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Mitsubishi

1991 Mitsubishi GTO 3000GT Service & Repair Manual

1991 Mitsubishi GTO 3000GT Service & Repair Manual

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Vehicle data plateRef 394472
Brand
Mitsubishi
Vehicle
Cars
Models covered
3000GT, GTO
Years
1991
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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🏷️ Basic Information
Identification
Make:
Mitsubishi
Model:
GTO / 3000GT
Year:
1991
Codes
Chassis Code:
Z16A
Engine Code Primary:
6G72
Generation
Generation Designation:
First Generation (Z11A/Z15A/Z16A)
👋 Introduction
Market Position
Vehicle Classification:
Japanese Grand Tourer (GT) sports car, known for its advanced technology and performance for its era.
Competitive Analysis
Key Competitors Era:
Nissan 300ZX (Z32), Toyota Supra (Mk3/Mk4), Mazda RX-7 (FC/FD), Chevrolet Corvette (C4).
Key Features
Unique Technologies 1991:
Active Aerodynamics (retractable front-lip spoiler), Electronic All-Wheel Drive (AWD), Four-Wheel Steering (4WS), electronically controlled suspension (ECS) on some models (though not explicitly detailed for 1991 base models, the manual would cover its implementation if present).
📋 Manual Details
Identification
Manual Product Name:
1991 Mitsubishi GTO 3000GT Service & Repair Manual
Manual Type:
Service and Repair Manual
Language:
English
Format:
PDF Download
Compatibility:
All Versions of Windows & Mac
Requirements:
Adobe PDF Reader
Page Count
Estimated Page Count:
Not specified in product information, but typical comprehensive service manuals for this era are often between 1000-2000 pages.
📖 Manual Coverage
Systems Covered
Engine:
Detailed diagnostics, repair procedures, component overhaul, lubrication, cooling system, fuel delivery, intake and exhaust manifolds, emission control systems (including catalytic converter and EGR), timing belt replacement.
Drivetrain:
Clutch operation and adjustment, manual transaxle overhaul and repair, automatic transaxle service and diagnostics, propeller shaft inspection and replacement, power plant mount inspection and replacement.
Suspension And Steering:
Front and rear suspension systems, shock absorber and strut replacement, spring replacement, bushing inspection and replacement, alignment specifications, 4-Wheel Steering (4WS) system diagnostics and repair, steering gear, power steering system.
Brakes:
Hydraulic brake system, disc brake component service (pads, rotors, calipers), drum brake service (if applicable to specific variants not explicitly excluded), parking brake, ABS system diagnostics and bleeding procedures.
Body:
Body panel repair, interior trim removal and installation, door mechanisms, glass replacement, exterior trim, body sealant, rust prevention.
Electrical System:
Wiring diagrams, fuse box locations and identification, lighting system, charging system (alternator, battery), starting system (starter motor), ignition system, gauges and instruments, power windows, power mirrors, power seats, horn, wiper and washer system.
Emission Control:
Detailed coverage of emission control systems specific to the 1991 model year, including exhaust gas recirculation (EGR), evaporative emission control (EVAP), and catalytic converter operation and diagnosis.
Climate Control:
Heater, air conditioning system operation, component replacement (compressor, condenser, evaporator), refrigerant handling (following industry standards of the time).
Fuel System Detailed:
Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator, evaporative emission control system.
Wheels And Tires:
Wheel specifications, tire pressure recommendations, lug nut torque specifications, wheel bearing service.
Body And Frame:
Body construction, door panel removal, quarter panel repair, frame alignment data, glass replacement procedures.
Procedures Included
Maintenance:
Scheduled maintenance intervals, oil and filter changes, fluid level checks and top-offs (coolant, brake fluid, power steering fluid, transmission fluid, differential fluid), spark plug replacement, air filter replacement, fuel filter replacement, timing belt replacement.
Repair And Rebuild:
Step-by-step instructions for engine overhaul (short block, long block, cylinder head), transmission rebuild, brake caliper overhaul, suspension component replacement, steering rack replacement, fuel pump replacement, radiator replacement, starter motor replacement, alternator replacement.
Diagnostics And Troubleshooting:
Systematic diagnostic procedures for common and complex issues, symptom-based troubleshooting guides, diagnostic trouble codes (if applicable), electrical system troubleshooting using wiring diagrams, engine performance diagnosis.
Troubleshooting Charts:
Diagnostic flowcharts based on symptoms, facilitating systematic problem identification.
Torque Specifications:
Detailed torque values for critical fasteners across all systems, ensuring proper assembly and preventing component damage.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all major systems, crucial for electrical troubleshooting and repairs.
Technical Depth
Depth Of Coverage:
Comprehensive workshop level coverage, suitable for experienced DIY enthusiasts and professional technicians. Includes detailed torque specifications, clearances, diagnostic flowcharts, and component removal/installation procedures.
📊 Manual Specifications
File Details
File Format Type:
Digital Download (PDF)
Print Quality:
High-resolution, digitally formatted for clarity. Printable pages.
Searchability:
Likely text-searchable if created from a digital source, aiding quick access to information.
Searchability Enhancement:
