🏷️ Basic Information

Make:

Mitsubishi

Model:

Eclipse

Model Years Covered:

2003, 2004, 2005

Generation Code:

Third Generation (2000-2005)

👋 Introduction

Market Position:

The Mitsubishi Eclipse of this era was positioned as an affordable, stylish, and sporty coupe and convertible, offering a compelling alternative in the compact sports car segment.

Competitive Analysis:

Competed against vehicles such as the Toyota Celica, Honda Civic Si, Ford Focus SVT, Nissan Sentra SE-R, and Chevrolet Cavalier Z24.

Key Features:

Distinctive styling, available powerful V6 engine, optional all-wheel drive (on some earlier generations, not specified for these years but notable for the model line), engaging driving dynamics for its class.

Target Audience:

Enthusiasts seeking to maintain, repair, or customize their Mitsubishi Eclipse, DIY mechanics, and professional automotive repair shops.

📋 Manual Details

Trim Levels Covered:

All available trim levels for the specified model years, including GS, GT, GTS, and potentially Spyder convertible variants.

Engine Variants Covered:

2.4L SOHC I4 (4G64), 3.0L SOHC V6 (6G72, Mitsubishi 6G72 V6 engine).

Estimated Page Count:

Over 1500 pages (typical for a comprehensive full service repair manual covering multiple years and engines).

Manual Type:

Full Service and Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system, timing belt/chain, engine diagnostics.

Engine Electrical:

Ignition system, fuel injection system (EFI), emissions control system, starter system, charging system, engine control unit (ECU) wiring diagrams.

Transmission Manual:

Manual transmission removal, disassembly, inspection, assembly, adjustment, clutch system.

Transmission Automatic:

Automatic transmission removal, disassembly, inspection, assembly, adjustment, hydraulic control system, torque converter, transmission fluid.

Drivetrain:

Front-wheel drive (FWD) system, drive shafts, CV joints, differentials.

Suspension:

Front and rear suspension systems, struts, shocks, springs, control arms, bushings, alignment procedures.

Steering:

Power steering system, steering rack, steering column, tie rod ends, steering angle sensor.

Brakes:

Front and rear brakes (disc brakes), brake calipers, brake pads, brake rotors, brake lines, ABS system, parking brake.

Electrical System:

Battery, charging system, starting system, lighting system, wipers, horn, power windows, power locks, central locking, body control module (BCM).

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system, AC compressor, refrigerant, blower motor, climate control unit.

Body And Interior:

Exterior panels, doors, hood, trunk, bumpers, interior trim, seats, dashboard, headliner.

Fuel System:

Fuel tank, fuel pump, fuel filter, fuel injectors, fuel lines, evaporative emission control (EVAP) system.

Exhaust System:

Exhaust manifold, catalytic converter, muffler, exhaust pipes, oxygen sensors.

Safety Systems:

Airbag system, seat belt pre-tensioners, ABS diagnostics.

Routine Maintenance:

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

Troubleshooting:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, electrical system diagnostics.

Repair Procedures:

Step-by-step repair instructions for all major components and systems.

Rebuild Procedures:

Detailed instructions for engine and transmission rebuilds.

Component Replacement:

Instructions for replacing parts such as alternators, starters, radiators, brake components, sensors, etc.

Wheel Alignment:

Specifications and procedures for front and rear wheel alignment.

Diagnostic Tools:

Information on using OBD-II scanners and other diagnostic equipment.

Technical Depth:

Comprehensive coverage from basic DIY maintenance to complex diagnostic and repair procedures, suitable for both amateur enthusiasts and professional mechanics.

📊 Manual Specifications

File Format:

PDF

Print Quality:

High-resolution, allowing for clear printing of diagrams, schematics, and text.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Searchability:

Fully searchable text for quick access to specific information.

Navigation:

Includes internal bookmarks and hyperlinks for easy navigation between sections and topics.

⚙️ Engine Specifications

Engine 2.4L I4:

2.4L SOHC 16-valve Inline-4 (4G64). Power: approx. 147 hp @ 5700 rpm. Torque: approx. 158 lb-ft @ 4500 rpm.

Engine 3.0L V6:

3.0L SOHC 24-valve V6 (6G72). Power: approx. 200-210 hp @ 5700-6000 rpm. Torque: approx. 205-207 lb-ft @ 4500-4700 rpm.

Acceleration 0-60 Mph:

Varies by engine and transmission; generally in the 7-9 second range for V6 models.

Fuel System Type:

Multi-point Electronic Fuel Injection (MPI/EFI)

Fuel Octane Rating:

87 Octane (Regular Unleaded) for 2.4L; 87 Octane (Regular Unleaded) recommended for 3.0L V6, though premium may offer slight performance benefits.

Emission Controls:

Catalytic converter, oxygen sensors (O2 sensors), Evaporative Emission Control (EVAP) system, EGR (Exhaust Gas Recirculation).

🔧 Transmission

Transmission 2.4L:

5-speed manual transmission

Transmission V6:

4-speed automatic transmission with electronically controlled overdrive.

