🏷️ Basic Information

Make:

Mitsubishi

Model:

Eclipse

Production Years Covered:

1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998

Platform Codename:

D21A / D22A / D27A / D31A / D32A / D38A

👋 Introduction

Segment:

Compact Sports Coupe/Sedan

Key Selling Points:

Affordable performance, sporty styling, available AWD, practical for its class

Primary Competitors:

Honda Prelude, Toyota Celica, Nissan 240SX, Ford Probe

All Wheel Drive Availability:

Iconic feature, especially on turbocharged models, enhancing handling and traction

Turbocharged Engines:

High-performance 4G63T engine offered on GS-T and AWD models

Styling:

Sleek, aerodynamic design, distinct from many competitors of its era

📋 Manual Details

Markets Covered:

North America, Europe, Australia (specifics may vary by region)

Estimated Page Count:

~1000-1500+ pages (comprehensive service manual)

Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

1.8L SOHC (4G37), 2.0L DOHC (4G63), 2.0L Turbo DOHC (4G63T), 2.4L SOHC (4G64)

Fuel System:

Fuel injection (MPI), fuel pump, pressure regulator, injectors, emissions control

Ignition System:

Distributorless Ignition System (DIS), coil packs, spark plugs, timing

Cooling System:

Radiator, fan, thermostat, water pump, hoses, coolant specifications

Exhaust System:

Manifold, catalytic converter, muffler, pipes, O2 sensors

Transmission Manual:

5-speed manual (KM132, W5MG1), clutch, gear selection, driveline

Transmission Automatic:

4-speed automatic (F4A33, V4A51), torque converter, valve body, fluid specifications

Suspension Front:

MacPherson struts, control arms, bushings, springs, shock absorbers

Suspension Rear:

Multi-link independent suspension, trailing arms, control links, springs, shock absorbers

Steering:

Power steering pump, rack and pinion, tie rods, fluid specifications

Brakes Front:

Ventilated discs, calipers, pads, brake lines, ABS (if equipped)

Brakes Rear:

Solid discs (non-turbo) or ventilated discs (turbo), calipers, pads, parking brake

Electrical System:

Battery, alternator, starter, wiring diagrams, fuses, relays

Lighting System:

Headlights, taillights, interior lights, bulbs, circuits

HVAC System:

Air conditioning, heater core, blower motor, controls, refrigerant

Body Exterior:

Panels, doors, hood, trunk, bumpers, trim, glass, sunroof

Body Interior:

Seats, dashboard, door panels, headliner, carpets, trim

Restraint Systems:

Seat belts, airbags (if equipped), SRS system components

Diagnostics:

OBD-I (On-Board Diagnostics) codes, diagnostic trouble codes (DTCs), troubleshooting flowcharts

Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection/replacement, brake pad replacement

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting

Repair:

Engine component removal/installation (e.g., alternator, starter, water pump), transmission rebuild basics, suspension component replacement, brake caliper overhaul, exhaust system repair

Overhaul:

Engine internal component replacement (pistons, rings, bearings, gaskets), cylinder head service

Calibration:

Ignition timing adjustment, idle speed control adjustment

Installation:

Component replacement (e.g., radiator, brake rotors), accessory installation (e.g., stereo)

Depth:

Comprehensive: Covers basic maintenance, routine servicing, advanced diagnostics, component removal and installation, major repairs, and some internal engine/transmission work. Includes detailed specifications and diagrams.

Wiring Diagrams:

Detailed electrical wiring diagrams for all major systems

Torque Specifications:

Extensive list of torque specifications for critical fasteners

Clearances:

Engine component clearances (e.g., piston-to-wall, bearing clearances)

Diagnostic Flowcharts:

Systematic troubleshooting guides

📊 Manual Specifications

Digital Format:

PDF

Searchable Text:

Likely searchable text (depending on scan quality), allowing for quick information retrieval

Print Readability:

High-quality scans ensuring readability of text and diagrams

Digital Binding:

N/A (Digital download)

Digital Paper Simulation:

N/A (Digital download, but designed to be printable page by page)

⚙️ Engine Specifications

Base Engine:

2.0L DOHC Non-Turbo (4G63)

Engine 1 8L:

1.8L SOHC 16-valve (4G37), Approx. 103-116 hp

Engine 2 0L Na:

2.0L DOHC 16-valve (4G63), Approx. 135-150 hp

Engine 2 0L Turbo:

2.0L DOHC 16-valve Turbocharged (4G63T), Approx. 195-210 hp (varies by year/trim)

