GEAR
article
Universal joint loose Tighten or replace if
necessary
Defective rotary valve See POWER STEERING GEAR
article









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No Power When Sticking flow control See POWER STEERING PUMP
Parking valve article
Insufficient pump See POWER STEERING PUMP
pressure output article
Excessive internal pump See POWER STEERING PUMP
leakage article
Excessive internal gear See POWER STEERING PUMP
leakage article
Flange rubs against gear See STEERING COLUMN
adjust plug article
Loose pump belt Adjust or replace if
necessary
Low fluid level Check and add proper
amount of fluid
Engine idle too low Adjust to correct
setting
Steering gear-to-column See STEERING COLUMN
misaligned article









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No Power, Left turn reaction seal See POWER STEERING GEAR
Left Turn "O" ring worn article
Left turn reaction seal See POWER STEERING GEAR
damaged/missing article
Cylinder head "O" ring See POWER STEERING PUMP
damaged article









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No Power, Column pot coupling See STEERING COLUMN
Right Turns bottomed article
Right turn reaction seal See POWER STEERING GEAR
"O" ring worn article
Right turn reaction seal See POWER STEERING GEAR
damaged article
Internal leakage through See POWER STEERING GEAR
piston end plug article
Internal leakage through See POWER STEERING GEAR
side plugs article









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Lack of Effort Left and/or right Replace, see POWER
in Turning reaction seal sticking STEERING GEAR article
in cylinder head









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Wanders to One Front end alignment See WHEEL ALIGNMENT
Side incorrect article
Unbalanced steering See POWER STEERING GEAR
gear valve article









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Low Pressure Due Flow control valve stuck See POWER STEERING PUMP
to Steering Pump or inoperative article
Pressure plate not flat See POWER STEERING PUMP
against cam ring article
Extreme wear of cam ring Replace and check
adjustments
Scored plate, thrust See POWER STEERING PUMP
plate or rotor article
Vanes not installed See POWER STEERING PUMP
properly article
Vanes sticking in rotor See POWER STEERING PUMP
slots article
Cracked/broken thrust or See POWER STEERING PUMP
pressure plate article









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STEERING COLUMN 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 STEERING COLUMN TROUBLE SHOOTING CHART









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CONDITION POSSIBLE CAUSE CORRECTION








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Noise in Coupling pulled apart See STEERING COLUMNS
Steering article

Loose or worn wheel See WHEEL ALIGNMENT
bearings
Loose or worn tie rod ends See SUSPENSION
Worn upper ball joints See Ball Joint Checking
in SUSPENSION
Worn shock absorbers Replace shock absorbers
Worn strut bushings Replace strut bushings









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Car Pulls to Mismatched or uneven tires Check tire condition
One Side
Broken or sagging springs See SUSPENSION
Loose or worn strut See SUSPENSION
bushings
Improper wheel alignment See WHEEL ALIGNMENT
Improper rear axle Check rear axle
alignment alignment
Power steering gear See STEERING
unbalanced
Front brakes dragging See BRAKES









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Abnormal Tire Unbalanced tires Check tire balance &
Wear rotation
Sagging or broken springs See SUSPENSION
Incorrect front end See WHEEL ALIGNMENT
alignment
Faulty shock absorbers Replace chock absorbers









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Scuffed Tires Toe-In incorrect See WHEEL ALIGNMENT
Suspension arm bent or See appropriate
twisted SUSPENSION article









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Springs Bottom Bent or broken springs See SUSPENSION
or Sag
Leaking or worn shock Replace shock absorbers
absorbers
Frame misalignment Check frame for damage









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Spring Noises Loose "U" Bolts See SUSPENSION
Loose or worn bushings See SUSPENSION
Worn or missing interliners See SUSPENSION









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Shock Absorber Loose shock mountings Check & tighten
Noise mountings
Worn bushings Replace bushings

Mismatched tires See WHEEL ALIGNMENT
Broken or sagging spring See SUSPENSION section
Broken torsion bar See SUSPENSION section
Power steering valve not See STEERING section
centered
Front alignment out of See WHEEL ALIGNMENT
tolerance section
Defective wheel bearing See WHEEL BEARINGS in
SUSPENSION section
Uneven sway bar links See SUSPENSION section
Frame bent Check for frame damage
Steering system bushing See STEERING section
worn









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Hard Steering Idler arm bushing too tight See STEERING LINKAGE
in STEERING section
Ball joint tight or seized See SUSPENSION section
Steering linkage too tight See STEERING LINKAGE in
STEERING section
Power steering fluid low Add proper amount of
fluid
Power steering drive belt See STEERING section
loose
Power steering pump See STEERING section
defective
Steering gear out of See STEERING section
adjustment
Incorrect wheel alignment See WHEEL ALIGNMENT
Damaged steering gear See STEERING section
Damaged suspension See SUSPENSION section
Bent steering knuckle or See SUSPENSION section
supports









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Vehicle Strut rod or control arm See SUSPENSION section
"Wanders" bushing worn
Loose or worn wheel See WHEEL BEARINGS in
bearings SUSPENSION section
Improper tire inflation Check tire pressure
Stabilizer bar missing or See SUSPENSION section
defective

Wheel alignment out of See Adjustment in
tolerance WHEEL ALIGNMENT section
Broken spring See SUSPENSION section
Defective shock absorbers Replace shock absorbers
Worn steering & suspension See SUSPENSION section
components









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Front End Shimmy Tire out of balance/round Check tire balance
Excessive wheel runout See WHEEL ALIGNMENT
Insufficient or improper See WHEEL ALIGNMENT
caster section
Worn suspension or steering See SUSPENSION section
components
Defective shock absorbers Replace shock absorber
Wheel bearings worn or See WHEEL BEARING ADJ.
loose in SUSPENSION section
Power steering reaction See STEERING section
Bracket loose
Steering gear box (rack) See STEERING section
mounting loose
Steering gear adjustment See STEERING section
loose
Worn spherical joints See SUSPENSION section









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Toe-In Not Lower control arm bent See SUSPENSION section
Adjustable
Frame bent Check frame for damage









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Camber Not Control arm bent See SUSPENSION section
Adjustable
Frame bent Check frame for damage
Hub & bearing not seated See SUSPENSION section
properly









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