1991 Mitsubishi 3000GT Factory Service Repair Manual

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🏷️ Basic Information Identification Make: Mitsubishi Model: 3000GT Year: 1991 Chassis Code: Z16A Codes Engine Code: 6G72 (3.0L V6) 👋 Introduction Market Position Era: Early 1990s Japanese sports car, competitor...

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Type: Car

Vendor:

Sku: 541636

Tags: 1991 3000GT Car Cars Misc Mitsubishi

Product variants

Description

🏷️ Basic Information

Identification

Make:

Mitsubishi

Model:

3000GT

Year:

Chassis Code:

Codes

Engine Code:

6G72 (3.0L V6)

👋 Introduction

Market Position

Early 1990s Japanese sports car, competitor to cars like Nissan 300ZX, Toyota Supra, and Mazda RX-7.

Segment:

Grand Tourer (GT) sports car, featuring advanced technology and performance for its time.

Competitive Analysis

Features Vs Competitors:

The 3000GT offered advanced features like All-Wheel Drive (AWD), Active Aerodynamics, and Electronically Controlled Suspension (ECS) on certain trims, setting it apart from some rivals.

Key Features

Aerodynamics:

Active front and rear spoilers (on certain models) for optimized downforce at different speeds.

Handling:

Available Full-Time Four-Wheel Drive (4WD) and All-Wheel Steering (AWS) for enhanced grip and agility.

Powertrain:

Powerful 3.0L V6 engine, with a twin-turbocharged variant offering significant horsepower gains.

📋 Manual Details

Coverage Areas

Primary Coverage:

Complete service and repair for the 1991 Mitsubishi 3000GT.

Engine Coverage:

6G72 3.0L V6, including twin-turbo variants if applicable to 1991 US market models.

Drivetrain Coverage:

Manual and Automatic Transaxle, Clutch, Propeller Shaft, Front Axle, Rear Axle.

Chassis Coverage:

Wheel and Tire, Power Plant Mount.

System Coverage:

Fuel, Cooling, Intake and Exhaust, Emission Control.

Page Count

Estimated Pages:

1500+

Manual Type

Type:

Factory Service Manual (FSM)

Language

Language:

English

Format

Format:

Downloadable PDF

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine overhaul, cylinder head, piston and connecting rod, crankshaft, camshaft, timing belt, lubrication system.

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, fuel lines.

Cooling System:

Radiator, water pump, thermostat, cooling fan, coolant hoses, heater core.

Intake Exhaust:

Intake manifold, exhaust manifold, catalytic converter, muffler, exhaust pipes.

Emission Control:

EGR system, EVAP system, PCV system, O2 sensors.

Clutch System:

Clutch disc, pressure plate, release bearing, clutch master cylinder, clutch slave cylinder, hydraulic lines.

Manual Transmission:

Gearbox overhaul, gears, synchros, shift forks, internal components, shift linkage.

Automatic Transmission:

Transmission overhaul, torque converter, planetary gear sets, valve body, electronic controls (if applicable).

Drivetrain Axles:

Front and rear axle assemblies, CV joints, differential, drive shafts.

Wheels Tires:

Wheel bearing replacement, tire pressure, wheel alignment specifications.

Steering Suspension:

Power steering system, suspension components (struts, control arms, ball joints), steering rack.

Braking System:

Brake fluid, master cylinder, brake calipers, brake pads, brake rotors, ABS system (if equipped).

Electrical System:

Battery, alternator, starter motor, ignition system, lighting system, wiring diagrams, fuses, relays.

HVAC System:

Air conditioning, heating, ventilation, climate control components.

Body Interior:

Body panel removal, interior trim, seats, door mechanisms, glass replacement.

Procedures Included

Maintenance Procedures:

Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, belt replacements.

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting, common fault finding for all major systems.

Repair Procedures:

Detailed step-by-step instructions for component removal, repair, and reinstallation.

Overhaul Procedures:

Comprehensive guides for engine, transmission, and differential rebuilds.

Diagnostic Procedures:

Guidance on using diagnostic tools, reading trouble codes, and performing system checks.

Wiring Diagrams:

Complete and detailed electrical wiring schematics for all vehicle systems.

Technical Depth

Depth:

Expert level, covering everything from routine maintenance to complete engine and transmission rebuilds, including advanced diagnostics and specifications.

📊 Manual Specifications

File Format

File Type:

Searchable:

Printable:

Resolution:

High-resolution scans for clear diagrams and text.

