Subaru Impreza WRX 1993-1996 Workshop Repair Service Manual

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🏷️ Basic Information Identification Make: Subaru Model: Impreza WRX Years Covered: 1993, 1994, 1995, 1996 Codes Chassis Code: GC8 Engine Code Primary: EJ20G 👋 Introduction Market Position Segment: Compact Performance...

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Type: Car

Vendor:

Sku: 483120

Tags: 1993 1994 1995 1996 Car Cars Impreza WRX Misc Subaru

Product variants

Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza WRX

Years Covered:

1993, 1994, 1995, 1996

Codes

Chassis Code:

Engine Code Primary:

EJ20G

👋 Introduction

Market Position

Segment:

Compact Performance Sedan/Wagon

Target Audience:

Enthusiast drivers, rally sport fans, owners seeking detailed maintenance and repair knowledge.

Competitive Analysis

Key Competitors Era:

Mitsubishi Lancer Evolution (Evo I-III), Ford Escort RS Cosworth, Toyota Celica GT-Four, Nissan Pulsar GTI-R

Key Features

Performance Differentiator:

Symmetrical All-Wheel Drive (AWD) system, turbocharged Boxer engine, rally-bred heritage.

Design Philosophy:

Functional, performance-oriented, with distinctive hood scoop and body kit.

📋 Manual Details

Coverage Areas

Regions Covered:

Global (technical specifications are largely universal for these models)

Page Count

Estimated Page Count:

1000+

Manual Type

Type:

Workshop Repair Service Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Detailed component removal, inspection, repair, and reassembly (cylinder head, block, crankshaft, pistons, rings, bearings, etc.)

Engine Electrical:

Ignition system, fuel injection system (ECU, sensors, actuators), starting system, charging system, lighting, wiring diagrams

Transmission:

Manual transmission (detailed overhaul, clutch, drive shafts, differentials)

Brakes:

Hydraulic system, ABS (if equipped), caliper and rotor service, brake fluid specifications

Suspension:

Front and rear suspension components, alignment specifications, shock absorbers, struts, bushings

Steering:

Power steering system, steering rack, tie rods, alignment specifications

Fuel System:

Fuel tank, fuel pump, injectors, fuel pressure regulator, fuel filter replacement

Cooling System:

Radiator, water pump, thermostat, hoses, coolant specifications, bleeding procedures

Exhaust System:

Component replacement, gasket specifications

Climate Control:

HVAC system diagnosis and repair, refrigerant handling (basic)

Body And Trim:

Interior and exterior trim removal and installation, panel repair (basic)

Electrical Body:

Interior lighting, power windows, door locks, mirrors, audio system wiring

Procedures Included

Routine Maintenance:

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

Troubleshooting Diagnostics:

Step-by-step diagnostic procedures for common drivability issues, electrical faults, and mechanical problems using symptom-based analysis

Component Overhaul:

Detailed instructions for the complete disassembly, inspection, repair, and reassembly of major components like the engine and transmission.

Torque Specifications:

Comprehensive list of torque values for all critical fasteners across various systems.

Special Tools:

Identification and usage instructions for specialized tools required for specific procedures.

Wiring Diagrams:

Detailed, system-specific wiring schematics for electrical troubleshooting.

Technical Depth

Depth:

Comprehensive, covering everything from basic fluid changes to full engine and transmission rebuilds.

Diagnostic Capability:

Advanced diagnostics, including sensor readings, ECU functions, and system checks.

Repair Precision:

Emphasis on correct procedures, clearances, and specifications for professional-level repairs.

📊 Manual Specifications

File Format

Digital Format:

Searchability:

Likely text-searchable for efficient information retrieval.

Print Quality

Image Resolution:

High resolution for clear diagrams and illustrations.

Binding Type

Binding:

N/A (Digital Download)

Paper Type

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Horizontally Opposed (Boxer), Turbocharged, Intercooled

Engine Code:

EJ20G

Displacement:

1994 cc (2.0 Liters)

Bore X Stroke:

92.0 mm x 75.0 mm

Compression Ratio:

8.0:1

Horsepower Ps:

240 PS (approx. 237 bhp)

Horsepower Rpm:

6,000 rpm

Torque Lb-Ft:

240 lb-ft (approx. 325 Nm)

Torque Rpm:

4,800 rpm

Performance

0-60 Mph Estimate:

5.0 - 5.5 seconds (depending on source and conditions)

Fuel System

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type:

Unleaded Gasoline (91+ Octane Recommended)

Turbocharger:

TD05H-16G (or similar variant)

Intercooler:

Air-to-air front-mounted intercooler

🔧 Transmission

Standard

Type:

5-Speed Manual

Drive Layout:

Symmetrical All-Wheel Drive (AWD)

Optional

Type:

None (WRX models of this era were exclusively manual)

Features

Differential Type:

Center viscous coupling, front helical LSD, rear viscous LSD (specific variants might differ slightly)

Gear Ratios:

Detailed gear ratios are available within the manual for each gear and final drive.

