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:...