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    Subaru Impreza WRX 2005 Service Repair Manual

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    The Subaru Impreza WRX, model year 2005, is a performance-oriented compact sedan renowned for its potent turbocharged boxer engine and the signature Symmetrical All-Wheel Drive system. This model, built on...
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    Type: Car
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    Sku: 89157
    The Subaru Impreza WRX, model year 2005, is a performance-oriented compact sedan renowned for its potent turbocharged boxer engine and the signature Symmetrical All-Wheel Drive system. This model, built on the GD chassis, carries a strong rally heritage, translating World Rally Championship success into an exhilarating driving experience. Its 2.0-liter EJ205 engine delivers approximately 227 horsepower, complemented by a 5-speed manual transmission and a robust drivetrain designed for optimal traction and handling in various conditions. The Impreza WRX of this era is celebrated for its engaging driving dynamics and sporty appeal, making it a favorite among performance enthusiasts. This comprehensive factory service manual provides detailed information essential for the maintenance and repair of your 2005 Subaru Impreza WRX. It covers all major vehicle systems, including engine mechanicals, fuel and ignition systems, drivetrain, brakes, suspension, and electrical components. Within its pages, you will find step-by-step repair procedures, diagnostic troubleshooting guides, maintenance schedules, technical specifications, and torque values. This manual is an invaluable resource for owners and technicians alike, ensuring the continued optimal performance and longevity of the vehicle.
    🏷️ Basic Information
    Identification
    Make:
    Subaru
    Model:
    Impreza WRX
    Year:
    2005
    Chassis Code:
    GDB
    Codes
    Engine Code:
    EJ205
    👋 Introduction
    Market Position
    Segment:
    Performance Compact Sedan/Wagon
    Target Audience:
    Enthusiasts, rally fans, performance-oriented drivers seeking an AWD turbocharged vehicle.
    Competitive Analysis
    Competitors:
    Mitsubishi Lancer Evolution, Honda Civic Si, Acura RSX, Volkswagen GTI, Ford Focus SVT (in spirit).
    Key Features
    Performance Focus:
    Known for its turbocharged boxer engine, symmetrical all-wheel-drive system, and sporty handling, appealing to a performance-driven market.
    Rally Heritage:
    Directly derived from Subaru's World Rally Championship (WRC) success, imbuing it with a performance pedigree.
    📋 Manual Details
    Coverage Areas
    Systems Covered:
    Engine Mechanical, Engine Control System (ECU), Fuel System, Ignition System, Emission Control System, Cooling System, Lubrication System, Intake System, Exhaust System, Clutch, Manual Transmission, Drivetrain (Front/Rear Axles, Differentials), Brakes (Front/Rear), Anti-lock Braking System (ABS), Power Steering, Suspension (Front/Rear), Wheels and Tires, Body (Exterior/Interior), Doors, Windows, Locks, Seats, Air Conditioning (HVAC), Supplemental Restraint System (SRS) Airbags, Electrical System (Wiring Diagrams, Components), Lighting, Instruments, Audio System, Wiper/Washer System, Diagnostic Procedures, Troubleshooting Guides, Specifications, Torque Values, Maintenance Schedules
    Page Count
    Estimated Pages:
    Over 2000 (typical for a comprehensive factory service manual)
    Manual Type
    Type:
    Factory Service Manual / Repair Manual
    Language
    Language:
    English
    Format
    Format:
    PDF (Digital Download)
    📖 Manual Coverage
    Systems Covered
    Engine Mechanical:
    Detailed procedures for engine disassembly, inspection, repair, and reassembly including cylinder head, pistons, connecting rods, crankshaft, camshafts, timing belt, and oil pump.
    Engine Control:
    Comprehensive coverage of the Engine Control Unit (ECU), sensors (e.g., MAP, TPS, O2, Crankshaft Position, Camshaft Position), actuators (e.g., fuel injectors, ignition coils), and diagnostic trouble codes (DTCs).
    Transmission Drivetrain:
    Includes repair and maintenance for the TY754 5-speed manual transmission, clutch system, front and rear differentials, driveshafts, and AWD system.
    Brakes Suspension:
    Covers brake system components (master cylinder, calipers, rotors, lines), ABS operation and diagnosis, power steering system, and detailed front/rear suspension component replacement and alignment procedures.
    Procedures Included
    Maintenance:
    Scheduled maintenance tasks, fluid changes, filter replacements, belt inspections, and general upkeep.
    Troubleshooting:
    Systematic diagnostic procedures for identifying and resolving common and uncommon problems, including symptom-based troubleshooting charts.
    Repair Rebuild:
    Step-by-step instructions for component removal, repair, and reinstallation for all major vehicle systems.
    Technical Depth
    Depth:
    Complete factory-level repair and diagnostic information, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic fluid changes to complete engine and transmission rebuilds.
    📊 Manual Specifications
    File Format
    File Type:
    PDF
    Searchability:
    Likely text-searchable PDF (depending on source quality), allowing for quick information retrieval.
    Printable:
    Yes, PDF format allows for printing of individual pages or sections.
    Print Quality
    Image Resolution:
    Variable, but typically high-resolution images and diagrams for clarity.
