🏷️ Basic Information

Make:

Mitsubishi

Model:

3000GT / GTO

Year:

1990

Chassis Code:

Z15A (NA), Z16A (Twin Turbo)

Engine Codes:

6G72 (3.0L V6 SOHC NA), 6G72TT (3.0L V6 DOHC Twin Turbo)

👋 Introduction

Category:

Japanese Sports Car / Grand Tourer

Positioning:

High-performance, technologically advanced flagship model.

Competitors:

Nissan 300ZX (Z32), Toyota Supra (Mk3), Mazda RX-7 (FC/FD), Chevrolet Corvette (C4).

Unique Selling Points:

Available in both Naturally Aspirated (NA) and Twin Turbo (TT) variants, sophisticated multi-link suspension, advanced aerodynamic features (active aerodynamics on later models, but precursor features present), optional four-wheel steering (AWS).

Target Audience:

Professional technicians, serious DIY mechanics, and owners dedicated to maintaining and restoring their Mitsubishi 3000GT/GTO.

📋 Manual Details

Coverage:

Full Service Repair, Maintenance, Diagnostics, Wiring Diagrams

Estimated Page Count:

Extensive (typical full service manuals for this era range from 1500-3000+ pages)

Type:

Full Service Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Complete engine overhaul, timing belt replacement, cooling system, lubrication system, fuel system, emissions control, turbocharger system (for Twin Turbo models).

Transmission:

Manual and Automatic transmission overhaul, fluid changes, clutch service, driveshaft and differential service.

Brakes:

Front and Rear brake system diagnostics, pad/rotor replacement, caliper service, ABS system (where applicable), brake fluid replacement.

Suspension:

Front and Rear suspension component replacement, shock absorber/strut service, steering system (power steering, steering rack, tie rods), alignment procedures.

Electrical:

Complete electrical system diagnostics, starting and charging systems, lighting, instrument cluster, power accessories, ECU and sensor troubleshooting, comprehensive wiring diagrams.

Bodywork:

Body panel removal/installation, door and window mechanisms, interior trim, HVAC system, exterior lighting and trim, body repair and corrosion prevention.

Diagnostics:

On-board diagnostic (OBD) system troubleshooting, fault code interpretation, sensor testing, fuel system pressure testing, ignition system testing.

Maintenance:

Scheduled maintenance intervals, oil and filter changes, fluid checks and top-offs, spark plug replacement, air filter replacement, drive belt inspection and replacement.

Repair:

Detailed step-by-step repair procedures for all major mechanical and electrical components, including engine rebuilds, transmission overhauls, suspension component replacement, and electrical system repairs.

Rebuilding:

Comprehensive instructions for rebuilding major components such as the engine, transmission, and differential, including specifications for clearances, torque values, and component tolerances.

Restoration:

Guidance for restoration projects, including advice on parts sourcing, bodywork, interior refurbishment, and mechanical system overhauls.

Depth:

Professional-level, covering everything from basic fluid changes to complete engine and transmission rebuilds. Includes detailed diagnostic procedures and wiring diagrams.

📊 Manual Specifications

Format:

PDF

Searchability:

Likely text-searchable, facilitating quick information retrieval.

Printability:

Full Printable

Binding:

N/A (Digital PDF Download)

Paper Type:

N/A (Digital PDF Download)

Delivery Method:

Instant Download

Software Requirements:

Adobe PDF Reader, WinRAR (for potential archive extraction)

Operating Systems:

All Versions of Windows & Mac

⚙️ Engine Specifications

Engine Type:

6G72 V6

Displacement:

2,972 cc (3.0 Liters)

Horsepower Na:

222 hp @ 6000 rpm (US Spec)

Torque Na:

200 lb-ft @ 4500 rpm (US Spec)

Horsepower Tt:

300 hp @ 6000 rpm (US Spec), 280 hp (JDM Spec)

Torque Tt:

307 lb-ft @ 3000 rpm (US Spec), 297 lb-ft (JDM Spec)

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Turbocharger:

Twin Garrett T25 turbochargers (on TT models)

Configuration:

SOHC 2 valves per cylinder (NA), DOHC 4 valves per cylinder (TT)

🔧 Transmission

Type:

5-speed Manual Transmission

Type:

4-speed Automatic Transmission (with sport modes)

Drivetrain:

All-Wheel Drive (AWD) with Active Transfer Case (on TT models)

Drivetrain:

Front-Wheel Drive (FWD) (on NA models), optional All-Wheel Drive (AWD) was not widely available on the 1990 NA model but became more common later.

