🏷️ Basic Information Identification Make: Mitsubishi Model: Eclipse Generation: First Generation Years Covered: 1990, 1991, 1992, 1993, 1994 Codes Chassis Codes: D21A, D22A, D27A, D31A, D32A, D38A, D39A Platform: Chrysler JA/JSA Platform (shared with Plymouth Laser, Eagle Talon) 👋 Introduction Market Position Segment: Compact Sport Coupe/Convertible Target Audience: Enthusiasts, performance-oriented drivers, DIY mechanics Competitive Analysis Key Competitors: Toyota Celica, Honda Prelude, Nissan 240SX, Mazda MX-6, Ford Probe Key Features Design Philosophy: Stylish aerodynamic design, performance-oriented powertrains (especially the 4G63T), available AWD. Notable Trims: GSX (AWD Turbo), GST (FWD Turbo), GS (Naturally Aspirated), Base/DL (1.8L) 📋 Manual Details Coverage Areas Engine Coverage: 4G37 (1.8L SOHC), 4G63 (2.0L SOHC Non-Turbo), 4G63T (2.0L DOHC Turbocharged) Transmission Coverage: F5M21 (5-speed Manual), F4A22/F4A23 (4-speed Automatic), VCU (Viscous Coupling Unit) for AWD models Drivetrain Coverage: Front-Wheel Drive (FWD), All-Wheel Drive (AWD) Body Style Coverage: Coupe (GSX, GST, GS, Base/DL), Convertible (GS) Page Count Total Pages: 4378 Manual Type Type: Workshop Service Manual / Repair Manual Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, camshafts, timing belt/chain, lubrication system, cooling system, fuel delivery (EFI), emissions control. Engine Performance: Engine control system (ECU diagnostics), ignition system, turbocharger system (for 4G63T models), boost control. Transmission And Drivetrain: Manual transmission overhaul, automatic transmission operation and diagnosis, clutch system, driveshafts, CV joints, differential, transfer case (for AWD). Suspension And Steering: Front and rear suspension components, springs, shock absorbers, control arms, stabilizer bars, steering gear, power steering system, wheel alignment specifications. Brakes: Brake system components (master cylinder, calipers, rotors, drums, pads), ABS system (where applicable), brake fluid specifications, bleeding procedures, parking brake. Electrical System: Battery, charging system (alternator), starting system, lighting system, ignition system, instrument cluster, wiring diagrams, fuses, relays, body control modules. HVAC System: Heating, Ventilation, and Air Conditioning system components, refrigerant types, service procedures, troubleshooting. Body And Chassis: Body panels, doors, windows, interior trim, convertible top mechanism, structural components, corrosion protection. Fuel System: Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, fuel lines, evaporative emissions control (EVAP). Exhaust System: Exhaust manifold, catalytic converter, mufflers, pipes, oxygen sensors. Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug replacement, air filter replacement, coolant flushes, brake inspections, tire rotations. Diagnostic Procedures: Troubleshooting charts, symptom-based diagnostics, engine performance analysis, electrical system diagnosis, ABS fault finding. Repair Procedures: Component removal and installation, engine rebuilds, transmission overhauls, brake caliper replacement, suspension component replacement, electrical component repair. Adjustment Procedures: Idle speed adjustment, throttle cable adjustment, clutch pedal adjustment, ignition timing (if applicable). Special Tools: Identification and usage of special tools required for specific repair procedures. Technical Depth Depth Of Information: Comprehensive, covering basic maintenance to complete engine and transmission rebuilds. Includes detailed diagrams, specifications, and troubleshooting guides. Diagnostic Capabilities: Advanced diagnostic procedures for engine control units (ECUs), fuel injection systems, and electronic components. Wiring Diagrams: Detailed, system-specific wiring diagrams for all electrical components and circuits. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content Print Quality Print Readability: High-resolution scans suitable for printing Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine 1.8L: 4G37, 1.8L SOHC I4, 98 hp @ 5500 rpm, 105 lb-ft @ 3500 rpm Engine 2.0L Na: 4G63, 2.0L SOHC I4, 135 hp @ 6000 rpm, 125 lb-ft @ 4000 rpm (approx.) Engine 2.0L Turbo: 4G63T, 2.0L DOHC I4 Turbocharged, 195 hp @ 6000 rpm, 203 lb-ft @ 3000 rpm (approx. for AWD GSX) Engine 2.0L Turbo FWD: 4G63T, 2.0L DOHC I4 Turbocharged, 190 hp @ 6000 rpm, 195 lb-ft @ 3000 rpm (approx. for FWD GST) Performance Compression Ratio 4G63T: 8.5:1 Redline 4G63T: Approximately 6500-7000 RPM Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type Required: Unleaded gasoline (Octane rating varies by engine, premium for turbo models) 🔧 Transmission Standard Base Transmission: 5-speed Manual Transmission (F5M21) Optional Automatic Transmission: 4-speed Automatic Transmission (F4A22/F4A23) Features AWD System: Full-time 4-wheel drive with viscous coupling center differential (Active Four Wheel Drive on GSX models) Manual Gear Ratios F5M21: Detailed ratios available in manual for each model variant and year. Automatic Gear Ratios F4A22: Detailed ratios available in manual for each model variant and year. 📐 Dimensions Exterior Wheelbase: Approx. 98.8 inches (2510 mm) Length: Approx. 178.5 inches (4534 mm) Width: Approx. 68.9 inches (1750 mm) Height: Approx. 50.8 inches (1290 mm) Weights Curb Weight: Varies by model and trim (approx. 2700-3200 lbs / 1225-1450 kg) Gross Vehicle Weight Rating Gvwr: Detailed specifications available in manual. 🛡️ Safety Features Ratings NHTSA Ratings: Early 1990s vehicle, specific ratings for this generation may vary or not be consistently available across all model years in modern databases. Manual focuses on mechanical safety systems. Active Features ABS: Available on higher trims (e.g., GSX), standard on some late-model GST/GSX. Traction Control: Not...