🏷️ Basic Information Identification Make: Mitsubishi Model: Eclipse Year: 1991 Codes Chassis Code: D22A (coupe), D27A (spyder) Platform: Mitsubishi E platform (also shared with Eagle Talon and Plymouth Laser) 👋 Introduction Market Position Segment: Compact sports coupe/convertible Target Audience: Enthusiasts, DIY mechanics, professional automotive technicians. Competitive Analysis Competitors: Mazda MX-6, Toyota Celica, Honda Prelude, Nissan 240SX, Ford Probe. Key Features Design Philosophy: Aerodynamic styling, front-engine, front-wheel drive (or optional all-wheel drive), sporty handling. Unique Selling Points: Available turbocharged engines, optional AWD, distinctive styling, aggressive performance for its class. 📋 Manual Details Coverage Areas Coverage: Complete service and repair information for the 1991 Mitsubishi Eclipse. Page Count Page Count: Estimated 1000+ pages (typical for factory service manuals of this era). Manual Type Manual Type: Factory Service Manual / Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical (dismantling, assembly, inspection), engine management systems (EFI, ignition), emissions control systems, cooling system, lubrication system, fuel system. Transmission Systems: Manual transmission (F5M33, F5M23), automatic transmission (A543), clutch system, transfer case (for AWD models). Drivetrain Systems: Front-wheel drive (FWD), All-wheel drive (AWD) system, differentials, driveshafts, axles. Suspension And Steering: Front suspension (MacPherson struts), rear suspension (independent multi-link), power steering system, steering column. Brake Systems: Front disc brakes, rear drum/disc brakes (depending on trim), anti-lock braking system (ABS) for equipped models, parking brake. Electrical Systems: 12V electrical system, battery, charging system (alternator), starting system, lighting system, instrumentation, power windows, power door locks, audio system wiring, fuse box and relay locations. HVAC Systems: Heating, ventilation, and air conditioning (HVAC) system operation, diagnosis, and repair. Body And Interior: Body panel removal and installation, interior trim, door mechanisms, hood, trunk, glass replacement. Procedures Included Maintenance Procedures: Routine maintenance (oil changes, filter replacements, tune-ups), spark plug replacement, belt inspection and replacement, fluid checks and changes. Repair Procedures: Engine overhaul, transmission repair, brake caliper and rotor replacement, suspension component replacement, electrical component diagnosis and repair, fuel injector service. Troubleshooting Guides: Diagnostic flowcharts for common drivability issues, electrical faults, and mechanical problems. Special Tools: Identification of specific tools required for certain repair procedures. Technical Depth Depth: Comprehensive, covering basic maintenance to complex engine and transmission overhauls. Includes detailed diagrams, specifications, and diagnostic procedures. 📊 Manual Specifications File Format File Format: Searchable PDF Print Quality Print Quality: High-resolution scans, suitable for printing individual pages or the entire manual. Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine 1 Code: 4G63 (DOHC) Engine 1 Type: 2.0L Inline-4 Turbocharged Engine 1 Displacement: 1997 cc Engine 1 Horsepower: 195 hp @ 6000 rpm Engine 1 Torque: 203 lb-ft @ 3500 rpm Engine 1 Compression Ratio: 8.5:1 Secondary Engine Engine 2 Code: 4G63 (SOHC) Engine 2 Type: 2.0L Inline-4 Naturally Aspirated Engine 2 Displacement: 1997 cc Engine 2 Horsepower: 135 hp @ 6000 rpm Engine 2 Torque: 137 lb-ft @ 3000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded gasoline Engine Management Ignition System: Electronic ignition with distributor 🔧 Transmission Standard Transmission Type Base: 5-speed manual Optional Transmission Type Optional: 4-speed automatic Features AWD Availability: Available on turbocharged models with 5-speed manual transmission. Fluid Specifications Manual Transmission Fluid: API GL-4, SAE 75W-90 or 75W-85 (check specific manual for exact fill). Automatic Transmission Fluid: Mitsubishi DiaQueen J3 or equivalent ATF SP-II (check specific manual for exact fill). 📐 Dimensions Exterior Length: Approx. 172.2 inches (4374 mm) Width: Approx. 69.1 inches (1755 mm) Height: Approx. 50.0 inches (1270 mm) Wheelbase: Approx. 98.7 inches (2507 mm) Weights Curb Weight: Approx. 2800 - 3100 lbs (1270 - 1406 kg), varies by trim and drivetrain. Wheels And Tires Wheel Size Base: 16 inch alloy wheels Tire Size Base: 205/55R16 Bolt Pattern: 5x114.3 mm (5x4.5 inches) 🛡️ Safety Features Ratings NHTSA Ratings: N/A (Crash testing protocols and reporting were different in 1991; specific NHTSA ratings not readily available for this model year.) Active Features Braking: Optional Anti-lock Braking System (ABS) on some models. Passive Features Airbags: Driver-side airbag standard on most models. Seatbelts: Three-point seatbelts with pretensioners. Body Structure: Reinforced safety cage construction. 💡 Technology Features Infotainment Audio System: Factory AM/FM cassette player with optional CD changer. Basic speaker system. Driver Assistance Cruise Control: Available as an option on most trims. Connectivity Antenna: Power antenna on higher trims. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles (6,000 km) or 3 months, whichever comes first (using API SG or equivalent). Engine Air Filter Replacement: Every 15,000 miles (24,000 km) or 12 months. Spark Plug Replacement: Every 30,000 miles (48,000 km) for standard plugs; platinum plugs may have longer intervals (check specific engine). Recommended plug: NGK BKR6E-11 (for turbo) or BKR5E-11 (for NA). Timing Belt Replacement: Every 60,000 miles (96,000 km) or 5 years for the 4G63 engine. This...