Segment:
Grand Tourer (GT), Sports Coupe
Target Audience:
Enthusiasts seeking a blend of performance, luxury, and advanced technology, often comparing to Japanese rivals like the Toyota Supra and Nissan 300ZX.
Key Competitors:
Nissan 300ZX (Z32), Toyota Supra (Mk3), Chevrolet Corvette (C4)
Distinctive Features:
Available Twin-Turbo engine (not on this 1991 NA model, but part of the broader 3000GT lineage), advanced AWD system, 4-wheel steering, active aerodynamics, Electronic Control Suspension.
Aerodynamics:
Active aero system with electronically controlled front spoiler and rear wing for improved high-speed stability.
Powertrain:
Engine, Fuel, Cooling, Intake and Exhaust, Emission Control, Clutch, Manual Transaxle, Automatic Transaxle, Propeller Shaft, Front Axle, Rear Axle, Power Plant Mount
Chassis:
Wheel and Tire, Front Suspension, Electronic Control Suspension, Rear Suspension, Service Brakes, Parking Brake, Steering, 4-Wheel Steering System
Body And Interior:
Body, Exterior, Interior, Supplemental Restraint System (SRS), Heater, Air Conditioner and Ventilation
Cooling System:
Radiator, fan, water pump, thermostat, coolant flow, pressure testing.
Fuel System:
Fuel pump, injectors, fuel pressure regulator, fuel filter, tank, lines, ECU control.
Exhaust System:
Exhaust manifolds, catalytic converter, mufflers, pipes, O2 sensors.
Interior Components:
Dashboard removal, seat installation/removal, trim panel repair, HVAC system components and controls.
Supplemental Restraint System:
Airbag system components, sensors, warning lights, and safety precautions for handling SRS components.
Diagnostics And Troubleshooting:
Extensive troubleshooting guides, symptom-based diagnostics, diagnostic trouble codes (DTCs) and their meanings (where applicable for the era).
Maintenance:
Routine service, fluid changes, filter replacements, lubrication, inspection procedures.
Repair And Rebuild:
Detailed step-by-step instructions for component disassembly, repair, and reassembly for all major systems.
Electrical Systems:
Wiring diagrams, electrical component testing, diagnosis of electrical faults, starter, charging system, lighting, accessories.
Specification Tables:
Detailed tables for torque specifications, fluid capacities, tolerances, and clearances for all mechanical components.
Troubleshooting Charts:
Systematic charts to diagnose common problems based on symptoms.
Assembly And Disassembly:
Exploded views and step-by-step guides for component removal and installation.
Depth Of Coverage:
Comprehensive, covering everything from basic maintenance to complex engine and transmission overhauls, including electronic control systems specific to the 1991 model.
Electrical Diagrams:
Includes comprehensive wiring diagrams for all vehicle systems, aiding in electrical troubleshooting and component identification.
Engine Type:
60-degree V6, SOHC naturally aspirated
Displacement:
3.0 Liters (2972 cc)
Horsepower:
222 hp @ 6000 rpm (approx.)
Torque:
200 lb-ft @ 4500 rpm (approx.)
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Fuel Type:
Unleaded gasoline, 87 octane minimum
Systems:
Exhaust Gas Recirculation (EGR), Oxygen Sensors, Catalytic Converter
Oil Change:
Every 3,000-5,000 miles or 3-6 months, depending on driving conditions.
Coolant Flush:
Every 2 years or 30,000 miles.
Timing Belt:
Critical: 60,000 - 90,000 miles or 5-7 years. Failure can cause catastrophic engine damage.
Engine Oil:
API SG or higher, SAE 10W-30 recommended (consult manual for specific climate recommendations).
Coolant:
Ethylene glycol-based antifreeze, 50/50 mix with distilled water.
Transmission Fluid Manual:
API GL-4 SAE 75W-90 or 80W-90 gear oil (consult manual for exact specification and capacity).
Transmission Fluid Automatic:
ATF SP-III or equivalent (consult manual for exact specification and capacity).
Brake Fluid:
DOT 3 or DOT 4, depending on specific system requirements (check manual).
Power Steering Fluid:
Dexron II or equivalent ATF (consult manual).
Engine:
Timing belt wear, potential head gasket issues in high mileage examples, oil leaks from valve covers and oil pan.
Suspension:
Wear in bushings and ball joints, especially in the multi-link rear suspension. Electronic Control Suspension (ECS) can develop leaks or sensor faults.
Electronics:
Early models can experience dashboard cluster issues, climate control problems, and power accessory failures due to age and electrical component degradation.
Body:
Rust can be an issue in salt-belt regions, especially around wheel wells and rocker panels. Door mechanisms and window regulators can wear out.