Automatic Transmission Features:

Adaptive shift control (on some models), torque converter lock-up.

Automatic Transmission Fluid:

Refer to owner's manual or manual for specific ATF type (likely ATF SP-III or equivalent).

Manual Transmission Fluid:

Refer to owner's manual or manual for specific MTF type (likely API GL-4 or GL-5 gear oil).

📐 Dimensions

Length:

Approx. 175.7 inches (Coupe) / 176.6 inches (Spyder)

Width:

Approx. 69.7 inches

Height:

Approx. 51.6 inches (Coupe) / 52.4 inches (Spyder)

Wheelbase:

Approx. 101.4 inches

Curb Weight:

Approx. 3000-3300 lbs (varies by engine and trim)

Gross Vehicle Weight Rating:

Refer to vehicle specific documentation or VIN plate.

Cargo Volume:

Approx. 10.9 cu ft (Coupe)

Wheel Bolt Pattern:

5x114.3 mm (5x4.5 inches)

Tire Sizes:

Commonly P215/60R16, P225/50R17, P235/45R17 depending on trim and options.

🛡️ Safety Features

NHTSA Front Impact Rating:

4 Stars (Driver), 4 Stars (Passenger) for 2003 model year.

IIHS Crash Test Rating:

Good (Frontal Offset) for 2003 model year.

Active Safety Features:

Anti-lock Braking System (ABS), Traction Control (on some V6 models).

Passive Safety Features:

Dual front airbags, front side-impact airbags (on some models), three-point seat belts with pretensioners, crumple zones.

Airbag System Components:

Frontal airbags, side curtain airbags (if equipped), seat-mounted side airbags (if equipped), Occupant Classification System (OCS).

💡 Technology Features

Infotainment Features:

Factory AM/FM stereo with CD player, optional premium audio system (e.g., Rockford Fosgate), cassette player may be present on some base models.

Driver Assistance Features:

ABS, Traction Control (optional).

Connectivity Features:

Limited by era; typically power windows, power locks, remote keyless entry (optional).

Instrument Cluster:

Analog gauges for speedometer, tachometer, fuel level, engine temperature. Warning lights for various systems. Trip computer on higher trims.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months for severe driving, or 7,500 miles or 6 months for normal driving (consult manual for specific guidance).

Engine Oil Type:

Refer to manual: typically SAE 5W-30 or 5W-20 synthetic blend or full synthetic. Check owner's manual for exact API service classification (e.g., API SN/SP).

Engine Oil Capacity:

2.4L: Approx. 4.5 quarts (with filter); 3.0L V6: Approx. 4.5 quarts (with filter).

Air Filter Replacement:

Every 15,000 - 30,000 miles, or as needed based on driving conditions.

Spark Plug Replacement:

2.4L: Iridium plugs, typically 100,000 miles. 3.0L V6: Iridium plugs, typically 60,000 - 100,000 miles. Consult manual for specific recommendations.

Timing Belt Replacement:

Critical for 2.4L engine (interference engine). Recommended interval around 60,000 - 90,000 miles. The 3.0L V6 is generally a timing chain, which is designed to last the life of the engine but may require inspection.

Coolant Type:

Ethylene glycol based coolant, compatible with Japanese vehicles (e.g., Mitsubishi DiaQueen Super Long Life Coolant or equivalent).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid:

Dexron III ATF or approved power steering fluid.

Common Issues 2.4L:

Oil leaks from valve cover gasket or oil pan, potential for timing belt failure if not replaced on schedule (interference engine), ignition coil issues.

Common Issues 3.0L V6:

Intake manifold gasket leaks, spark plug blow-out (Tsb for some applications), PCV valve issues, oil cooler line leaks (if equipped).

Transmission Issues:

Automatic transmission issues can include slipping or harsh shifts, often related to fluid condition or solenoid failures.

Suspension Issues:

Worn suspension components like ball joints, tie rod ends, and bushings leading to knocking noises or poor handling.

Electrical Issues:

Window motor failures, power lock actuator issues, intermittent electrical gremlins often related to wiring harness integrity or grounding points.

📚 Vehicle History

Brand Heritage:

Mitsubishi has a long history in performance vehicles, including iconic models like the Lancer Evolution and 3000GT, establishing a reputation for sporty design and technology.

Third Gen Eclipse:

The third generation (2000-2005) represented a significant redesign, moving to a platform shared with the Chrysler Sebring and Dodge Stratus. It featured a more rounded, aggressive styling and a stronger focus on V6 power.

Production Location:

United States (Normal, Illinois) and Japan.

Third Gen Production Years:

2000-2005

🏆 Awards & Recognition

Automotive Press Awards:

While specific awards for the 2003-2005 models are less prominent than earlier generations, the model was generally well-regarded for its styling and performance value within its segment.

Consumer Reports Reliability:

Reliability ratings varied by model year and powertrain; it's advisable to consult historical consumer reports data for specific year-over-year assessments.

Emission Certifications:

Meets EPA and California Air Resources Board (CARB) emission standards for the respective model years.