🏷️ Basic Information

Make:

Mitsubishi

Model:

Galant

Year:

1990

👋 Introduction

Market Position:

The 1990 Mitsubishi Galant was a key player in the mid-size sedan segment, known for its sporty handling and advanced technology for its time, competing against vehicles like the Honda Accord, Toyota Camry, and Ford Taurus. It aimed to offer a blend of performance, comfort, and distinctive styling.

Competitive Analysis:

Positioned as a more driver-focused alternative to some competitors, the Galant emphasized its chassis dynamics, often featuring independent suspension on all four wheels and optional all-wheel drive (AWD) in higher trims or specific markets. The styling was also more angular and aggressive compared to some contemporaries.

Key Features:

Advanced aerodynamic styling, sophisticated independent suspension, available ECI Multi Fuel Injection, optional 4-wheel steering (Super HICAS in some markets/trims), comfortable interior, and reliable powertrain options.

Styling:

The E30 Galant featured a sleek, aerodynamic design for its era, characterized by clean lines, flush headlights (often composite), and a low drag coefficient. It was considered a modern and somewhat European-inspired design.

📋 Manual Details

Coverage Areas:

Engine, Drivetrain, Suspension, Steering, Brakes, Electrical System, Bodywork, HVAC, Fuel System, Emissions Control, Maintenance, Troubleshooting, Diagnostic Procedures, Wiring Diagrams, Technical Specifications, Special Tools

Page Count:

Estimated 1500+ pages (typical for comprehensive factory service manuals of this era)

Manual Type:

Factory Service Manual (FSM) / Repair Manual

Language:

English

Format:

Software (likely digital format like PDF or proprietary software)

📖 Manual Coverage

Systems Covered:

Engine Mechanical, Engine Control (ECI/MPI), Fuel Injection, Ignition System, Cooling System, Lubrication System, Exhaust System, Automatic Transmission (AT), Manual Transmission (MT), Front Suspension, Rear Suspension, Power Steering, Hydraulic Power Brakes, Anti-lock Braking System (ABS - if equipped), Lighting System, Instrumentation, Audio System, Power Windows/Locks/Mirrors, Wiper/Washer System, Climate Control (HVAC), Body Electrical, Chassis Electrical, Security System, Diagnostic Trouble Codes (DTCs), Emissions Control Systems

Procedures Included:

Routine Maintenance, Inspection, Adjustment, Component Removal and Installation, Overhaul Procedures, Troubleshooting Charts, Diagnostic Flowcharts, Wiring Diagram Interpretation, Torque Specifications, Special Tool Usage, Component Testing, Driveability Diagnosis

Technical Depth:

Comprehensive; covers everything from basic fluid changes and adjustments to in-depth engine rebuilds, transmission overhauls, and advanced electrical system diagnostics.

Wiring Diagrams:

Extensive color-coded wiring diagrams covering all major electrical systems, including engine control, lighting, accessories, and power circuits.

Diagnostic Trouble Codes:

Includes lists of DTCs for the ECI Multi system and procedures for reading codes (e.g., via a diagnostic connector and jumper wire or an early OBD-I scanner).

Special Tools:

Lists and diagrams for specialized Mitsubishi factory tools required for specific repair procedures (e.g., timing belt tensioner tools, fuel pressure gauges, electrical diagnostic tools).

Body And Trim:

Covers body panel removal/installation, door mechanisms, interior trim pieces, exterior moldings, glass replacement, and basic body repair techniques.

📊 Manual Specifications

File Format:

Digital (likely PDF or proprietary executable with searchable content)

Print Quality:

High-resolution digital scans or original factory data, ensuring clarity of diagrams and text.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

Searchable Text:

Yes, digital formats typically offer full text searchability for quick access to information.

Printable Pages:

Yes, most digital formats allow for printing of selected pages or sections.

⚙️ Engine Specifications

Primary Engine:

4G63 2.0L Inline-4 SOHC (Naturally Aspirated). This engine was known for its robustness and was a predecessor to the legendary turbocharged versions used in Lancers and Evos. Also available were larger displacement engines like the 2.0L DOHC or a 2.5L V6 in certain markets or higher trims (e.g., 6A12 V6).