Clutch Type:

Hydraulically operated, single dry plate

📐 Dimensions

Exterior

Length:

Approx. 4,340 mm (170.9 in)

Width:

Approx. 1,700 mm (66.9 in)

Height:

Approx. 1,405 mm (55.3 in)

Wheelbase:

Approx. 2,520 mm (99.2 in)

Track Width Front:

Approx. 1,450 mm (57.1 in)

Track Width Rear:

Approx. 1,445 mm (56.9 in)

Ground Clearance:

Approx. 140 mm (5.5 in)

Wheel Bolt Pattern:

5x100

Wheel Size Standard:

16x7.0J

Tire Size Standard:

205/50R16

Weights

Curb Weight:

Approx. 1,270 - 1,320 kg (2,794 - 2,910 lbs)

🛡️ Safety Features

Ratings

Crash Test Data:

Limited official data available for this era and specific model in many regions. Focus on inherent design safety.

Active Features

AWD System:

Symmetrical All-Wheel Drive provides enhanced traction and stability.

Anti-lock Braking System (standard on most WRX models of this period, check specific market).

Passive Features

Airbags:

Driver's airbag standard; passenger airbag optional or market-dependent.

Seat Belts:

Three-point front and rear seat belts, pre-tensioners for front belts.

Chassis Design:

Reinforced safety cell, crumple zones.

💡 Technology Features

Infotainment

Audio System:

Factory AM/FM stereo with cassette player. Aftermarket head units are common upgrades.

Gauges:

Driver-focused dashboard with tachometer, speedometer, fuel gauge, and temperature gauge. Boost gauge often integrated or added.

Driver Assistance

Traction Control:

Limited to ABS and the inherent benefits of AWD. No electronic stability control systems.

Cruise Control:

Optional feature, depending on trim level and market.

Connectivity

Connectivity Features:

No modern connectivity features (Bluetooth, USB, etc.) from the factory.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 3,000 - 5,000 miles (5,000 - 8,000 km) or 6 months, whichever comes first. Consult manual for exact specification.

Engine Oil Type:

Refer to manual for specific viscosity (e.g., 5W-30 or 10W-30 synthetic recommended).

Transmission Fluid Interval:

Refer to manual for specific mileage/time interval for manual transmission fluid change.

Differential Fluid Interval:

Refer to manual for specific mileage/time interval for front and rear differential fluid change.

Coolant Replacement Interval:

Refer to manual for specific mileage/time interval for coolant flush and replacement.

Fluid Specifications

Engine Oil Capacity:

Approx. 4.5 Liters (4.7 US Quarts) with filter change.

Coolant Type:

Ethylene glycol-based coolant (typically a green type).

Brake Fluid Type:

DOT 3 or DOT 4

Transmission Fluid Type:

GL-4 or GL-5 gear oil (manual transmission), specific viscosity recommended in manual.

Differential Fluid Type:

GL-5 gear oil (manual transmission), specific viscosity recommended in manual.

Known Issues

Engine Reliability:

Head gasket failures can occur, particularly with modified or aggressively driven engines. EJ20G is robust but requires proper maintenance.

Turbocharger Wear:

Original turbochargers can experience wear or seal failure over time; regular oil changes are critical.

Suspension Bushings:

Rubber suspension bushings can degrade, leading to noise and imprecise handling.

Electrical Gremlins:

Aging wiring harnesses and connectors can lead to intermittent electrical issues.

Rust Corrosion:

As with many vehicles of this age, rust can be an issue, particularly in areas exposed to salt and moisture (wheel arches, sills).

📚 Vehicle History

Brand Heritage

Rally Motorsport:

Subaru's deep roots and success in the World Rally Championship (WRC) directly influenced the WRX's development and reputation.

Model Evolution

Generation Introduction:

The first generation Impreza (GC/GF/GM) was introduced in late 1992 for the 1993 model year. The WRX variant debuted shortly after as the performance flagship.

Generations Covered:

This manual specifically covers the initial 'GC8' generation of the WRX.

Production

Manufacturing Location:

Japan

Production Period:

1992-2000 (for the first generation chassis)

🏆 Awards & Recognition

Recognitions

Rally Legend:

The WRX became an instant icon due to its rally pedigree and performance capabilities, widely respected among enthusiasts.

Performance Car Of The Year:

While specific awards for this exact model year are less documented than later generations, the Impreza WRX platform consistently received praise for its handling and performance in its class.