🏷️ Basic Information Identification Make: Mitsubishi Model: Eclipse Year: 1990 Codes Chassis Code: D22A/D27A (North American GS/GS-X) 👋 Introduction Market Position Historical Context: The 1990 Mitsubishi Eclipse represented a significant entry into the sporty compact coupe market, directly competing with models like the Honda Prelude, Toyota Celica, and Nissan 240SX. It was part of Mitsubishi's strategy to offer performance-oriented vehicles with distinctive styling. Competitive Analysis Key Competitors: Honda Prelude, Toyota Celica, Nissan 240SX, Ford Probe, Mazda MX-6. Key Features Vehicle Highlights: Available with front-wheel drive (FWD) or optional all-wheel drive (AWD) on higher trims, independent front and rear suspension, and a choice of naturally aspirated or turbocharged engines. The chassis was a collaborative effort with Chrysler (as the Plymouth Laser and Eagle Talon). 📋 Manual Details Coverage Areas Covered Sections: Engine Mechanical, Engine Electrical, Fuel System, Cooling System, Exhaust System, Lubrication System, Transmission (Manual & Automatic), Drivetrain, Suspension (Front & Rear), Steering, Brakes (Front & Rear), Body Electrical, Body Panel Repair, HVAC, Interior Components, Exterior Components, Wiring Diagrams, Diagnostic Procedures, Troubleshooting Guides Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Manual (Software) Scope: Comprehensive repair and service manual, covering all aspects of maintenance, diagnosis, and repair for the specified model year and variants. Language Language: English Format Format: Digital Software (likely searchable PDF or proprietary software) 📖 Manual Coverage Systems Covered Mechanical: Comprehensive coverage of all major mechanical systems including engine teardown, assembly, valve timing, fuel injection, ignition, exhaust, cooling, and lubrication. Electrical: Detailed engine electrical, body electrical, lighting, power accessories, and complete wiring diagrams for all circuits. Drivetrain: In-depth information on manual and automatic transmissions, clutch systems, differentials, axles, and driveshafts. Body And Trim: Covers removal and installation of interior trim panels, exterior body panels, bumpers, lighting, and glass. Procedures Included Maintenance: Scheduled maintenance, fluid changes (oil, coolant, transmission fluid, brake fluid), filter replacements, and general upkeep procedures. Repair: Step-by-step repair instructions for engine components, transmission overhaul, brake system repair, suspension and steering component replacement, and bodywork. Diagnostics: Troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (if applicable for the era), and specific test procedures for various systems. Engine Rebuild: Procedures for complete engine disassembly, inspection, machining recommendations, and reassembly with detailed specifications. Alignment: Specifications and procedures for front and rear wheel alignment. Technical Depth Depth: Factory-level technical depth, suitable for professional technicians and advanced DIY mechanics. Includes torque specifications, component clearances, diagnostic data, and detailed exploded views. Diagnostic Charts: Includes detailed diagnostic flowcharts and troubleshooting trees to systematically identify and resolve issues. Component Specifications: Provides precise measurements for bearing clearances, piston ring gap, valve seat runout, and other critical engine and chassis components. Wiring Diagrams Detail: Extremely detailed, often color-coded wiring diagrams illustrating every circuit and component connection. 📊 Manual Specifications File Format Digital Features: Likely includes search functionality, hyperlinked sections, zoomable diagrams, and printable pages. Print Quality Diagram Clarity: High-resolution diagrams and illustrations ensuring clarity for component identification and assembly. Binding Type Binding: N/A (Software) Paper Type Paper Quality: N/A (Software) ⚙️ Engine Specifications Primary Engine Engine Code: 4G63 (for turbocharged models) Displacement: 2.0 Liters (1997cc) Configuration: Inline 4-cylinder, DOHC, 16-valve (4G63T - Turbocharged) Performance Horsepower Turbo: 195 hp @ 6000 rpm (approx.) Torque Turbo: 203 lb-ft @ 3500 rpm (approx.) Turbocharger System: Mitsubishi TD05H-14B turbocharger with intercooler on GS-X model. Fuel System Induction: Multi-point Electronic Fuel Injection (MPI) with Turbocharger (for GS-X) Fuel Type: Unleaded Premium (91 Octane Recommended for Turbo) Engine Code Engine Code Naturally Aspirated: 4G63 (for non-turbo models) Displacement Naturally Aspirated Displacement Na: 2.0 Liters (1997cc) Configuration Naturally Aspirated Configuration Na: Inline 4-cylinder, SOHC, 8-valve (for base models) or DOHC, 16-valve (for GS) Performance Naturally Aspirated Horsepower Na: 135 hp @ 6000 rpm (approx. SOHC) / 140 hp @ 6000 rpm (approx. DOHC) Torque Na: 122 lb-ft @ 3000 rpm (approx. SOHC) / 125 lb-ft @ 4000 rpm (approx. DOHC) 🔧 Transmission Standard Transmission Type Base: 5-Speed Manual Optional Transmission Type Optional: 4-Speed Automatic (with lock-up torque converter) Features AWD Availability: Available on GS-X model (Viscous coupling center differential). 📐 Dimensions Exterior Wheelbase: 100.4 inches (2550 mm) Length: 171.7 inches (4361 mm) Width: 67.7 inches (1720 mm) Height: 50.8 inches (1290 mm) Weights Curb Weight Base: Approx. 2700 lbs (1225 kg) Curb Weight AWD Turbo: Approx. 3000 lbs (1360 kg) 🛡️ Safety Features Ratings NHTSA Fivestar Rating 1990: Not readily available for this model year, as testing standards differed significantly. However, contemporary vehicles of this class generally received moderate ratings. Active Features ABS: Optional on some models, standard on GS-X. Passive Features Airbags: Driver-side airbag optional, not standard. Seatbelts: Three-point front seat belts, height-adjustable. 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo cassette player with optional CD player. Basic speaker configurations. Driver Assistance Cruise Control: Optional on select trims. Connectivity Early Diagnostics: On-board diagnostics (OBD) were nascent, relying primarily on basic...