Performance:

Naturally Aspirated 2.0L SOHC: Approximately 103-114 horsepower and 120-130 lb-ft of torque, depending on specific tuning and market. V6 variants offered higher horsepower and torque figures.

Fuel System:

Electronic Multi-Point Fuel Injection (ECI Multi). Features include an engine control unit (ECU) managing fuel delivery, ignition timing, and other engine parameters. Fuel pressure regulator, fuel pump, injectors.

Engine Code Example:

4G63

Displacement Cc:

1997 (for 2.0L variant)

Compression Ratio:

Typically around 9.0:1 to 10.0:1 for naturally aspirated variants.

Ignition System:

Distributorless Ignition System (DIS) or distributor with electronic ignition control unit (ECU).

Cooling System Capacity:

Approx. 6.0-7.0 liters (depending on engine and configuration).

Lubrication System Capacity:

Approx. 4.0-4.5 liters (including filter).

🔧 Transmission

Standard:

5-speed Manual Transmission

Optional:

4-speed Automatic Transmission (with Overdrive)

Features:

Both transmissions were designed for smooth operation and fuel efficiency. Automatic transmissions typically featured electronic control for improved shift quality. Clutch type: Dry single-plate for manual. Transmission fluid type: ATF SP-II or equivalent for automatic, Gear oil GL-4 for manual (specific viscosity depends on ambient temperature).

Gear Ratios Manual:

Specific ratios vary by model, but typically: 1st: ~3.500, 2nd: ~1.900, 3rd: ~1.300, 4th: ~1.000, 5th: ~0.750, Reverse: ~3.000, Final Drive: ~4.300 (for 2.0L FWD).

Gear Ratios Automatic:

Specific ratios vary by model, but typically: 1st: ~2.700, 2nd: ~1.450, 3rd: ~1.000, 4th: ~0.700, Reverse: ~2.000.

📐 Dimensions

Exterior:

Overall Length: Approx. 179.7 inches, Overall Width: Approx. 68.7 inches, Overall Height: Approx. 54.9 inches, Wheelbase: Approx. 104.7 inches

Interior:

Seating Capacity: 5 passengers. Interior volume was competitive for the mid-size segment, offering good headroom and legroom for its class.

Cargo:

Trunk capacity: Approximately 14-15 cubic feet. Fold-down rear seats were available on some trims to increase cargo versatility.

Weights:

Curb Weight: Approx. 2,800 - 3,200 lbs (depending on engine, transmission, and trim level)

Ground Clearance:

Approx. 5.5 - 6.0 inches (depending on suspension and wheel size).

Wheelbase:

104.7 inches (2659 mm)

Track Width Front:

Approx. 58.0 inches (1473 mm)

Track Width Rear:

Approx. 57.5 inches (1460 mm)

Fuel Tank Capacity:

Approx. 15.5 gallons (58.7 liters)

🛡️ Safety Features

Ratings:

No specific crash test ratings readily available from official sources like NHTSA for this specific model year in the same format as modern tests. However, typical safety features of the era included seat belts, and some models may have offered optional airbags.

Active Features:

Front-wheel drive (standard), available All-Wheel Drive (AWD) for enhanced traction, optional Anti-lock Braking System (ABS), power-assisted steering.

Passive Features:

Three-point seat belts for all seating positions, padded dashboard and interior surfaces, safety-design steering column, reinforced door beams, laminated front windshield.

Brakes Front:

Ventilated Disc Brakes

Brakes Rear:

Solid Disc Brakes or Drum Brakes (depending on trim/market)

Parking Brake:

Mechanical handbrake operating on rear wheels.

Tire Size Standard:

Commonly 195/60R14 or 205/60R14 on standard trims.

Wheel Bolt Pattern:

4x114.3 mm (4.5 inch)

Airbag Availability:

Driver's side airbag was an optional feature on some later models of this generation. Passenger airbags were not common on 1990 models.

💡 Technology Features

Infotainment:

Basic factory-installed AM/FM cassette stereo systems. Some higher trims might have offered a premium sound system with more speakers or a graphic equalizer. Digital climate control displays were also a premium feature for the time.

