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.
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.
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
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)
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)
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)
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.
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.
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.
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
