🏷️ Basic Information

Make:

Mitsubishi

Model:

Eclipse

Product Type:

Workshop Service Repair Manual

Chassis Codes Covered:

D22A, D27A, D32A, D38A, D31A

Platform:

Mitsubishi 4G63/4G64 platform (co-developed with DSM)

👋 Introduction

Market Position:

The Mitsubishi Eclipse of this era was a popular compact sports coupe and convertible, known for its performance (especially the turbocharged models) and sporty styling, targeting a younger demographic and enthusiasts.

Competitors:

Competed directly with vehicles like the Toyota Celica, Honda Prelude, Nissan 240SX, Ford Probe, and Dodge Stealth (which shared a platform).

Key Features:

Available All-Wheel Drive, turbocharged performance options (4G63 engine), distinctive styling, customizable nature

Target Audience:

Professional automotive technicians, DIY mechanics, and owners seeking in-depth knowledge for maintenance and repair.

📋 Manual Details

Engine Variants Covered:

2.0L 4G63 SOHC, 2.0L 4G63 DOHC Turbo, 2.4L 4G64 SOHC

Drivetrain Variants Covered:

Front-Wheel Drive (FWD), All-Wheel Drive (AWD)

Trim Levels Covered:

GS, GST, GSX, RS, SP, LS (Note: Coverage may vary slightly by specific sub-model within these generations)

Estimated Page Count:

1000+

Manual Type:

Comprehensive Workshop Service Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, pistons, crankshaft, camshafts, timing components, lubrication system, cooling system

Engine Management:

Fuel injection, ignition system, sensors, ECM/ECU diagnosis, emissions control

Transmission Manual:

Clutch system, gearbox assembly, shift linkage, gears, bearings, seals

Transmission Automatic:

Torque converter, planetary gear sets, valve body, hydraulic control, transmission control module (TCM)

Drivetrain AWD:

Transfer case, center differential, rear differential, driveshafts, CV joints

Suspension:

Front suspension (MacPherson struts, control arms), Rear suspension (multi-link), springs, shock absorbers, sway bars

Steering:

Power steering system, steering rack/gearbox, steering column, tie rods

Brakes:

Front and rear brake systems (disc brakes), ABS (Anti-lock Braking System), brake calipers, rotors, master cylinder, brake lines

Electrical System:

Battery, charging system, starter, lighting, wipers, horn, power windows, mirrors, locks

Body And Chassis:

Body panel removal/installation, interior trim, glass, doors, hood, trunk, frame repair principles

Climate Control:

HVAC system, A/C compressor, evaporator, condenser, heater core, controls

Diagnostics Troubleshooting:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting charts, wiring diagrams

Scheduled Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tune-ups, belt replacements

Engine Repair:

Engine rebuild procedures, head gasket replacement, timing belt replacement, turbocharger service (for turbo models)

Transmission Repair:

Transmission fluid and filter changes, clutch replacement, rebuild procedures for both manual and automatic transmissions

Suspension And Steering Repair:

Component replacement (shocks, struts, ball joints, tie rods), alignment specifications

Brake System Repair:

Brake pad and rotor replacement, caliper overhaul, bleeding procedures, ABS system diagnostics and repair

Electrical Troubleshooting:

Wiring diagrams interpretation, component testing, fuse and relay identification, diagnostic procedures for common electrical faults

Bodywork And Interior:

Body panel alignment, door and window regulator repair, interior trim component removal and installation

HVAC Service:

Refrigerant handling (with appropriate EPA certification disclaimer), component replacement, system leak testing

Technical Depth:

Covers everything from basic maintenance and fluid changes to complex engine and transmission rebuilds, including electrical diagnostics and troubleshooting

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution scans suitable for printing

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Searchability:

Text-searchable PDF for quick access to information

⚙️ Engine Specifications

Engine Code:

4G63 (SOHC)

Displacement:

1997 cc (2.0 L)

Configuration:

Inline 4-cylinder

Valvetrain:

SOHC, 16 valves

Bore X Stroke:

85.0 mm x 88.0 mm

Compression Ratio:

