Mitsubishi Montero (1991+). Manual — part 300

Starter Drive Starter motor loose on Tighten starter

Will Not mountings attach bolts

Disengage

Worn drive end bushing See STARTER article

Damaged engine flywheel Replace flywheel and

teeth starter pinion gear for

damage

Drive yolk return spring Replace return spring

broken or missing

Faulty ignition switch Replace ignition switch

Insufficient clearance Replace starter

between winding leads to solenoid

solenoid terminal and main

contact in solenoid

Starter clutch not Replace starter clutch

disengaging

Ignition starter switch Replace ignition switch

contacts sticking

Starter Relay Faulty solenoid switch, Check all wiring

Operates but switch connections or between relay and

Solenoid Does Not solenoid or replace

relay or solenoid as

necessary

Broken lead or loose Repair wire or wire

soldered connections connections as

necessary

Solenoid Plunger Weak battery Charge or replace

Vibrates When battery as necessary

Switch is Engaged

Solenoid contacts Clean contacts or

corroded replace solenoid

Faulty wiring Check all wiring

leading to solenoid

Broken connections inside Repair connections or

switch cover replace solenoid

Open hold-in wire Replace solenoid

Low Current Draw Worn brushes or weak Replace brushes or

brush springs as

necessary

High Pitched Whine Distance too great Align starter or check

During Cranking between starter that correct starter

Before Engine pinion and flywheel and flywheel are being

Fires but Engine used

Fires and Cranks

Normally

High Pitched Distance too small between

Whine After Engine starter pinion and flywheel

Fires With Key Flywheel runout contributes

released. Engine to the intermittent nature

Fires and Cranks

Normally

AIR CONDITIONING & HEAT

AIR CONDITIONING TROUBLE SHOOTING

WARNING: 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 AIR CONDITIONING TROUBLE SHOOTING CHART

CONDITION POSSIBLE CAUSE

Compressor Not Working

Compressor clutch circuit open.

Compressor clutch coil inoperative.

Poor clutch ground connection.

Fan belts loose.

Thermostatic switch inoperative.

Thermostatic switch not adjusted.

Ambient temperature switch open.

Superheat fuse blown.

Excessive Noise or Vibration

Missing or loose mounting bolts.

Bad idler pulley bearings.

Fan belts not tightened correctly.

Compressor clutch contacting body.

Excessive system pressure.

Compressor oil level low.

Damaged clutch bearings.

Damaged reed valves.

Damaged compressor.

Insufficient or No Cooling;

Compressor Working

Expansion valve inoperative.

Heater control valve stuck open.

Low system pressure.

Blocked condenser fins.

Blocked evaporator fins.

Vacuum system leak.

Vacuum motors inoperative.

Control cables improperly adjusted.

Restricted air inlet.

Mode doors binding.

Blower motor inoperative.

Temperature above system capacity.

HEATER 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 DIAGNOSTIC, or TESTING articles available in the

section(s) you are accessing.

BASIC HEATER SYSTEM TROUBLE SHOOTING CHART

CONDITION POSSIBLE CAUSE

Insufficient, Erratic,

or No Heat

Low Coolant Level

Incorrect thermostat.

Restricted coolant flow through

heater core.

Heater hoses plugged.

Misadjusted control cable.

Sticking heater control valve.

Vacuum hose leaking.

Vacuum hose blocked.

Vacuum motors inoperative.

Blocked air inlet.

Inoperative heater blower motor.

Oil residue on heater core fins.

Dirt on heater core fins.

Too Much Heat

Improperly adjusted cables.

Sticking heater control valve.

No vacuum to heater control valve.

Temperature door stuck open.

Air Flow Changes During

Acceleration

Vacuum system leak.

Bad check valve or reservoir.

Air From Defroster At All

Times

Vacuum system leak.

Improperly adjusted control cables.

Inoperative vacuum motor.

Blower Does Not Operate

Correctly

Blown fuse.

Blower motor windings open.

Resistors burned out.

Motor ground connection loose.

Wiring harness connections loose.

Blower motor switch inoperative.

Blower relay inoperative.

Fan binding or foreign object

in housing.

Fan blades broken or bent.

BRAKES

BRAKE 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.

BRAKE SYSTEM TROUBLE SHOOTING CHART

CONDITION POSSIBLE CAUSE CORRECTION

Brakes Pull Left

or Right Incorrect tire pressure Inflate tires to proper

pressure

Front end out of alignment See WHEEL ALIGNMENT

Mismatched tires Check tires sizes

Restricted brake lines

or hoses Check hose routing

Loose or malfunctioning

caliper See DISC BRAKES or

BRAKE SYSTEM

Bent shoe or oily linings See DRUM BRAKES or

BRAKE SYSTEM

Malfunctioning rear brakes See DRUM, DISC BRAKES

or BRAKE SYSTEM

Loose suspension parts See SUSPENSION

Noises Without

Brakes Applied Front linings worn out Replace linings

Dust or oil on drums See DRUM, DISC BRAKES

or rotors or BRAKE SYSTEM

Noises With

Brakes Applied Insulator on outboard See DISC BRAKES or

shoe damaged BRAKE SYSTEM

Incorrect pads or linings Replace pads or linings

Brake Rough, Chatters

or Pulsates Excessive lateral runout Check rotor runout

Parallelism not to

specifications Reface or replace rotor

Wheel bearings not adjusted See SUSPENSION

Rear drums out-of-round Reface or replace drums

Disc pad reversed, steel

against rotor Remove and reinstall

pad

Excessive Pedal

Effort Malfunctioning power unit See POWER BRAKES or

BRAKE SYSTEM

Partial system failure Check fluid and pipes

Worn disc pad or lining Replace pad or lining

Caliper piston stuck or