🏷️ Basic Information Identification Make: Mitsubishi Model: GTO / 3000GT Year: 1991 Codes Chassis Code: Z16A (for AWD Twin Turbo) Engine Code: 6G72 (DOHC Twin Turbo V6) 👋 Introduction Market Position Positioning: High-performance Japanese sports car, often competing with European exotics. Competitive Analysis Competitors: Dodge Stealth (rebadged GTO), Nissan 300ZX, Toyota Supra, Mazda RX-7. Key Features Features: Advanced all-wheel drive (AWD) system, active aerodynamics (on Twin Turbo), electronically controlled suspension (ECS), powerful V6 engine. Manual Purpose Purpose: To provide comprehensive repair, maintenance, and diagnostic information for the 1991 Mitsubishi GTO/3000GT, mirroring factory service manuals. Manual Benefits Benefits: Enables DIY repairs, cost savings, detailed understanding of vehicle systems, supports restoration projects. 📋 Manual Details Coverage Areas Primary Coverage: Complete repair and service for all 1991 Mitsubishi GTO/3000GT models and engines. Included Models: All models and engine variants of the 1991 Mitsubishi GTO/3000GT. Page Count Total Pages: Over 3000 pages Manual Type Type: Service Repair Manual / Workshop Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine: Engine overhaul and rebuilding, engine performance tuning, firing orders, serpentine belt routings with diagrams, timing belt service procedures. Brakes: Brake system diagnostics, repair procedures, and specifications. Suspension Steering: Front-end alignment procedures and specifications, suspension system service, U-joint and CV-joint service procedures. Electrical Electronics: Complete wiring diagrams, computer diagnostic trouble tree charts, computer diagnostic codes. Powertrain: Transmission removal and installation, in-car transmission servicing. Body Chassis: Sunroof service. HVAC: Air conditioning service and capacities. Procedures Included Maintenance: Factory maintenance schedules and charts, general repair procedures, driving concerns. Troubleshooting: Trouble codes, troubleshooting and diagnostics, computer diagnostic trouble tree charts. Rebuilding: Engine overhaul and rebuilding. Technical Depth Depth: Comprehensive, covering every detail for professional technicians and DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Compatibility: All versions of Windows & Mac Requirements: Adobe PDF Reader Print Quality Printability: All pages are printable Zoom Capability: Allows zooming for detailed parts viewing Binding Type Binding: Digital (PDF download) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: 6G7 Series V6 Displacement: 3.0 Liters (2972 cc) Configuration: 60-degree V6 Aspiration: Naturally Aspirated and Twin-Turbocharged Performance Horsepower Na: Approx. 220 hp @ 6000 rpm (Varies by market/specific model) Torque Na: Approx. 200 lb-ft @ 4500 rpm (Varies by market/specific model) Horsepower Tt: Approx. 300 hp @ 6000 rpm (Varies by market/specific model) Torque Tt: Approx. 300 lb-ft @ 3500 rpm (Varies by market/specific model) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (Premium Recommended/Required) Ignition Ignition System: Distributorless Ignition System (DIS) or Distributor-based Ignition (depending on specific market/model variation). Timing Timing Belt Type: Belt-driven dual overhead camshafts (DOHC) 🔧 Transmission Standard Transmission Type Na: 5-speed Manual Optional Transmission Type Tt: 4-speed Automatic with Sportronic Features AWD System: Available All-Wheel Drive (AWD) with viscous coupling center differential on Twin Turbo models. Fluid Specifications Manual Transmission Fluid: API GL-4 or GL-5 Gear Oil, SAE 75W-90 (Consult manual for exact specifications) Automatic Transmission Fluid: Mopar ATF+3 (or equivalent Dexron III/Mercon compatible fluid, consult manual for exact specifications) 📐 Dimensions Exterior Length: Approx. 4,690 mm (184.6 in) Width: Approx. 1,835 mm (72.2 in) Height: Approx. 1,295 mm (51.0 in) Wheelbase: Approx. 2,450 mm (96.5 in) Weights Curb Weight Na: Approx. 1,510 kg (3,329 lbs) (Varies by model) Curb Weight Tt: Approx. 1,660 kg (3,660 lbs) (Varies by model) 🛡️ Safety Features Ratings Safety Ratings: No comprehensive NHTSA/IIHS ratings readily available for the 1991 model year in a readily digestible format. However, it was designed as a premium sports coupe. Active Features Active Safety: ABS (Anti-lock Braking System) often standard on higher trims/Twin Turbo models. Passive Features Passive Safety: Driver and passenger airbags (may be optional on some early models), reinforced passenger cell, crumple zones. 💡 Technology Features Infotainment Audio System: Factory premium audio systems often included cassette tape players and radio, with options for CD changers on some models. Speaker configurations varied. Driver Assistance Active Aero: Active Aerodynamic System (variable front lip spoiler and rear wing) on Twin Turbo models. Ecs: Electronic Controlled Suspension (ECS) offering adjustable damping modes. Connectivity Connectivity Features: Limited by era; primarily focused on vehicle operation rather than external connectivity. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 3-6 months (synthetic oil may extend this interval; consult manual). Timing Belt Replacement Interval: 60,000 miles or 5 years (critical component; failure can cause severe engine damage). Coolant Flush Interval: Every 2-3 years or 30,000 miles. Fluid Specifications Engine Oil Spec: SAE 10W-30 or 10W-40 API SG or higher (consult manual for precise specification and viscosity based on climate). Coolant Type: Ethylene glycol-based antifreeze (e.g., Mitsubishi DiaQueen Super Long Life Coolant or equivalent). Brake Fluid Type: DOT 3 or DOT 4 brake fluid. Known Issues Common Problems: Timing belt tensioner failure, ECS system issues, alternator problems, catalytic...