Engine 2 4L:

2.4L SOHC 16-valve (4G64), Approx. 140-156 hp (introduced later in production)

Turbo Boost Pressure:

Approx. 10-14 psi (factory)

Fuel Delivery:

Electronic Multi-Point Fuel Injection (MPI)

Recommended Fuel:

87 Octane (non-turbo), 91 Octane (turbo models)

🔧 Transmission

Standard Transmission:

5-speed manual

Optional Transmission:

4-speed automatic

All Wheel Drive System:

Available on specific trims (e.g., GST, GSX), often with viscous coupling center differential and Torsen rear differential (late models)

Clutch Type:

Hydraulically actuated, single dry plate

📐 Dimensions

Wheelbase:

Approx. 100.4 inches (2550 mm)

Length:

Approx. 175.2-177.8 inches (4450-4516 mm) depending on year/model

Width:

Approx. 69.1 inches (1755 mm)

Height:

Approx. 50.4-51.2 inches (1280-1300 mm)

Curb Weight:

Approx. 2800-3300 lbs (1270-1500 kg) depending on configuration

Gross Vehicle Weight Rating:

Approx. 3800-4200 lbs (1725-1905 kg)

🛡️ Safety Features

NHTSA Frontal Impact:

Likely 4-star rating (driver) and 4-star rating (passenger) for early models, check specific year reports.

Anti Lock Brakes ABS:

Optional on most models, standard on higher trims (GST/GSX) in later years

Airbags:

Driver and passenger airbags standard on most models from mid-90s onwards.

Seat Belts:

3-point front seat belts, 2-point rear lap belts (later models may have 3-point rear)

💡 Technology Features

Audio System:

Factory AM/FM/Cassette stereo, optional CD player on higher trims.

Climate Control:

Manual climate controls, optional automatic climate control on select models.

Cruise Control:

Optional on most models, standard on higher trims.

OBD Interface:

OBD-I diagnostic port (typically under the dash or in the engine bay).

🔧 Maintenance

Engine Oil Change:

Every 3,000-5,000 miles (4,800-8,000 km) or 3-6 months, whichever comes first.

Engine Air Filter:

Every 15,000-30,000 miles (24,000-48,000 km)

Spark Plugs:

Every 30,000-60,000 miles (48,000-96,000 km) depending on type (copper vs. platinum)

Timing Belt:

Crucial: Every 60,000-90,000 miles (96,000-145,000 km) for 4G63/4G63T engines. Failure can cause catastrophic engine damage.

Engine Oil:

API SG/SH or higher, SAE 5W-30 or 5W-40 (check owner's manual for specific viscosity based on temperature)

Transmission Fluid Manual:

API GL-3 or GL-4, SAE 75W-90 gear oil

Transmission Fluid Automatic:

Dexron II/III ATF (Automatic Transmission Fluid)

Power Steering Fluid:

DEXRON II or equivalent power steering fluid

Coolant:

Ethylene Glycol based coolant (50/50 mix with distilled water)

Turbo Model Oil Sludge:

Turbocharged 4G63T engines can be prone to oil sludge if maintenance is neglected, especially oil changes. Regular attention to oil is critical.

Suspension Bushings:

Wear and tear on rubber suspension bushings can lead to vague handling and noise.

Cv Axle Boots:

Torn CV axle boots can lead to premature wear of the constant velocity joints.

Window Regulators:

Power window regulators can fail over time.

Radiator Corrosion:

Older radiators can develop leaks due to corrosion.

📚 Vehicle History

Mitsubishi Performance:

Mitsubishi has a strong motorsport heritage, particularly with the Lancer Evolution, sharing engine technology with the Eclipse.

First Generation Styling:

Designed in collaboration with Chrysler (Diamond Star Motors - DSM), sharing platforms with Plymouth Laser and Eagle Talon.

Second Generation Redesign:

Significant redesign for 1995, more rounded styling, improved aerodynamics, and upgraded interior.

Performance Trims:

Introduction of potent GS-T (Turbocharged) and GSX (Turbocharged AWD) trims cemented its performance image.

Assembly Location:

Normal, Illinois, USA (DSM facility)

🏆 Awards & Recognition

Car And Driver 10Best:

The Mitsubishi Eclipse (especially turbocharged models) was frequently recognized by automotive publications like Car and Driver for its performance and value.

Performance Reviews:

Praised for its handling, especially with AWD, and powerful turbocharged engines.