8.5:1 to 9.5:1 (depending on model year and specific variant)

Horsepower Estimated:

135-145 hp @ 6000 rpm

Torque Estimated:

135-140 lb-ft @ 4500 rpm

Engine Code:

4G63T (DOHC Turbo)

Displacement:

1997 cc (2.0 L)

Configuration:

Inline 4-cylinder

Valvetrain:

DOHC, 16 valves

Bore X Stroke:

85.0 mm x 88.0 mm

Compression Ratio:

8.5:1

Horsepower Estimated:

205-210 hp @ 6000 rpm

Torque Estimated:

203 lb-ft @ 3000 rpm

Engine Code:

4G64 (SOHC)

Displacement:

2351 cc (2.4 L)

Configuration:

Inline 4-cylinder

Valvetrain:

SOHC, 16 valves

Bore X Stroke:

86.5 mm x 100.0 mm

Compression Ratio:

9.0:1

Horsepower Estimated:

140-150 hp @ 5500-6000 rpm

Torque Estimated:

150-155 lb-ft @ 4000 rpm

Fuel System Type:

Electronic Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 octane for NA, 91 octane recommended for Turbo)

Ignition System:

Distributorless Ignition System (DIS) with coil packs on later models, Distributor ignition on earlier models

🔧 Transmission

Type:

5-speed Manual Transaxle

Clutch:

Hydraulically actuated single dry plate clutch

Type:

4-speed Automatic Transaxle (F4A22, F4A23, V4A51 on AWD models)

Features:

Electronically controlled with lock-up torque converter

Type:

Active All-Wheel Drive (AWD) system with viscous coupling center differential

Front Differential:

Integrated into transaxle, open differential

Rear Differential:

Open differential with optional limited-slip differential (LSD) on GSX models

Manual Transmission Fluid:

API GL-4 or GL-5 gear oil, SAE 75W-90 (Check manual for specific viscosity and API rating)

Automatic Transmission Fluid:

Dexron III or equivalent (Check manual for specific ATF type and capacity)

Transfer Case Fluid AWD:

API GL-4 gear oil, SAE 75W-90 (Check manual for specific viscosity and API rating)

Rear Differential Fluid AWD:

API GL-5 gear oil, SAE 80W-90 (Check manual for specific viscosity and API rating)

📐 Dimensions

Length:

Approx. 178.0 - 180.0 inches (4521 - 4572 mm)

Width:

Approx. 69.1 inches (1755 mm)

Height:

Approx. 50.0 - 51.0 inches (1270 - 1295 mm)

Wheelbase:

Approx. 98.2 inches (2494 mm)

Passenger Volume:

Approx. 85 cu ft (2.4 cubic meters)

Cargo Volume Rear Seats Up:

Approx. 7.6 cu ft (0.21 cubic meters)

Cargo Volume Rear Seats Down:

Approx. 22.0 cu ft (0.62 cubic meters) (convertible models have less)

Curb Weight Approx:

2700 - 3200 lbs (1225 - 1450 kg) (depending on engine and drivetrain)

Gross Vehicle Weight Rating Gvwr Approx:

3700 - 4000 lbs (1680 - 1815 kg)

🛡️ Safety Features

NHTSA Driver Front Impact:

4-star (driver) and 4-star (passenger) in 1990s testing (specific ratings may vary by year and testing methodology)

IIHS Side Impact:

Likely marginal to poor in early testing protocols, improved in later years.

Antilock Braking System ABS:

Optional on most models, standard on GSX and GST Turbo models

Traction Control TCS:

Optional on later models, particularly AWD variants.

Airbags:

Driver and passenger airbags standard from mid-generation refresh (around 1995), optional or unavailable on early models.

Seatbelts:

Three-point inertia-reel seatbelts, driver's side pretensioner

Rollover Protection:

Integral to convertible models, with reinforced A-pillars.

💡 Technology Features

Audio System:

Factory-installed AM/FM cassette stereo with optional CD player. Later models might have upgraded systems or aftermarket units.

Climate Controls:

Manual or automatic climate control depending on trim level.

