Engine Mechanical:
Engine assembly, disassembly, inspection, repair of internal components (pistons, rings, bearings, crankshaft, camshafts, valves), cylinder head, block, timing belt/chain, seals, and gaskets.
Engine Management:
Fuel injection system, ignition system, emissions control systems (EVAP, EGR), sensors (O2, MAF, TPS, crank/cam position), actuators, engine control module (ECM) diagnostics and troubleshooting.
Transmission Manual:
Clutch operation, gear shifting mechanisms, transmission overhaul, fluid types, maintenance, and repair for 5-speed manual transmissions.
Transmission Automatic:
Automatic transmission operation, fluid types, maintenance, torque converter, valve body, transmission control module (TCM) diagnostics, repair, and overhaul for 4-speed automatic transmissions.
Drivetrain AWD:
Subaru's Symmetrical All-Wheel Drive (AWD) system, viscous coupling, center differential, front and rear differentials, drive shafts, axle shafts, maintenance, and repair.
Suspension:
Front and rear suspension components (struts, shocks, springs, control arms, bushings), alignment specifications, wheel bearing replacement, and troubleshooting.
Brakes:
Front and rear brake systems (discs, pads, calipers, rotors, drums, shoes), hydraulic system (master cylinder, brake lines, booster), parking brake, ABS system operation, diagnostics, and repair.
Steering:
Power steering system (pump, reservoir, lines, rack and pinion), steering column, tie rod ends, maintenance, and repair.
Electrical System:
12V battery system, charging system (alternator), starting system (starter motor), lighting system (headlights, taillights, interior lights), fuses, relays, wiring diagrams for all circuits.
Body Exterior:
Body panel removal and installation, doors, hood, tailgate, bumpers, glass, seals, trim, rust prevention, and repair.
Body Interior:
Dashboard removal, seating systems, interior trim, headliner, carpets, airbags, climate control panel, and accessory components.
HVAC:
Air conditioning system operation, refrigerant handling, compressor, condenser, evaporator, heater core, blower motor, climate control system, diagnostics, and repair.
Safety Systems:
Airbag system (SRS) operation, diagnostics, and component replacement, seatbelt mechanisms.
Diagnostics Troubleshooting:
Diagnostic trouble codes (DTCs), common problems and solutions, systematic troubleshooting procedures for all major systems.
Scheduled Maintenance:
Oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, coolant flushes, brake fluid flushes, transmission fluid changes, differential fluid changes, timing belt inspection/replacement intervals.
Engine Repair:
Head gasket replacement, piston ring replacement, bearing replacement, valve adjustment, timing belt replacement (critical procedure), engine mounts.
Transmission Repair:
Clutch replacement, manual transmission overhaul, automatic transmission clutch pack replacement, valve body repair, torque converter replacement.
Brake Repair:
Brake pad and rotor replacement, brake caliper overhaul, brake line replacement, master cylinder replacement, brake booster replacement, ABS sensor replacement.
Suspension Steering Repair:
Strut/shock absorber replacement, control arm bushing replacement, ball joint replacement, tie rod end replacement, wheel bearing replacement, power steering pump replacement, rack and pinion replacement.
Electrical Diagnostics:
Using wiring diagrams, testing circuits, component testing, troubleshooting electrical faults, starter and alternator testing, battery testing.
Body Work:
Body panel alignment, door mechanism repair, tailgate hinge and latch repair, bumper cover replacement, glass and seal replacement.
HVAC Repair:
Refrigerant system evacuation and recharge, leak detection, component replacement (compressor, condenser, evaporator, drier), heater core replacement, blower motor replacement.
Airbag System Service:
SRS component diagnosis, airbag module replacement, seatbelt pretensioner replacement (with specific safety precautions).
Wheel Alignment:
Front and rear wheel alignment specifications (camber, caster, toe) and procedures.
Depth:
Comprehensive, covering everything from routine maintenance to complete engine and transmission rebuilds, including detailed diagnostic procedures and specifications.
Oil Change Interval:
Every 3,750 miles or 3.75 months (severe duty) or 7,500 miles or 7.5 months (normal duty) - consult manual for definitive intervals based on driving conditions.
Timing Belt Replacement:
Typically every 90,000-105,000 miles or 7 years. Critically important for EJ25 engines. Refer to manual for exact interval and inspection procedures.
Transmission Fluid Change Auto:
Every 30,000 - 60,000 miles, or as per severe duty schedule. Use only specified ATF.
Transmission Fluid Change Manual:
Every 60,000 miles. Use specified gear oil.
Engine Oil:
API SG or higher, SAE 5W-30 or 10W-30 (check owner's manual for viscosity based on ambient temperature). Capacity: Approx. 4.5 quarts with filter.
Coolant:
Subaru Super Coolant (blue) or equivalent silicate-free, long-life coolant. 50/50 mix with distilled water. Capacity: Approx. 7.1 quarts.
Automatic Transmission Fluid:
Subaru ATF-HP (or equivalent Dexron-III/Mercon compatible fluid if specified in manual for this era).
Manual Transmission Fluid:
API GL-5, SAE 75W-90 gear oil.
Differential Fluid:
API GL-5, SAE 75W-90 gear oil for front and rear differentials.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Head Gaskets:
While less prevalent in the '99 model compared to later generations, head gasket leaks can still occur, especially in the naturally aspirated EJ25. Turbo models are more susceptible.
Timing Belt:
Critical to replace at recommended intervals. Failure leads to catastrophic engine damage due to interference design.
Cv Axles:
Front CV boots can wear and tear, leading to CV joint failure. Check for cracks and grease leakage.
Rear Main Seal:
Can develop leaks over time.
Suspension Components:
Bushing wear in control arms and sway bars can lead to clunks and poor handling.