Driver Assistance:

Optional Anti-lock Braking System (ABS) on some models. Available All-Wheel Drive (AWD) and All-Wheel Steering (AWS) systems offered enhanced stability and maneuverability.

Connectivity:

No integrated modern connectivity features such as Bluetooth or USB. Connectivity was limited to the audio system and basic vehicle diagnostics.

Cruise Control:

Optional on many trims, typically electronically controlled via steering wheel buttons or a stalk.

Power Steering Type:

Hydraulic power-assisted rack and pinion steering.

🔧 Maintenance

Service Intervals:

Oil Change: Every 3,000-5,000 miles or 6 months. Air Filter: Inspect every 15,000 miles, replace as needed. Spark Plugs: Replace every 30,000 miles. Timing Belt: Critical component for the 4G63 engine; replace every 60,000 miles or 5 years to prevent catastrophic engine damage due to interference design. Transmission Fluid: Automatic transmission fluid (ATF) flush/replacement every 30,000-50,000 miles; manual transmission gear oil every 60,000 miles. Coolant: Flush and replace every 30,000 miles or 2 years. Brake Fluid: Inspect annually, replace every 2-3 years.

Fluid Specifications:

Engine Oil: API SG or higher, SAE 10W-30 or 10W-40 recommended (check owner's manual for specific viscosity based on temperature). Coolant: Ethylene glycol-based antifreeze/coolant (50/50 mix with distilled water). Brake Fluid: DOT 3. Power Steering Fluid: ATF DEXRON II or equivalent. Manual Transmission Fluid: SAE 75W-90 GL-4. Automatic Transmission Fluid: ATF SP-II or equivalent.

Known Issues:

Timing belt failure (critical for 4G63), O2 sensor degradation leading to check engine light, catalytic converter issues, potential for rust in certain climates (especially around wheel wells and rocker panels), worn engine mounts, aging fuel injectors, power window motor failures, occasional ECU glitches.

Spark Plug Type:

NGK BPR6ES or equivalent (check for specific engine variant, e.g., platinum or iridium recommended for extended life). Gap: 0.032 inches (0.8 mm).

Timing Belt Part Number Example:

Gates T135 or Dayco T135 (verify exact fitment).

Drive Belt Tensioner Maintenance:

Check drive belts for tension and wear at each service. Automatic tensioners were less common; manual adjustment was typical.

Chassis Lubrication:

Grease fittings on suspension components (ball joints, tie rod ends) may require periodic lubrication, typically every 15,000 miles, depending on climate and usage.

Idle Speed Specification:

Approx. 750-850 RPM in Park/Neutral for automatic, or 700-800 RPM for manual (with A/C off, engine at operating temperature). Check manual for specific values.

Engine Vacuum Specification:

Approx. 17-21 in-Hg at idle (engine warm, at specification RPM).

Valve Lash Adjustment:

Recommended at higher mileage intervals (e.g., 60,000-100,000 miles) or if engine noise is present. Hydraulic lifters were common, but some engines required mechanical adjustment. Check manual for specific procedure and specifications.

📚 Vehicle History

Brand Heritage:

Mitsubishi Motors has a long history in automotive manufacturing, known for its engineering prowess and competitive vehicles across various segments. The Galant nameplate has been used by Mitsubishi since the 1960s, evolving through many generations.

Model Evolution:

The 1990 model represents the seventh generation (E30 series) of the Mitsubishi Galant, introduced in late 1987. This generation marked a significant design departure with its sleeker, more aerodynamic styling and advanced chassis technology, including multi-link suspensions and optional all-wheel steering.

Production:

The E30 Galant was produced from 1987 to 1993. Key manufacturing plants were located in Japan. This generation was sold globally, including in North America, Europe, and Australia, often with different engine and trim configurations.

Platform:

E30 platform

Competitors Historic:

Honda Accord, Toyota Camry, Ford Taurus, Nissan Stanza, Mazda 626, Chevrolet Lumina.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 1990 model are not widely publicized, the Galant series historically received positive reviews for its design, handling, and value in the automotive press of its time.