Engine Mechanical:
Complete engine overhaul, disassembly, assembly, inspection, tuning, lubrication systems, cooling systems, fuel delivery, emission controls.
Engine Performance:
Detailed troubleshooting for performance issues, diagnostic procedures, sensor testing, ECU diagnosis.
Transmission Automatic:
Diagnosis, overhaul, repair, fluid checks, valve body inspection, electronic control unit (TCU) diagnosis.
Transmission Manual:
Overhaul, repair, clutch system service, gear engagement troubleshooting.
Drivetrain:
Front and rear differential service, driveshaft inspection and repair, CV joint maintenance, AWD system specific procedures.
Suspension:
Front and rear suspension component diagnosis, replacement of struts, shocks, control arms, bushings, wheel bearing service.
Steering:
Power steering system diagnosis and repair, steering rack and pinion service, steering column components.
Brakes:
Brake system diagnosis, hydraulic system bleeding, brake pad and rotor replacement, ABS system troubleshooting, parking brake adjustment.
Electrical System:
Wiring diagrams, circuit testing, component diagnosis (starter, alternator, battery), lighting systems, accessory circuits.
Body Exterior:
Panel removal and installation, door and latch mechanisms, glass replacement, bumper repairs, trim piece service.
Body Interior:
Dashboard removal, seat mechanisms, trim panel service, carpet replacement, headliner repair.
HVAC:
Air conditioning system diagnosis, refrigerant handling, heater core replacement, blower motor service, climate control system troubleshooting.
Safety Systems:
Airbag system diagnosis and component replacement (SRS module, sensors, clock spring), seat belt service.
Diagnostics:
OBD-II diagnostic trouble codes (DTCs), diagnostic connector location, scanner usage, live data interpretation.
Scheduled Maintenance:
Detailed recommended service intervals for oil changes, filter replacements, fluid flushes, spark plug replacement, belt inspections.
Repair Procedures:
Step-by-step repair instructions for all major mechanical and electrical components, including torque specifications and specialized tool requirements.
Troubleshooting Guides:
Systematic troubleshooting flowcharts and diagnostic trees for common and uncommon vehicle issues.
Component Removal Installation:
Detailed instructions for removing and reinstalling virtually every component for repair or replacement.
Specifications Data:
All necessary technical data, including clearances, tolerances, fluid capacities, and torque values for precise repairs.
Depth:
Comprehensive, suitable for professional technicians, covering everything from basic maintenance to complete engine and transmission overhauls.
Diagnostic Capability:
Advanced diagnostic procedures, including sensor testing, actuator testing, and electronic control unit (ECU) troubleshooting.
Rebuild Instructions:
Detailed instructions for the complete disassembly, inspection, and reassembly of engines and transmissions.
Engine Code Variants:
Likely includes EJ20 SOHC/DOHC and EJ25 SOHC/DOHC boxer engines, common for this generation.
2.0L Ej20:
2.0-liter (1994cc) Naturally Aspirated Boxer Engine.
2.5L Ej25:
2.5-liter (2457cc) Naturally Aspirated Boxer Engine.
2.5L Gt Turbo:
2.5-liter (2457cc) Turbocharged Boxer Engine (GT models).
Performance Naturally Aspirated
Horsepower 2.0L:
Approx. 125-140 hp (depending on configuration).
Torque 2.0L:
Approx. 130-145 lb-ft.
Horsepower 2.5L:
Approx. 160-170 hp (depending on configuration).
Torque 2.5L:
Approx. 160-175 lb-ft.
Horsepower 2.5L Gt:
Approx. 217 hp.
Torque 2.5L Gt:
Approx. 241 lb-ft.
Fuel Delivery:
Multi-point Fuel Injection (MPI), electronically controlled.
Fuel Type:
Unleaded gasoline (91 RON or higher recommended, especially for turbo models).
Ignition System:
Electronic ignition with distributorless ignition system (DIS) on some variants, coil-on-plug on others.
Oil Change Interval:
Typically every 5,000-10,000 km (3,000-6,000 miles) or 6 months, depending on driving conditions and oil type used. Check manual for specifics.
Spark Plug Replacement:
Intervals vary by plug type (e.g., iridium may last longer), typically 60,000-100,000 km (40,000-60,000 miles).
Timing Belt:
Crucial: Subaru boxer engines of this era typically use a timing belt. Replacement interval is critical, usually around 90,000-105,000 km (56,000-65,000 miles) or 5-7 years. Failure can cause catastrophic engine damage.
Engine Oil:
Refer to manual for specific viscosity (e.g., 5W-30 or 10W-30) and API service classification. Often specified as API SJ or SL.
Coolant:
Subaru Super Coolant (blue) or equivalent ethylene glycol-based coolant. Check manual for capacity and mix ratio.
Transmission Fluid Auto:
Subaru ATF HP (High Performance) or equivalent Dexron III/Mercon. Check manual for capacity and change interval.
Transmission Fluid Manual:
Gear oil for 5-speed manual: typically 75W-90 GL-5. Check manual for capacity.
Differential Fluid:
Front and Rear: 75W-90 GL-5. Check manual for capacity.
Head Gaskets:
While less prone than earlier generations, head gasket leaks (especially coolant seepage) can occur on EJ25 engines.
Oil Leaks:
Common areas include valve cover gaskets, oil pan gaskets, and rear main seals over time.
Catalytic Converter:
Can become clogged over time, leading to performance loss.
ABS Sensors:
ABS wheel speed sensors can fail, causing ABS warning lights.
Air Conditioning:
A/C compressor clutch or refrigerant leaks can occur with age.