Subaru Impreza (STI) Service & Repair Manual 2001 2002

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🏷️ Basic Information Identification Make: Subaru Model: Impreza (STI) Year: 2002 Model Code: GDB Chassis Code: GDB Market Designation: Global (with specific JDM variants often covered) 👋 Introduction Market Position...

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标签: 2001 2002 Car Cars Impreza (STI) Misc Subaru

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza (STI)

Year:

Model Code:

Chassis Code:

Market Designation:

Global (with specific JDM variants often covered)

👋 Introduction

Market Position

Segment:

Performance Compact Sedan/Hatchback

Iconic rally-bred performance, turbocharged boxer engine, Symmetrical All-Wheel Drive system, focused driving dynamics

Competitive Analysis

Key Competitors:

Mitsubishi Lancer Evolution, Mitsubishi Eclipse GT, Acura Integra Type R (in spirit), Ford Focus SVT

Key Features

Performance Focus:

Designed for enthusiasts seeking high performance and track capability

AWD Capability:

Subaru's signature Symmetrical All-Wheel Drive for superior traction and handling

Turbocharged Engine:

Powerful EJ207 turbocharged boxer engine delivering robust power output

📋 Manual Details

Coverage Areas

Coverage:

All styles and trims of the 2002 Subaru Impreza and Impreza STI

Page Count

Estimated Page Count:

1500-2000 (typical for a complete factory service manual of this era)

Manual Type

Type:

Factory Service Manual / Workshop Manual

Language

Language:

English

Format

Format:

Digital (likely PDF)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine assembly, cylinder head, block, pistons, crankshaft, camshafts, valve train, timing belt/chain system, lubrication, cooling

Engine Management:

ECU, fuel injection, ignition system, sensors (MAP, MAF, O2, TPS, knock), emissions control, diagnostic trouble codes (DTCs)

Transmission Manual:

Gearbox assembly, clutch operation, shift linkages, differential, fluid specifications

Transmission Automatic:

Transmission assembly, torque converter, hydraulic control, gear selection, fluid specifications (if applicable to specific trims)

Drivetrain:

All-Wheel Drive (AWD) system, center differential, rear differential, driveshafts, CV joints

Suspension:

Front and rear suspension components, struts, shocks, springs, control arms, bushings, alignment specifications

Steering:

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

Brakes:

Brake system components (calipers, rotors, pads, lines), ABS system, parking brake, fluid specifications, bleeding procedures

Electrical System:

Battery, alternator, starter, wiring diagrams, lighting, fuses, relays, body control modules

HVAC:

Heating, ventilation, and air conditioning system, compressor, refrigerant, controls

Body And Chassis:

Body panels, doors, interior trim, glass, chassis components, rust prevention

Safety Systems:

Airbag system, seat belts, SRS module

Procedures Included

Scheduled Maintenance:

Oil changes, filter replacements, fluid checks, spark plug replacement, timing belt inspection/replacement

Troubleshooting:

Diagnostic procedures for common symptoms, fault code interpretation, step-by-step diagnostic flowcharts

Component Repair Rebuild:

Detailed instructions for engine, transmission, differential, suspension, and brake component overhauls and repairs

Diagnostics:

Electrical system diagnostics, fuel system diagnostics, emission control system diagnostics

Installations:

Component replacement procedures (e.g., clutch, turbocharger, sensors), body panel replacement

Technical Depth

Depth:

Comprehensive, from basic maintenance to full engine and transmission rebuilds, including electrical schematics and diagnostic procedures

📊 Manual Specifications

File Format

Digital Format:

PDF (Searchable, Printable)

Print Quality

Image Resolution:

High resolution for clear diagrams and text

Binding Type

Binding:

N/A (Digital Format)

Paper Type

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Code:

EJ207

Engine Type:

Horizontally-opposed (Boxer), turbocharged, intercooled, DOHC, 16-valve

Displacement:

1994 cc (2.0 Liters)

Performance

Horsepower Ps:

280 PS (276 hp) @ 6200 RPM (JDM Spec, often underreported for domestic markets)

Torque Nm:

350 Nm (258 lb-ft) @ 4000 RPM (JDM Spec)

Fuel System

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded Premium (95 RON or higher recommended)

Engine Internals

Pistons:

Forged pistons (STI specific)

Connecting Rods:

Forged connecting rods (STI specific)

