Era:
Early 1990s Japanese sports car, competitor to cars like Nissan 300ZX, Toyota Supra, and Mazda RX-7.
Segment:
Grand Tourer (GT) sports car, featuring advanced technology and performance for its time.
Features Vs Competitors:
The 3000GT offered advanced features like All-Wheel Drive (AWD), Active Aerodynamics, and Electronically Controlled Suspension (ECS) on certain trims, setting it apart from some rivals.
Aerodynamics:
Active front and rear spoilers (on certain models) for optimized downforce at different speeds.
Handling:
Available Full-Time Four-Wheel Drive (4WD) and All-Wheel Steering (AWS) for enhanced grip and agility.
Powertrain:
Powerful 3.0L V6 engine, with a twin-turbocharged variant offering significant horsepower gains.
Primary Coverage:
Complete service and repair for the 1991 Mitsubishi 3000GT.
Engine Coverage:
6G72 3.0L V6, including twin-turbo variants if applicable to 1991 US market models.
Drivetrain Coverage:
Manual and Automatic Transaxle, Clutch, Propeller Shaft, Front Axle, Rear Axle.
Chassis Coverage:
Wheel and Tire, Power Plant Mount.
System Coverage:
Fuel, Cooling, Intake and Exhaust, Emission Control.
Type:
Factory Service Manual (FSM)
Engine Mechanical:
Engine overhaul, cylinder head, piston and connecting rod, crankshaft, camshaft, timing belt, lubrication system.
Fuel System:
Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, fuel lines.
Cooling System:
Radiator, water pump, thermostat, cooling fan, coolant hoses, heater core.
Intake Exhaust:
Intake manifold, exhaust manifold, catalytic converter, muffler, exhaust pipes.
Emission Control:
EGR system, EVAP system, PCV system, O2 sensors.
Clutch System:
Clutch disc, pressure plate, release bearing, clutch master cylinder, clutch slave cylinder, hydraulic lines.
Manual Transmission:
Gearbox overhaul, gears, synchros, shift forks, internal components, shift linkage.
Automatic Transmission:
Transmission overhaul, torque converter, planetary gear sets, valve body, electronic controls (if applicable).
Drivetrain Axles:
Front and rear axle assemblies, CV joints, differential, drive shafts.
Wheels Tires:
Wheel bearing replacement, tire pressure, wheel alignment specifications.
Steering Suspension:
Power steering system, suspension components (struts, control arms, ball joints), steering rack.
Braking System:
Brake fluid, master cylinder, brake calipers, brake pads, brake rotors, ABS system (if equipped).
Electrical System:
Battery, alternator, starter motor, ignition system, lighting system, wiring diagrams, fuses, relays.
HVAC System:
Air conditioning, heating, ventilation, climate control components.
Body Interior:
Body panel removal, interior trim, seats, door mechanisms, glass replacement.
Maintenance Procedures:
Oil changes, filter replacements, spark plug replacement, coolant flushes, brake fluid changes, belt replacements.
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting, common fault finding for all major systems.
Repair Procedures:
Detailed step-by-step instructions for component removal, repair, and reinstallation.
Overhaul Procedures:
Comprehensive guides for engine, transmission, and differential rebuilds.
Diagnostic Procedures:
Guidance on using diagnostic tools, reading trouble codes, and performing system checks.
Wiring Diagrams:
Complete and detailed electrical wiring schematics for all vehicle systems.
Depth:
Expert level, covering everything from routine maintenance to complete engine and transmission rebuilds, including advanced diagnostics and specifications.
Oil Change Interval:
Every 5,000 miles or 6 months (or consult manual for specific severe/normal conditions).
Timing Belt Replacement:
Typically every 60,000-90,000 miles or 5-7 years for the 6G72 engine. Critical to follow manual's recommendation.
Spark Plug Replacement:
Refer to manual; typically 30,000-60,000 miles depending on plug type.
Engine Oil Type:
API SG or SH, SAE 10W-30 or 10W-40 (Consult manual for exact viscosity and capacity).
Coolant Type:
Mitsubishi Super Long Life Coolant (or equivalent ethylene glycol-based coolant with demineralized water).
Brake Fluid Type:
DOT 3 or DOT 4 (Check manual for specific requirement).
Engine Reliability:
Timing belt failure can cause catastrophic engine damage if not replaced on schedule. Early models sometimes had issues with the active aerodynamics and ECS systems.
Turbo Issues:
Oil seals and wastegates on twin-turbo models can be prone to wear over time, affecting boost pressure.
Transmission Issues:
Clutch wear is common with spirited driving. Automatic transmissions can develop issues with solenoid packs or valve bodies.
Oil Filter Example:
MD095778 (Original Mitsubishi, cross-reference with aftermarket brands like Fram PH2, Wix 51042, K&N HP-3001)