Engine Mechanical:
Engine overhaul, timing belt replacement, piston and ring replacement, cylinder head service, crankshaft and bearing service, oil pump, oil cooler, cooling system (radiator, water pump, thermostat), lubrication system.
Engine Performance:
Turbocharger (twin-turbo for VR-4), intercooler system, boost pressure control, fuel injection system (MPI), ignition system (coil-on-plug where applicable), emissions control systems (EGR, EVAP), engine control module (ECM) diagnostics.
Transmission Drivetrain:
Manual transmission (Getrag 6-speed), automatic transmission (INVECS-II Sport Mode 4-speed), clutch system, transfer case (AWD), differentials (front and rear), drive shafts, CV joints, wheel hubs.
Suspension Steering:
Front and rear suspension (multi-link), electronically controlled suspension (ECS) operation and calibration, steering gear, power steering system, wheel alignment specifications.
Brakes:
Front and rear brake systems (vented discs, ABS), brake fluid specifications, caliper overhaul, rotor replacement, ABS control module diagnostics.
Electrical Electronics:
Full wiring diagrams, starter system, charging system (alternator, battery), lighting system (headlights, taillights, interior), power windows, power seats, climate control system, audio system, security system, central locking, keyless entry (later models).
Body Chassis:
Body panel repair and replacement, door mechanisms, glass replacement, interior trim removal and installation, aerodynamic components (active aero on some models), chassis structural repair.
HVAC:
Air conditioning system diagnosis and repair, refrigerant types, blower motor, evaporator, condenser, heater core.
Fuel System Details:
Fuel pump testing, fuel pressure regulator, fuel filter replacement, injector cleaning and testing, evaporative emission control (EVAP) system diagnosis.
Exhaust System:
Exhaust manifold, catalytic converter, muffler, exhaust pipe repair and replacement, oxygen sensor diagnosis.
Maintenance Procedures:
Scheduled maintenance intervals, oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, coolant flushes, brake fluid changes, transmission fluid changes, differential fluid changes.
Repair Procedures:
Step-by-step repair instructions for all major vehicle systems, component replacement, assembly and disassembly of parts, diagnostic troubleshooting guides.
Troubleshooting:
Diagnostic trouble codes (DTCs) and their meanings, common symptoms and causes, electrical system troubleshooting, engine performance issues, transmission problems.
Overhaul Procedures:
Complete engine and transmission overhaul procedures, including torque specifications, clearances, and assembly sequences.
Body Paint Repair:
Information on body panel alignment, dent repair, paint code identification, and minor cosmetic restoration procedures.
Depth Of Information:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission rebuilds.
Diagnostic Tools:
Coverage includes procedures for using common diagnostic tools and interpreting sensor data for troubleshooting.
Wiring Diagrams:
Detailed, system-specific wiring diagrams are a key component, crucial for electrical diagnostics and repairs.
Tire Wheel Specifications:
Tire sizes (e.g., 225/55R16, 245/40R18 for VR-4), wheel bolt pattern (e.g., 5x114.3), wheel offset information, tire pressure recommendations.
Engine Configuration Vr4:
3.0L (2972cc) DOHC 24-valve Twin-Turbocharged V6
Engine Code Base Sl:
6G72
Engine Configuration Base Sl:
3.0L (2972cc) DOHC 24-valve Naturally Aspirated V6
Horsepower Vr4 Early:
300-320 hp @ 6000 rpm (depending on year and market)
Torque Vr4 Early:
307-315 lb-ft @ 2500-3000 rpm (depending on year and market)
Horsepower Vr4 Late:
320-326 hp @ 6000 rpm (depending on year and market)
Torque Vr4 Late:
315-321 lb-ft @ 2500-3000 rpm (depending on year and market)
Horsepower Base Sl:
222-245 hp @ 6000 rpm (depending on year)
Torque Base Sl:
200-214 lb-ft @ 4500-5000 rpm (depending on year)
Fuel Delivery:
Multi-Point Fuel Injection (MPI)
Recommended Fuel:
Premium Unleaded Gasoline (91+ Octane)
Timing Belt Replacement:
Every 60,000 miles or 5 years (critical for interference engine).
Oil Change Interval:
Every 3,750-7,500 miles or 6-12 months, depending on driving conditions and oil type used.
Engine Oil Type Vr4:
SAE 10W-30 or 10W-40 Synthetic (API SN/SM/SL/SJ/SH/SG rated), check manual for exact viscosity and certification.
Engine Oil Type Na:
SAE 5W-30 or 5W-40 Synthetic (API SN/SM/SL/SJ/SH/SG rated), check manual for exact viscosity and certification.
Coolant:
Mitsubishi DiaQueen Super Long Life Coolant (or equivalent ethylene glycol-based coolant with deionized water).
Transmission Fluid Auto:
Mitsubishi DiaQueen ATF-SP III or equivalent.
Transmission Fluid Manual:
SAE 75W-90 GL-3 or GL-4 gear oil.
Differential Fluid Front AWD:
SAE 80W-90 GL-5 gear oil.
Differential Fluid Rear AWD:
SAE 75W-90 GL-5 gear oil.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Common Issues:
Fuel injector failure (especially on early models), oil leaks from valve covers and rear main seal, vacuum line deterioration, ECS component failure, ABS sensor issues, timing belt failure if not replaced on schedule (catastrophic engine damage), clutch wear on manual transmissions, intercooler hose cracks on twin-turbo models.