Print Quality

Quality:

N/A (Digital Download)

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

6G72, 3.0L SOHC/DOHC V6

Displacement:

2972 cc (3.0 Liters)

Bore X Stroke:

91.1 mm x 76.0 mm

Compression Ratio:

8.0:1 (Naturally Aspirated), 7.8:1 (Twin-Turbo)

Performance

Horsepower Naturally Aspirated:

220 hp @ 6000 rpm

Torque Naturally Aspirated:

200 lb-ft @ 4500 rpm

Horsepower Twin Turbo:

300 hp @ 6000 rpm

Torque Twin Turbo:

315 lb-ft @ 3000 rpm

Fuel System

Fuel Delivery:

Multi-point Electronic Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (Premium Recommended)

Turbocharger:

Twin-turbocharged (on VR-4 models)

🔧 Transmission

Standard

Manual Transmission:

5-speed manual transaxle

Optional

Automatic Transmission:

4-speed automatic transaxle (optional on some trims)

Features

All Wheel Drive:

Full-time 4-wheel drive (standard on VR-4, optional on others)

All Wheel Steering:

AWS system (standard on VR-4)

Fluid Specifications

Manual Transaxle Fluid:

GL-4 (API Service Classification) 75W-90 or 80W-90 gear oil (Check specific manual for exact type and capacity)

Automatic Transaxle Fluid:

Dexron II or equivalent (Check specific manual for exact type and capacity)

📐 Dimensions

Exterior

Length:

4600 mm (181.1 in)

Width:

1795 mm (70.7 in)

Height:

1250 mm (49.2 in)

Wheelbase:

2500 mm (98.4 in)

Front Track:

1535 mm (60.4 in)

Rear Track:

1515 mm (59.6 in)

Weights

Curb Weight Naturally Aspirated:

Approx. 1550 kg (3417 lbs)

Curb Weight Twin Turbo:

Approx. 1630 kg (3594 lbs)

🛡️ Safety Features

Ratings

NHTSA Front Impact:

Not rated or not available for this model year in many markets.

IIHS Crash Test:

Not rated or not available for this model year.

Active Features

Anti-lock Braking System (ABS) standard on VR-4, optional on others.

Active All-Wheel Steering system for improved maneuverability.

Passive Features

Airbags:

Driver's side airbag (may not be standard on all trims).

Seatbelts:

3-point front seat belts with pretensioners.

💡 Technology Features

Infotainment

Audio System:

Factory premium sound system, potentially with cassette player and equalizer.

Driver Assistance

Active Aero:

Adjustable front and rear spoilers that automatically change angle based on vehicle speed (on VR-4).

Electronically Controlled Suspension allowing driver selection of ride comfort (on VR-4).

Connectivity

Early Electronics:

Features like power windows, mirrors, cruise control, and climate control were standard on higher trims.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 5,000 miles or 6 months (or consult manual for specific severe/normal conditions).

Timing Belt Replacement:

Typically every 60,000-90,000 miles or 5-7 years for the 6G72 engine. Critical to follow manual's recommendation.

Spark Plug Replacement:

Refer to manual; typically 30,000-60,000 miles depending on plug type.

Fluid Specifications

Engine Oil Type:

API SG or SH, SAE 10W-30 or 10W-40 (Consult manual for exact viscosity and capacity).

Coolant Type:

Mitsubishi Super Long Life Coolant (or equivalent ethylene glycol-based coolant with demineralized water).

Brake Fluid Type:

DOT 3 or DOT 4 (Check manual for specific requirement).

Known Issues

Engine Reliability:

Timing belt failure can cause catastrophic engine damage if not replaced on schedule. Early models sometimes had issues with the active aerodynamics and ECS systems.

Turbo Issues:

Oil seals and wastegates on twin-turbo models can be prone to wear over time, affecting boost pressure.

Transmission Issues:

Clutch wear is common with spirited driving. Automatic transmissions can develop issues with solenoid packs or valve bodies.

Part Numbers Example

Oil Filter Example:

MD095778 (Original Mitsubishi, cross-reference with aftermarket brands like Fram PH2, Wix 51042, K&N HP-3001)

📚 Vehicle History

Brand Heritage

Parent Company:

Mitsubishi Motors Corporation.

Model Evolution

First Generation:

The first generation debuted in 1990 for the 1991 model year, featuring a radical design and advanced technology.

Predecessor:

There was no direct predecessor named 3000GT; it was a new flagship sports car for Mitsubishi.

Global Variants:

Sold as the Mitsubishi GTO in Japan.

Production

Production Period:

1990-2000

Manufacturing Location:

Japan

🏆 Awards & Recognition

Recognitions

Car And Driver 10Best:

The Mitsubishi 3000GT VR-4 was named to Car and Driver's Ten Best list for 1991.

Motor Trend Car Of The Year:

Did not win Motor Trend Car of the Year, but was a strong contender in the sports car segment.