Crankshaft:

Forged crankshaft

Cooling System

Radiator Type:

Aluminum, high-efficiency

Lubrication System

Oil Capacity:

4.5 Liters (4.8 US Quarts) with filter

Turbocharger

Turbo Model:

IHI VF30 (or similar variant)

Boost Pressure:

Approx. 1.1-1.2 bar (16-17.5 psi) peak

🔧 Transmission

Standard

Transmission Type:

6-speed Manual Transmission

Optional

Transmission Type:

N/A for STI model in this year

Features

AWD System:

Symmetrical All-Wheel Drive with Driver Controlled Center Differential (DCCD)

Front Differential:

Viscous coupling, limited-slip

Rear Differential:

Viscous coupling, limited-slip (or helical LSD on some models)

Fluid Specifications

Manual Transmission Fluid:

Subaru Extra-S Gear Oil (or equivalent GL-5 75W-90)

Rear Differential Fluid:

Subaru Extra-S Gear Oil (or equivalent GL-5 75W-90)

📐 Dimensions

Exterior

Length:

4415 mm (173.8 in)

Width:

1770 mm (69.7 in)

Height:

1410 mm (55.5 in)

Wheelbase:

2525 mm (99.4 in)

Ground Clearance:

135 mm (5.3 in)

Weights

Curb Weight:

1430 kg (3153 lbs)

Gross Vehicle Weight Rating:

1870 kg (4123 lbs)

Wheels And Tires

Standard Wheel Size:

17 x 7.5 inches

Standard Tire Size:

225/45R17

Bolt Pattern:

5 x 100 mm

🛡️ Safety Features

Ratings

NHTSA Front Crash Test:

4-star driver, 4-star passenger (for non-STI models, STI specific data may vary slightly)

IIHS Side Impact:

Good (for non-STI models)

Active Features

Standard Anti-lock Braking System

Traction Control:

Yes (often integrated with AWD/DCCD)

Passive Features

Airbags:

Driver and front passenger airbags, side airbags (optional or standard depending on market)

Seatbelts:

3-point front and rear seat belts with pretensioners and load limiters

💡 Technology Features

Infotainment

Head Unit:

Factory single-DIN or double-DIN CD player with AM/FM radio. Aftermarket upgrades common.

Speaker System:

Standard 4 or 6 speaker system.

Driver Assistance

Cruise Control:

Standard

Connectivity

Usb Aux Input:

Not standard; requires aftermarket installation.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-5,000 miles or 3-6 months (severe use recommended for performance driving)

Timing Belt Replacement Interval:

Every 60,000-100,000 miles or 5-7 years (crucial for EJ engines)

Spark Plug Replacement Interval:

Every 30,000-60,000 miles (depending on plug type)

Fluid Specifications

Coolant:

Subaru Super Coolant (Blue) or equivalent 50/50 mix with distilled water

Brake Fluid:

DOT 3 or DOT 4 Synthetic Brake Fluid

Power Steering Fluid:

Subaru Genuine ATF HP or equivalent ATF

Known Issues

Ring Land Failure:

A common issue on EJ207 engines, particularly when subjected to aggressive tuning or sustained high boost without proper supporting modifications. Manual addresses inspection and repair.

Head Gasket Leaks:

While less prevalent than on naturally aspirated Subarus of the era, it's a potential issue. Manual covers diagnosis and replacement procedures.

Clutch Wear:

Due to the performance nature, clutches can wear faster under aggressive driving. Manual details clutch inspection and replacement.

Catalytic Converter Clogging:

Can occur with age or poor fuel quality. Manual provides diagnostic methods.

📚 Vehicle History

Brand Heritage

Rally Roots:

Subaru's extensive World Rally Championship (WRC) success deeply influenced the Impreza STI's development, creating a road-going homologation special.

Model Evolution

Generation Code:

Second Generation (GD/GG)

Design Changes:

The second generation adopted a more rounded, 'bug-eye' (early models) or 'hawk-eye' (later models) front-end design compared to the first generation.

Production

Manufacturing Location:

Japan (Ota City, Gunma Prefecture)

Production Years For Generation:

2000-2007 (with facelifts in 2002/2003 and 2005)

🏆 Awards & Recognition

Recognitions

Motorsport Heritage:

Direct lineage from WRC championship cars, contributing to its enthusiast following and performance reputation.