🏷️ Basic Information Identification Make: Infiniti Model: Q45 Generation: First Generation Chassis Code: G50 Series Production Years: 1991-1996 👋 Introduction Market Position Segment: Full-size Luxury Sedan Target Audience: Discerning luxury car buyers seeking performance and advanced features Competitive Analysis Competitors: Lexus LS 400, Mercedes-Benz S-Class, BMW 7 Series, Cadillac Seville Key Features Vehicle Engine: VQ30DE 3.0L V6 DOHC Performance Focus: Emphasis on smooth power delivery and refined ride Key Features Manual Value Proposition: Empowers owners and mechanics to perform all repairs and maintenance, saving money and ensuring longevity 📋 Manual Details Coverage Manual Type: Complete Service Repair Manual Language: English Page Count: Over 8000 pages Format File Format: PDF File Requirements: Adobe PDF Reader, WinZip Compatibility Operating Systems: All Versions of Windows, Mac, Linux OS, iPhone, iPad, Android Delivery Method: Instant Download 📖 Manual Coverage Systems Covered 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 Procedures Included 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 Technical Depth Level: Comprehensive, from basic maintenance to complete engine rebuilds and advanced diagnostics 📊 Manual Specifications File Quality Completeness: 100% Complete and Intact, no missing/corrupt pages/sections Searchability: Bookmarked and Searchable Usability: Zoomable and Printable Storage Options Download: Instant Download, saves to hard drive Physical Media: Can be burned to CD-ROM ⚙️ Engine Specifications Primary Engine Engine Code: VQ30DE Configuration: 3.0L (2988 cc) V6, 24 valves, DOHC Performance 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) Fuel System Injection Type: Multi-port Fuel Injection (MPFI) Fuel Type: Unleaded Regular Gasoline (87 octane recommended) Cooling System Coolant Type: Nissan Genuine Super Long Life Coolant (50/50 mix) Lubrication Oil Type: SAE 5W-30 (API SG or higher) Timing Drive Type: Timing Chain 🔧 Transmission Standard Transmission Type: 4-speed Automatic Overdrive Transmission Model: RE4R01A Optional Transmission Type: None offered in North America Features Shift Modes: Standard, Snow Mode Fluid Specifications Atf Type: Nissan Matic D (Dexron III equivalent) 📐 Dimensions Exterior Length In: 200.0 Width In: 71.7 Height In: 56.3 Wheelbase In: 113.2 Weights Curb Weight Lbs: 3800 - 4000 (approx.) 🛡️ Safety Features Ratings NHTSA Frontal Impact Driver: Not rated (vehicles of this era often not tested by modern standards) NHTSA Frontal Impact Passenger: Not rated Active Features ABS: Standard Anti-lock Braking System Traction Control: Available (TCS) Passive Features Airbags: Driver and Passenger Airbags Seatbelts: 3-point front and rear seatbelts, pretensioners 💡 Technology Features Infotainment 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) Driver Assistance Cruise Control: Standard electronic cruise control Keyless Entry: Available keyless entry system Connectivity Phone Integration: No factory integrated Bluetooth or smartphone connectivity (period-appropriate) 🔧 Maintenance Service Intervals 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 Fluid Specifications Coolant Capacity Qts: Approx. 8.5 Quarts (with heater) Brake Fluid Type: DOT 3 Known Issues 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 📚 Vehicle History Brand Heritage Infiniti Launch: Infiniti brand launched in 1989 as Nissan's luxury division Model Evolution 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 Production 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,...