Segment:
Full-size Luxury Sedan
Target Audience:
Discerning luxury car buyers seeking performance and advanced features
Competitors:
Lexus LS 400, Mercedes-Benz S-Class, BMW 7 Series, Cadillac Seville
Engine:
VQ30DE 3.0L V6 DOHC
Performance Focus:
Emphasis on smooth power delivery and refined ride
Value Proposition:
Empowers owners and mechanics to perform all repairs and maintenance, saving money and ensuring longevity
Engine Mechanical:
Complete overhaul and repair procedures
Engine Lubrication Cooling:
Oil pump, radiator, water pump, thermostat, oil cooler
Engine Fuel Emission:
Fuel injection system (DFI), injectors, fuel pump, EVAP system, EGR
Accelerator Fuel Exhaust:
Throttle body, intake manifold, exhaust system, catalytic converter
Automatic Transmission:
Disassembly, assembly, torque converter, valve body, electronic controls
Drivetrain:
Propeller shaft, universal joints, differential carrier, axle shafts
Front Suspension:
Control arms, ball joints, struts, springs, steering knuckles
Rear Suspension:
Multi-link independent suspension, control arms, shocks, springs
Brake System:
ABS, hydraulic components, disc brakes, parking brake
Steering System:
Power steering, rack and pinion, steering column, tie rods
Body:
Exterior panels, interior trim, glass, doors, body repair
HVAC:
Air conditioning, heater core, blower motor, climate control system
Electrical System:
Wiring schematics, lighting, charging system, starting system, fuses, relays
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspections
Diagnostics:
Troubleshooting, fault codes, diagnostic procedures for all systems
Repair:
Step-by-step repair instructions for all components
Rebuild Refurbish Restore:
Detailed procedures for major component overhauls
Level:
Comprehensive, from basic maintenance to complete engine rebuilds and advanced diagnostics
Configuration:
3.0L (2988 cc) V6, 24 valves, DOHC
Horsepower Hp:
222 hp @ 6400 rpm (early models), 240 hp @ 6400 rpm (later models)
Torque Lb Ft:
262 lb-ft @ 4800 rpm (early models), 270 lb-ft @ 4800 rpm (later models)
Injection Type:
Multi-port Fuel Injection (MPFI)
Fuel Type:
Unleaded Regular Gasoline (87 octane recommended)
Coolant Type:
Nissan Genuine Super Long Life Coolant (50/50 mix)
Oil Type:
SAE 5W-30 (API SG or higher)
NHTSA Frontal Impact Driver:
Not rated (vehicles of this era often not tested by modern standards)
NHTSA Frontal Impact Passenger:
Not rated
ABS:
Standard Anti-lock Braking System
Traction Control:
Available (TCS)
Airbags:
Driver and Passenger Airbags
Seatbelts:
3-point front and rear seatbelts, pretensioners
Audio System:
Bose premium audio system (optional/standard on higher trims)
Display:
Center console display for climate, audio, and vehicle information (optional navigation system available)
Cruise Control:
Standard electronic cruise control
Keyless Entry:
Available keyless entry system
Phone Integration:
No factory integrated Bluetooth or smartphone connectivity (period-appropriate)
Oil Change:
Every 5,000 miles or 6 months, whichever comes first
Air Filter:
Inspect every 15,000 miles, replace as needed
Transmission Fluid:
Inspect every 30,000 miles, change every 60,000 miles or as recommended by manual
Coolant Capacity Qts:
Approx. 8.5 Quarts (with heater)
Vlsd Failure:
Viscous Limited Slip Differential (VLSD) can degrade over time, leading to chattering or reduced effectiveness
Coil On Plug Failure:
Ignition coils can fail, causing misfires (though this generation primarily uses spark plug wires)
E60 Catalytic Converter:
Early models may experience premature catalytic converter failure
Suspension Wear:
Bushings and ball joints can wear, leading to noise and steering issues
Infiniti Launch:
Infiniti brand launched in 1989 as Nissan's luxury division
Q45 Introduction:
Introduced for the 1990 model year (as a 1990 model) to compete in the luxury sedan market
G50 Generation:
First generation (G50) ran from 1990 to 1996, with minor updates
Manufacturing Location:
Japan (primarily Tochigi Plant)
Key Changes 1991:
Minor refinements, potential minor horsepower increase (depending on market spec)
Key Changes 1994:
Significant facelift: revised grille, headlights, taillights, interior updates, and a horsepower increase to 240 hp