    Binding Type
    Digital Binding:
    N/A (Digital)
    Paper Type
    Digital Paper Type:
    N/A (Digital)
    ⚙️ Engine Specifications
    Primary Engine
    Engine Type:
    Horizontally Opposed (Boxer), 4-Cylinder, Turbocharged
    Displacement:
    2.0 Liters (1994 cc)
    Bore X Stroke:
    92.0 mm x 75.0 mm
    Compression Ratio:
    8.0:1
    Valvetrain:
    DOHC (Dual Overhead Camshafts), 16 Valves (4 valves per cylinder)
    Turbocharger:
    IHI VF39 (typically)
    Intercooler:
    Top-mounted air-to-air intercooler
    Performance
    Horsepower:
    227 hp @ 5600 rpm (approximate, depending on market and specific tuning)
    Torque:
    217 lb-ft @ 3200 rpm (approximate, depending on market and specific tuning)
    Fuel System
    Fuel Delivery:
    Sequential Multi-Port Fuel Injection (MPI)
    Fuel Type:
    Unleaded Gasoline (91 Octane or higher recommended)
    Ignition System:
    Electronic ignition with individual coil-on-plug ignition coils.
    🔧 Transmission
    Standard
    Transmission Type:
    5-Speed Manual Transmission
    Transmission Code:
    TY754
    Optional
    Transmission Type:
    None for WRX model
    Features
    Drivetrain:
    Symmetrical All-Wheel Drive (AWD) with Viscous Coupling Center Differential
    Clutch Type:
    Hydraulically actuated, single-plate, dry-type clutch.
    📐 Dimensions
    Exterior
    Length:
    173.8 inches (4415 mm)
    Width:
    68.3 inches (1735 mm)
    Height:
    56.1 inches (1425 mm)
    Wheelbase:
    100.1 inches (2540 mm)
    Front Track:
    58.3 inches (1480 mm)
    Rear Track:
    57.7 inches (1465 mm)
    Weights
    Curb Weight:
    3131 lbs (1420 kg) (approximate)
    Gross Vehicle Weight Rating:
    Not readily available, consult manual for specific ratings.
    Cargo
    Trunk Volume:
    11.4 cubic feet (sedan) / 30.4 cubic feet (wagon, seats up)
    🛡️ Safety Features
    Ratings
    NHTSA Front Impact:
    4 Stars (Driver), 4 Stars (Passenger)
    NHTSA Side Impact:
    4 Stars (Front), 4 Stars (Rear)
    IIHS Moderate Overlap Frontal:
    Good
    Active Features
    ABS:
    Standard Anti-lock Braking System (ABS)
    AWD:
    Standard Symmetrical All-Wheel Drive for enhanced traction and stability.
    Passive Features
    Airbags:
    Front driver and passenger airbags. Side airbags may be optional or standard depending on trim/market.
    Seatbelts:
    Three-point seatbelts with pretensioners and load limiters.
    Child Anchors:
    LATCH (Lower Anchors and Tethers for Children) system.
    💡 Technology Features
    Infotainment
    Audio System:
    Factory-installed AM/FM stereo with CD player. Speaker configuration typically 4-6 speakers.
    Driver Assistance
    Cruise Control:
    Standard cruise control system.
    Connectivity
    Aux Input:
    Typically not present on factory units; aftermarket solutions may exist.
    🔧 Maintenance
    Service Intervals
    Oil Change Interval:
    Every 3,750 - 5,000 miles or 6 months, whichever comes first (severe service may require more frequent changes). Consult manual for exact Subaru recommendations.
    Timing Belt Replacement:
    Typically every 60,000 - 105,000 miles or 5-7 years, whichever comes first. Crucial for the EJ205 engine. Manual will specify.
    Spark Plug Replacement:
    Refer to manual, generally around 30,000 - 60,000 miles depending on plug type.
    Fluid Specifications
    Engine Oil Type:
    SAE 5W-30 or 10W-30 Synthetic (API SG or higher). Consult manual for exact viscosity and API service classification.
    Engine Oil Capacity:
    4.8 US quarts (4.5 liters) with filter change (approximate).
    Transmission Fluid Type:
    Subaru Extra-S Gear Oil (or equivalent API GL-5, SAE 75W-90 synthetic).
    Differential Fluid Type:
    API GL-5, SAE 75W-90 synthetic for front and rear differentials.
    Coolant Type:
    Subaru Super Coolant (Blue) or equivalent silicate-free, long-life coolant (50/50 mix with distilled water).
    Known Issues
    Head Gaskets:
    While less common on the EJ205 compared to some later EJ engines, head gasket leaks can still occur. Manual provides inspection and replacement procedures.
    Piston Ring Land Cracks:
    Some EJ205 engines can be susceptible to piston ring land cracks under extreme conditions or with improper tuning. Manual covers piston inspection.
    Turbo Charger Wear:
    The IHI VF39 turbo can experience wear over time, affecting boost pressure. Manual guides on turbo inspection and replacement.
    Clutch Wear:
    Clutches in performance vehicles can wear faster depending on driving style. Manual details clutch inspection and replacement.
    📚 Vehicle History
    Brand Heritage
    Subaru Identity:
    Subaru has a long-standing reputation for its horizontally opposed engines and Symmetrical All-Wheel Drive systems, often associated with rally racing and all-weather capability.
    Model Evolution
    Gd Generation:
    The 2005 Impreza WRX is part of the second generation (GD chassis) Subaru Impreza, introduced in 2000. This generation saw significant styling changes and performance enhancements.
    Wrx Positioning:
    The WRX (World Rally eXperimental) variant was developed as a homologation special for rally racing, bringing that performance DNA to the street.
    Production
    Production Period:
    The second generation (GD) Impreza WRX was produced from 2000 to 2007, with facelifted models (often referred to as 'hawkeye' for the facelifted front end) appearing around 2006.
    🏆 Awards & Recognition
    Recognitions
    Performance Acclaim:
    The Subaru Impreza WRX has consistently received accolades for its performance, handling, and all-wheel-drive capabilities from automotive publications over the years.
    Ratings
    Car And Driver Editors Choice:
    Frequently listed as a notable performance car by publications like Car and Driver.
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