PDF format allows for keyword searches, significantly speeding up information retrieval for specific repairs or components.
Physical Attributes
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine Type:
Naturally Aspirated V6 (SOHC for base, DOHC for Twin Turbo variants which are not the primary focus of the '1991 GTO 3000GT' designation without further specification, but manual often covers all variants)
Engine Code:
6G72
Displacement:
3.0 Liters (2972 cc)
Performance Na
Horsepower Na:
Approximately 218-222 hp @ 6000 rpm (US Market Spec for non-turbo)
Torque Na:
Approximately 200-205 lb-ft @ 4500 rpm (US Market Spec for non-turbo)
Fuel System
Fuel Delivery:
Electronic Fuel Injection (EFI)
Recommended Fuel:
Unleaded Gasoline (Octane Rating typically 87 or higher, check manual for specific grade)
Cooling System
Cooling Type:
Liquid Cooled
Lubrication
Oil Capacity Approx:
Approx. 4.5-5.0 US quarts (4.3-4.7 liters) with filter. Consult manual for exact capacity.
Recommended Oil Viscosity:
Typically 10W-30 or 5W-30 API Service SG or higher. Consult manual for specific grade and temperature range.
Ignition System
Ignition Type:
Electronic Ignition (Distributorless ignition system for some models/markets, but 1991 likely had distributor)
Engine Code Variants
Twin Turbo Spec Note:
While the 1991 GTO/3000GT was available as a Twin-Turbo (engine code 6G72 TT), this manual likely covers both naturally aspirated and twin-turbo variants if it's a complete service manual, detailing their distinct components and procedures.
🔧 Transmission
Standard
Type:
5-Speed Manual Transaxle
Optional
Type:
4-Speed Automatic Transaxle
Features
Manual Fluid Spec:
GL-4 Hypoid Gear Oil, SAE 75W-90 or equivalent. Consult manual for precise specification and capacity.
Automatic Fluid Spec:
Dexron III ATF or equivalent. Consult manual for precise specification and capacity.
Drive System:
All-Wheel Drive (AWD) with viscous coupling center differential for most models. Front-wheel drive (FWD) may have been available in certain markets.
📐 Dimensions
Exterior
Length:
Approx. 4620 mm (181.9 in)
Width:
Approx. 1840 mm (72.4 in)
Height:
Approx. 1250 mm (49.2 in)
Wheelbase:
Approx. 2500 mm (98.4 in)
Weights
Curb Weight:
Approx. 1550-1650 kg (3417-3638 lbs) depending on transmission and options.
🛡️ Safety Features
Ratings
NHTSA Ratings Era:
While formal NHTSA ratings for this specific 1991 model are not readily available as they are today, the vehicle was designed with safety in mind. The manual would detail safety-related components and inspections.
Active Features
ABS:
Anti-lock Braking System (ABS) likely standard or optional on higher trims for 1991.
AWD:
All-Wheel Drive (AWD) system provides enhanced traction and stability.
Passive Features
Airbags:
Driver's airbag typically standard on most markets for 1991.
Seat Belts:
Three-point seatbelts, potentially with pretensioners for driver and front passenger.
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM stereo with cassette player, and possibly a CD player on higher trims. Manual would cover basic operation and speaker replacement.
Driver Assistance
Four Wheel Steering:
Active 4-Wheel Steering (4WS) system for improved maneuverability at low speeds and stability at high speeds. Manual provides diagnostic and repair procedures.
Active Aerodynamics:
Retractable front-lip spoiler for improved drag coefficient at higher speeds. Manual covers its operation and potential issues.
Electronic Suspension:
While not standard on all 1991 models, ECS was available. Manual would detail its operation and service if present.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically 3,000-5,000 miles (5,000-8,000 km) or 6 months, whichever comes first. Consult manual for specific recommendations.
Timing Belt Replacement Interval:
Critical interval, often around 60,000 miles (96,000 km) or 5 years. Failure can cause catastrophic engine damage. Consult manual for exact specification.
Coolant Change Interval:
Typically every 2 years or 30,000 miles (48,000 km). Consult manual for specific coolant type and interval.
Fluid Specifications
Coolant Type:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water. Consult manual for specific type and capacity.
Brake Fluid Type:
DOT 3 or DOT 4. Consult manual for precise specification.
Known Issues
Common Wear Items:
Strut mounts, bushings, CV joints, fuel injectors (clogging), and electrical connectors can be prone to wear and failure over time. Timing belt replacement is crucial.
Active Aero System:
The active aerodynamic systems (like the front lip spoiler) can be prone to electrical or mechanical failure due to age and complexity.
📚 Vehicle History
Brand Heritage
Mitsubishi Motors:
Mitsubishi Motors has a history of producing robust vehicles, often incorporating advanced technology. The GTO/3000GT was a flagship model designed to compete with global sports car marques.
Model Evolution
First Generation Introduction:
The Mitsubishi GTO (marketed as 3000GT in North America and Australia, and as GTO in Japan) was introduced in 1990 for the 1991 model year. It was a significant departure from its predecessor, the Starion, with a focus on advanced technology and luxury.
Production
Manufacturing Location:
Japan
Development Focus:
Developed to be a technological showcase, featuring groundbreaking advancements for its time.
🏆 Awards & Recognition
Recognitions
Car And Driver Ten Best:
While the 3000GT was a recipient of Car and Driver's Ten Best list in later years (1992-1993), the 1991 model laid the groundwork for this acclaim through its technological advancements and performance.

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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