The 1991 Mitsubishi 3000GT, also known as the GTO in Japan, represents a pinnacle of Japanese automotive engineering for its era. Positioned as a premium grand tourer, it competed with esteemed sports cars through its innovative technologies and performance-oriented design. Key features include advanced active aerodynamics with an active front spoiler and adjustable rear wing on select trims, sophisticated all-wheel-drive (AWD) and all-wheel-steering (AWS) systems for enhanced handling, and electronically controlled suspension (ECS). Powered by a 3.0L V6 engine, available in naturally aspirated or twin-turbo configurations, the 3000GT offered impressive horsepower and torque, making it a capable performer on the road. Its robust chassis and focus on driver engagement solidified its reputation as a technologically advanced and exciting vehicle. This comprehensive English-language service manual provides full repair coverage for the 1991 Mitsubishi 3000GT/GTO. It details all aspects of engine repair, including mechanical, fuel, ignition, and emissions systems, as well as transmission service for both manual and automatic variants. The manual also covers suspension, steering, brakes, and extensive electrical and electronic systems, complete with detailed wiring diagrams. Furthermore, it includes procedures for body and chassis repair, scheduled maintenance, troubleshooting, and diagnostics. This resource is designed to assist owners, mechanics, and technicians in maintaining, diagnosing, and repairing the vehicle to the highest standards, ensuring its continued performance and reliability. 🏷️ Basic Information Identification Make: Mitsubishi Model: 3000GT / GTO Year: 1991 👋 Introduction Market Position Positioning: The Mitsubishi 3000GT (GTO in Japan) was positioned as a premium, high-performance grand tourer, competing with established sports cars from Japan and Europe. Competitive Analysis Competitors: Competed with vehicles like the Nissan 300ZX (Z32), Toyota Supra (Mk3/Mk4), Mazda RX-7 (FC/FD), Porsche 944, and Chevrolet Corvette. Key Features Aerodynamics: Features advanced active aerodynamics, including an active front spoiler and adjustable rear wing (on specific trims), designed to optimize downforce at higher speeds. All Wheel Drive: Available with sophisticated all-wheel-drive (AWD) and all-wheel-steering (AWS) systems, enhancing handling and stability. Handling Technology: Incorporated advanced technologies like electronically controlled suspension (ECS) and active aerodynamics for superior on-road performance. 📋 Manual Details Coverage Areas Primary Coverage: Full Service Repair Page Count Estimated Page Count: Comprehensive (Specific count not provided, typical for full service manuals exceeds 500 pages) Manual Type Type: Full Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: All aspects of engine repair, rebuilding, and diagnostics, including: Engine mechanical, lubrication, cooling, fuel, ignition, emissions control, and engine electrical systems. Transmission: Repair and maintenance of both manual and automatic transmissions, including: Clutch, gearbox, torque converter, transmission control, and driveline components. Suspension Steering: Detailed procedures for suspension and steering system service, including: Springs, shock absorbers, control arms, power steering system, alignment specifications, and wheel bearings. Brakes: Comprehensive coverage of the braking system, including: Brake hydraulic system, ABS (Anti-lock Braking System), brake pads, rotors, calipers, parking brake, and bleeding procedures. Electrical Electronics: Extensive diagnostics and repair for the vehicle's electrical and electronic systems, including: Battery, charging system, starting system, lighting, instrument cluster, body electronics, comfort controls, and detailed wiring diagrams. Body Chassis: Repair and maintenance for body and chassis components, including: Exterior body panels, interior trim, doors, windows, locks, glass replacement, frame repair, and corrosion protection. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections, and lubrication procedures. Troubleshooting: Systematic diagnostic procedures and troubleshooting guides for common and complex issues. Repair Rebuild: Step-by-step instructions for component removal, installation, repair, and complete engine/transmission rebuilds. Diagnostics: Diagnostic charts, fault code explanations, and electrical testing procedures. Wiring Diagrams: Includes detailed wiring diagrams for all electrical systems, crucial for diagnosing electrical faults. Technical Depth Depth: Expert-level detail suitable for professional technicians and advanced DIY enthusiasts, covering everything from routine maintenance to complete vehicle restoration. Recalibration: Procedures for recalibrating sensors and electronic control units (ECUs) where applicable. 📊 Manual Specifications File Format File Format: PDF Print Quality Printability: Full Printable Binding Type Binding: Digital (PDF Download) Paper Type Media: Digital ⚙️ Engine Specifications Primary Engine Engine Code: 6G72 (DOHC V6) Configuration: 3.0L SOHC V6 (Base models) / 3.0L DOHC V6 Twin-Turbo (VR-4 and GTO Twin-Turbo) Displacement: 2972 cc (181.4 cubic inches) Performance Horsepower: Naturally Aspirated: Approx. 222 hp @ 6000 rpm; Twin-Turbo: Approx. 300 hp @ 6000 rpm (JDM GTO Twin-Turbo), 300 hp @ 6000 rpm (USDM 3000GT VR-4) Torque: Naturally Aspirated: Approx. 205 lb-ft @ 4000 rpm; Twin-Turbo: Approx. 307 lb-ft @ 3500 rpm (JDM GTO Twin-Turbo), 307 lb-ft @ 3000 rpm (USDM 3000GT VR-4) Fuel System Fuel Delivery: Multi-point fuel injection (MPI) Fuel Type: Unleaded gasoline Cooling System Cooling Method: Water-cooled 🔧 Transmission Standard Transmission Type Na: 5-speed manual (Naturally Aspirated models) Optional Transmission Type At: 4-speed automatic (Naturally Aspirated and VR-4 models) Transmission Type Turbo Manual: 5-speed manual (VR-4 Twin-Turbo models) Features AWD Aws: Active All-Wheel Drive (4WD) and All-Wheel Steering (AWS) systems available on VR-4...