Mitsubishi Montero (1991+). Manual — part 301

sluggish See DISC BRAKES or

BRAKE SYSTEM

Master cylinder piston

stuck See MASTER CYLINDERS

or BRAKE SYSTEM

Brake fade due to incorrect

pads for linings Replace pads or linings

Linings or pads glazed Replace pads or linings

Worn drums Reface or replace drums

Excessive Pedal

Travel Partial brake system failure Check fluid and pipes

Insufficient fluid in

master cylinder See MASTER CYLINDERS or

BRAKE SYSTEM

Air trapped in system See BRAKE BLEEDING or

BRAKE SYSTEM

Rear brakes not adjusted See Adjustments in DRUM

BRAKES or BRAKE SYSTEM

Bent shoe or lining See DRUM BRAKES or

BRAKE SYSTEM

Plugged master cylinder cap See MASTER CYLINDERS

or BRAKE SYSTEM

Improper brake fluid Replace brake fluid

Pedal Travel

Decreasing Compensating port plugged See MASTER CYLINDERS

or BRAKE SYSTEM

Swollen cup in master

cylinder See MASTER CYLINDERS

or BRAKE SYSTEM

Master cylinder piston

not returning See MASTER CYLINDERS

or BRAKE SYSTEM

Weak shoe retracting springs See DRUM BRAKES

BRAKE SYSTEM

Wheel cylinder piston

sticking See DRUM BRAKES or

BRAKE SYSTEM

Dragging

Brakes Master cylinder pistons

not returning See MASTER CYLINDERS

BRAKE SYSTEM

Restricted brake lines

or hoses Check line routing

Incorrect parking brake

adjustment See DRUM BRAKES

BRAKE SYSTEM

Parking Brake cables frozen See DRUM BRAKES

BRAKE SYSTEM

Incorrect installation of

inboard disc pad Remove and replace

correctly

Power booster output

rod too long See POWER BRAKE UNITS

BRAKE SYSTEM

Brake pedal not returning See DISC, DRUM BRAKES

freely BRAKE SYSTEM

Brakes Grab or

Uneven Braking

Action Malfunction of combination See CONTROL VALVE or

valve BRAKE SYSTEM

Malfunction of power brake See POWER BRAKE UNITS

unit or BRAKE SYSTEM

Binding brake pedal See DISC, DRUM BRAKES

or BRAKE SYSTEM

Pulsation or

Roughness Uneven pad wear caused by See DISC BRAKES or

caliper BRAKE SYSTEM

Uneven rotor wear See DISC BRAKES or

BRAKE SYSTEM

Drums out-of-round Reface or replace drums

ENGINE MECHANICAL

COOLING SYSTEM 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.

COOLING SYSTEM TROUBLE SHOOTING

CONDITION POSSIBLE CAUSE CORRECTION

Overheating Coolant Leak Fill/Pressure Test

System

A/C Condenser Fins Clogged Remove/Clean Condenser

Radiator Fins Clogged Remove/Clean Radiator

Thermostat Stuck Closed Replace Thermostat

Clogged Cooling System

Passages Clean/Flush Cooling

System

Water Pump Malfunction Replace Water Pump

Fan Clutch Malfunction Replace Fan Clutch

Retarded Ignition Timing Reset Ignition Timing

Cooling Fan Malfunction Test Cooling Fan/

Circuit

Cooling Fan Motor

Malfunction Test Fan Motor

Cooling Fan Relay

Malfunction Test Fan Relay

Faulty Radiator Cap Replace Radiator Cap

Broken/Slipping Fan Belt Replace Fan Belt

Restricted Exhaust Repair Exhaust System

Corrosion Impurities In Coolant Clean/Flush System

Coolant Leakage Damaged hose Replace Hose

Leaky Water Pump Replace Water Pump

Damaged Radiator Seam Replace/Repair Radiator

Leaky Thermostat Cover Replace Thermostat

Cover

Cylinder Head Problem Check Head/Head Gasket

Leaky Freeze Plugs Replace Freeze Plugs

Recovery System Inoperative

Loose and/or Defective

Radiator Cap Replace Radiator Cap

Overflow Tube Clogged

and/or Leaking Repair Tube

Recovery Bottle Vent

Restricted Clean Vent

No Heater Core Flow

Collapsed Heater Hose Replace Heater Hose

Plugged Heater Core Clean/Replace Heater

Core

Faulty Heater Valve Replace Heater Valve

GASOLINE ENGINE - MECHANICAL 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 GASOLINE ENGINE - MECHANICAL TROUBLE SHOOTING CHART

CONDITION POSSIBLE CAUSE CORRECTION

Engine Lopes At Intake manifold-to-head Replace manifold

Idle leaks gasket, See ENGINES

Blown head gasket Replace head gasket,

See ENGINES

Worn timing gears, chain Replace gears, chain or

or sprocket sprocket

Worn camshaft lobes Replace camshaft, See

ENGINES

Overheated engine Check cooling system,

See COOLING

Blocked crankcase vent Remove restriction

valve

Leaking EGR valve Repair leak and/or

replace valve

Faulty fuel pump Replace fuel pump

Engine Has Low Leaking fuel pump Repair leak and/or

Power replace fuel pump

Excessive piston-to-bore Install larger pistons,

clearance See ENGINES

Sticking valves or weak Check valve train

valve springs components, See ENGINES

Incorrect valve timing Reset valve timing, See

ENGINES

Worn camshaft lobes Replace camshaft, See

ENGINES

Blown head gasket Replace head gasket.

See ENGINES.

Clutch slipping Adjust pedal and/or

replace components, See

ENGINES

Engine overheating Check cooling system,

See COOLING

Auto. Trans. pressure

regulator valve faulty Replace pressure

regulator valve

Auto. Trans. fluid level Add fluid as necessary

too low

Improper vacuum diverter

valve operation Replace vacuum diverter

valve

Vacuum leaks Inspect vacuum system

and repair as required

Leaking piston rings Replace piston rings,

See ENGINES

Faulty High Low fuel pump volume Replace fuel pump

Speed Operation

Leaking valves or worn Replace valves and/or

springs, See ENGINES

Incorrect valve timing Reset valve timing,See

ENGINES

Intake manifold restricted Remove restriction

Worn distributor shaft Replace distributor

Faulty Improper fuel pump stroke Remove pump and reset

Acceleration pump stroke