Manual Transmission Fluid:

API GL-4 or GL-5, SAE 75W-90 (check specific manual for exact type)

Automatic Transmission Fluid:

Mitsubishi Diamond ATF SP-II or equivalent (check specific manual for exact type)

📐 Dimensions

Length:

Approx. 4,640 mm (182.7 in)

Width:

Approx. 1,840 mm (72.4 in)

Height:

Approx. 1,240 mm (48.8 in)

Curb Weight Na:

Approx. 1,570 kg (3,461 lbs)

Curb Weight Tt:

Approx. 1,660 kg (3,660 lbs)

Wheelbase:

Approx. 2,450 mm (96.5 in)

Tire Size Na:

215/60R15 (Standard), 225/55VR16 (Optional)

Tire Size Tt:

225/55VR16 (Standard), 245/45ZR17 (Optional)

Bolt Pattern:

5x114.3 mm (5x4.5 inch)

🛡️ Safety Features

NHTSA Ratings 1990:

Information for 1990 models is limited, but later generations received good ratings. Primarily reliant on passive safety systems of the era.

ABS:

Standard on Twin Turbo, optional on NA models.

Airbags:

Driver's side airbag standard.

Seatbelts:

Three-point front seatbelts with pre-tensioners.

Body Construction:

Reinforced passenger cabin, crumple zones.

💡 Technology Features

Audio System:

Factory AM/FM stereo with cassette player, optional CD player. Quality of speakers can vary by trim.

Aws:

Active Four-Wheel Steering (AWS) on many models, enhancing maneuverability at low speeds and stability at high speeds.

Climate Control:

Automatic Climate Control (on higher trims) with digital display.

Aerodynamics:

Sleek, low-drag coefficient design. Early models had fixed rear spoilers, later models introduced active aerodynamics.

🔧 Maintenance

Oil Change:

Every 3,000 - 5,000 miles or 3-6 months (typical for the era, consult manual for specifics).

Timing Belt:

Every 60,000 miles or 5 years (critical maintenance item for interference engine).

Engine Oil:

10W-30 or 10W-40 API SG/SH (check specific manual for exact type and viscosity).

Coolant:

Ethylene Glycol based coolant, typically a 50/50 mix with distilled water. Check manual for specific type (e.g., green long-life).

Brake Fluid:

DOT 3 or DOT 4.

Power Steering Fluid:

Dexron III ATF or equivalent.

Engine Reliability:

Hydraulic lifter noise (especially on older engines), potential for oil leaks, importance of strict adherence to timing belt replacement schedule (interference engine).

Electrical Issues:

Corrosion in connectors, aging wiring harnesses, issues with climate control units, power accessory failures.

Turbocharger System Tt:

Over time, seals and actuators can wear. Requires proper maintenance and oil changes to ensure longevity.

Aws System:

Can develop leaks in the hydraulic lines or steering rack over time.

📚 Vehicle History

Motorsport:

Mitsubishi has a strong motorsport heritage, particularly in rallying (Group A, WRC).

Generation Start:

First generation launched in 1990 (as a 1991 model year in North America).

Design Inspiration:

Designed to compete with European sports cars, featuring advanced technology and performance.

Manufacturing Location:

Japan

🏆 Awards & Recognition

Car And Driver 1991:

Car and Driver's Ten Best list for 1991.

Motortrend 1991:

MotorTrend's Import Car of the Year for 1991.