Cruise Control:

Standard on most higher trim levels, optional on base models.

Anti Lock Braking System ABS:

As mentioned in safety, provides braking assistance.

Connectivity Features:

No integrated Bluetooth or USB connectivity from the factory. Aftermarket head units are common for modern connectivity.

🔧 Maintenance

Engine Oil And Filter Change:

Every 3,750 to 7,500 miles or 3 to 6 months, depending on oil type and driving conditions (refer to manual for specific recommendation).

Engine Air Filter Replacement:

Every 15,000 to 30,000 miles or 1 to 2 years.

Cabin Air Filter Replacement:

Not standard on all models, but recommended every 15,000 miles if equipped.

Spark Plug Replacement:

Every 30,000 to 60,000 miles, depending on spark plug type (copper, platinum, iridium).

Timing Belt Replacement:

Critical for 4G63/4G64 engines. Recommended every 60,000 to 90,000 miles or 5-7 years. Failure leads to catastrophic engine damage.

Coolant Flush And Replacement:

Every 30,000 to 60,000 miles or 2-3 years.

Transmission Fluid Change:

Manual: Every 30,000-60,000 miles. Automatic: Every 30,000-50,000 miles (fluid and filter).

Engine Oil:

API SG, SH, or higher; SAE 5W-30 or 10W-30 recommended (consult manual for specific year/engine).

Coolant:

Ethylene Glycol-based coolant, typically a 50/50 mix with distilled water. Use a quality Asian vehicle specific coolant or equivalent.

Brake Fluid:

DOT 3 or DOT 4 compatible (check manual).

Power Steering Fluid:

ATF (Automatic Transmission Fluid) Dexron II/III or equivalent.

Timing Belt Failure:

Premature wear or failure can cause severe engine damage (interference engine).

Turbocharger Issues:

Oil leaks, bearing failure, seized actuators on turbo models due to age and lack of maintenance.

Clutch Wear:

Can wear out prematurely with aggressive driving or high mileage.

Power Window Motors:

Failure of window regulator and motor mechanisms is common.

Catalytic Converter:

Can become clogged or fail over time, especially with carbon buildup from poor maintenance.

Cv Axle Boots:

Tearing of CV axle boots can lead to joint failure.

Suspension Component Wear:

Bushings, ball joints, and tie rod ends can wear out, leading to poor handling and alignment issues.

Fuel Pump:

Can fail over time, leading to starting issues or stalling.

📚 Vehicle History

Brand Heritage:

Mitsubishi, a Japanese automotive manufacturer with a long history, known for technological innovation and durable vehicles. The Eclipse was a significant model for expanding its market presence in North America.

First Generation Years:

1990-1994

First Generation Design:

Designed by Mitsubishi and produced in the Diamond-Star Motors (DSM) plant in Normal, Illinois, USA. Offered in coupe and convertible body styles.

First Generation Engines:

1.8L 4G37, 2.0L 4G63 (SOHC and DOHC Turbo), 2.0L 6G71 V6 (in some export markets and Dodge Stealth).

Second Generation Years:

1995-1999

Second Generation Design:

More rounded and aerodynamic styling. Continued production at the DSM plant. Offered coupe and convertible body styles.

Second Generation Engines:

2.0L 4G63 (SOHC), 2.0L 4G63 DOHC Turbo, 2.4L 4G64 SOHC. The V6 was dropped for the Eclipse in the US market, replaced by the Eclipse GT with the 3.0L 6G72 V6.

Manufacturing Location:

Normal, Illinois, USA (Diamond-Star Motors - DSM)

Production Period:

1990-1999

🏆 Awards & Recognition

Car And Driver 10 Best:

The turbocharged GSX model was named to Car and Driver's 10 Best list for 1992 and 1993, highlighting its performance and value.

Motor Trend Car Of The Year:

While not a winner, the Eclipse was a strong contender in its segment and received positive reviews from automotive publications.

Sport Compact Car Magazine:

Frequently featured and praised in sport compact car magazines for its aftermarket potential and performance capabilities.