Vehicle Segment:
Compact executive sedan, positioned as a premium alternative to mainstream Japanese and American sedans of the era.
Key Competitors:
Acura Integra, Honda Civic Si, Toyota Corolla GT-S, Mazda 323 GTX, Ford Escort GT.
Vehicle Selling Points:
Sporty handling, refined interior, reliable SR20DE engine, available with manual or automatic transmissions, luxurious appointments for its class.
Benefit To Owner:
Enables DIY repairs, saving money on labor costs, and providing a deeper understanding of vehicle maintenance and operation.
Systems Covered Overview:
Comprehensive coverage of all major mechanical, electrical, and body systems for the 1991 Infiniti G20.
Estimated Page Count:
Likely exceeds 1500 pages (typical for OE service manuals of this era).
Manual Format Type:
Official Service and Repair Manual Software
Digital Format:
Online Software/Web-based Access
Engine Mechanical:
Detailed repair procedures for the SR20DE engine, including disassembly, inspection, assembly, timing belt, lubrication system, cooling system, and emissions controls.
Fuel System:
Fuel injection system diagnosis and repair, fuel pump, injectors, pressure regulator, and EVAP system.
Drivetrain:
Front-wheel drive system, including CV axles, differential, and hub bearings.
Transmission:
Coverage for both manual (e.g., RS5F30A) and automatic (e.g., RE4F03A) transmissions, including removal, installation, overhaul, and fluid specifications.
Suspension And Steering:
Front and rear suspension components (struts, control arms, bushings), power steering system diagnosis and repair, steering rack.
Brakes:
Front and rear brake systems, including disc brake component replacement (pads, rotors), hydraulic system diagnostics, ABS (if equipped), parking brake.
Electrical System:
Complete wiring diagrams, lighting systems, starting and charging systems, fuses, relays, and component testing.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system service, including refrigerant handling, compressor, blower motor, and climate controls.
Body And Interior:
Exterior body panel repair, doors, windows, interior trim removal and installation, seat adjustments.
Diagnostic Trouble Codes:
Procedures for reading and interpreting diagnostic trouble codes (DTCs) for engine management and other systems.
Maintenance Procedures:
Regular maintenance tasks such as oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt adjustments.
Repair Procedures:
Detailed step-by-step repair instructions for virtually all mechanical and electrical components.
Troubleshooting Guides:
Systematic diagnostic procedures for identifying and resolving common and uncommon faults.
Depth Of Coverage:
Factory-level technical depth, suitable for professional technicians and experienced DIY enthusiasts. Covers everything from basic maintenance to complete engine and transmission overhauls.
Digital File Type:
Web-based software, accessible via internet browser. Likely utilizes proprietary software from RepairSurge.
Online Content Quality:
High-quality, licensed OE material presentation. Searchable and easily navigable.
Digital Access Type:
Subscription-based access for one year, with options for renewal.
Online Platform Compatibility:
Compatible with PC, laptop, smartphone, and tablet via web browser.
Engine Type:
Inline 4-cylinder, DOHC, 16-valve
Displacement:
1998 cc (2.0 Liters)
Horsepower:
Approx. 140-145 hp @ 6400 rpm (varies slightly by market/spec)
Torque:
Approx. 130-132 lb-ft @ 4800 rpm
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (87 octane recommended)
Standard Transmission Type:
5-speed Manual Transmission (e.g., RS5F30A)
Optional Transmission Type:
4-speed Automatic Transmission (e.g., RE4F03A)
Drive Type:
Front-Wheel Drive (FWD)
Length:
Approx. 176.8 inches (4490 mm)
Width:
Approx. 67.7 inches (1720 mm)
Height:
Approx. 54.5 inches (1385 mm)
Wheelbase:
Approx. 104.3 inches (2650 mm)
Curb Weight:
Approx. 2800-3000 lbs (1270-1360 kg) depending on transmission and trim.
NHTSA Frontal Impact Rating:
N/A (NHTSA testing protocols differed significantly in 1991; specific ratings may not be directly comparable to modern standards.)
ABS:
Anti-lock Braking System (ABS) was often an optional feature on higher trims or specific packages.
Airbags:
Driver-side airbag was standard; passenger airbag was optional or unavailable depending on the market and specific model year update.
Seatbelts:
Three-point seat belts for all outboard seating positions.
Oil Change Interval:
Every 3,750 miles or 3 months (or 7,500 miles/6 months with synthetic oil, consult manual for specifics).
Timing Belt Replacement:
Every 60,000 to 90,000 miles (critical maintenance item for SR20DE to prevent catastrophic engine damage).
Engine Oil Type:
API SG or SH, SAE 5W-30 or 10W-30 (consult manual for temperature-specific recommendations).
Coolant Type:
Nissan Genuine Super Long Life Coolant (or equivalent ethylene glycol-based coolant with de-ionized water, typically a 50/50 mix).
Transmission Fluid Type Auto:
Nissan Genuine Matic D ATF (or Dexron II/III equivalent).
Brake Fluid Type:
DOT 3 Brake Fluid
Common Wear Items:
Front suspension bushings, CV boots, engine mounts, rear brake calipers (sticking), power window regulators, O2 sensor failure.
Engine Specifics:
While the SR20DE is generally robust, carbon buildup on intake valves can occur; timing belt maintenance is crucial.
Infiniti Launch Era:
Infiniti was launched by Nissan in 1989 as its luxury division, aiming to compete with established luxury brands.
G20 First Generation Start:
The Infiniti G20 (P10 chassis) was introduced for the 1991 model year.
G20 Platform Basis:
Based on the Nissan Primera (P10) platform, known for its sporty chassis and handling dynamics.
Manufacturing Location:
Japan
