1990 Mitsubishi Montero service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical diagnostics with wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
Trims covered
- SP Sport Utility 2-Door
- RS Sport Utility 4-Door
- Sport Sport Utility 2-Door
- Base Sport Utility 4-Door
- LS Sport Utility 4-Door
Engines covered
- 3.0L 2972CC 181Cu. In. V6 GAS SOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
THE FRONT SAFETY BELT BUCKLE RELEASE BUTTONS CAN BREAK. THESE RED PLASTIC RELEASE BUTTONS ARE MARKED "PRESS." IF A BUTTON BREAKS, PIECES CAN FALL INTO THE BUCKLE ASSEMBLY CAUSING THE BUCKLE TO OPERATE
THE SAFETY BELTS WOULD NOT PROVIDE ADEQUATE PROTECTION TO AN OCCUPANT IN A VEHICLE CRASH.
OWNERS SHOULD PROMPTLY CHECK THE CONDITION AND OPERATION OF BOTH FRONT SAFETY BELT BUCKLES AND CAREF
This Technical Service Bulletin updates the door adjustment procedure in the Body Section of the applicable service manuals.
NEW VALVE LASH ADJUSTER NOISE CHECKING AND TROUBLESHOOTING PROCEDURES. *JD
SUDDEN ACCELERATION AFTER ENGAGING VEHICLE INTO GEAR, RESULTED IN CRASH. THERE WAS PROPERTY DAMAGE, AND VEHICLE WAS TOTALED BY INSURANCE COMPANY. DEALER/MANUFACTURER NOTIFIED. *AK *ML
WHILE DRIVING THE THROTTLE STUCK, CAUSING THE VEHICLE TO INCREASE SPEED, OWNER PUT VEHICLE INTO NEUTRAL, HIT BRAKE AND VEHICLE SPUN OUT OF CONTROL, RESULTING IN A VEHICLE ROLLOVER. *AK
1990 MITUSBISHI MONTERO STARTED TO SMOKE. CONSUMER PULLED OVER TO SHOULDER AND VEHICLE BECAME ENGULFED IN FLAMES. *NJOHIO TRAFFIC CRASH REPORT # 10-0206-89. *JB
VEHICLE WAS PARKED ON DRIVEWAY FOR ABOUT 5 MINUTES WHEN AN UNDERHOOD FIRE STARTED IN ENGINE. PRIOR TO INCIDENT, CONSUMER HAD A BROKEN THERMOSTAT REPLACED. *AK *SLC
THE BOLT ON THE FRONT OF THE CRANKSHAFT BROKE OFF, CAUSING THE PULLEY AND BELT TO FLY OFF, RESULTING IN LOSS OF POWER STEERING AND LOSS OF VEHICLE CONTROL.
Showing the 5 most serious of 25 complaints filed with NHTSA.
