Vehicle Segment:
Compact MPV / Minivan (JDM)
Jdm Focus:
The Isuzu Geminett II was primarily a Japanese Domestic Market (JDM) vehicle, catering to the unique needs and preferences of the Japanese automotive consumer.
Competitors:
Dominated Japanese domestic market (JDM) compact MPV segment. Competed with vehicles like the Nissan Prairie, Toyota Liteace/Townace, Mitsubishi Space Wagon.
Practicality Versatility:
Designed for families, offering flexible seating arrangements, ample interior space for its size, and practicality for daily use. Often featured sliding rear doors.
Value Proposition:
Known for offering a good balance of features, practicality, and affordability within its segment.
Model Years Covered:
1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
Estimated Pages:
Over 1000 (typical for comprehensive service manuals of this era)
Manual Type:
Factory Service Manual / Repair Manual
Manual Source:
Likely derived from official Isuzu factory service documentation.
Engine Mechanical:
Complete overhaul procedures, component identification, specifications, disassembly, assembly, lubrication, cooling system, fuel system (carburetor/injection), exhaust system, engine management system.
Transmission Drivetrain:
Manual and automatic transmission disassembly, inspection, repair, clutch, driveshafts, differential, axles, transfer case (if applicable).
Suspension Steering:
Front and rear suspension components, shock absorbers, springs, control arms, steering gear, power steering system, wheel alignment specifications.
Brakes:
Hydraulic brake system, disc and drum brake components, master cylinder, wheel cylinders, calipers, brake lines, parking brake system, ABS (if equipped).
Electrical System:
Wiring diagrams, charging system (alternator, battery), starting system, ignition system, lighting, gauges, instrumentation, fuses, relays, power windows, power locks, audio system.
Body Chassis:
Body panel removal and installation, interior trim, exterior trim, doors, windows, bumpers, frame repair (if applicable), corrosion protection.
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair, refrigerant handling, component replacement.
Fuel System:
Includes troubleshooting and repair for fuel pumps, fuel lines, filters, carburetors or EFI components.
Exhaust System:
Component replacement and repair for exhaust manifolds, pipes, mufflers, and catalytic converters.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspections and adjustments, tire rotation and pressure checks.
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting guides, common fault finding procedures for all major systems.
Repair Rebuild:
Detailed step-by-step instructions for the repair and overhaul of virtually all mechanical and electrical components.
Diagnostics:
Procedures for checking system operation, testing components, and diagnosing faults using factory specifications and test equipment.
Engine Tuning:
Includes procedures for setting idle speed, ignition timing (if adjustable), and carburetor adjustment (where applicable).
Component Testing:
Detailed test procedures for specific components using multimeters, pressure gauges, and vacuum testers.
Wheel Alignment:
Specifications and adjustment procedures for front and rear wheel alignment (camber, caster, toe).
Depth Of Coverage:
Comprehensive: Covers from basic adjustments and maintenance to complete engine and transmission rebuilds. Includes detailed diagnostic procedures and specifications required for professional-level repair.
Engine Code Common:
G180Z (1.8L SOHC Inline-4), C22NE (2.2L SOHC Inline-4 - early models might use similar GM engines due to Isuzu's GM ties).
Engine Type:
Inline-4 Cylinder, SOHC
Displacement 1.8L:
1.8 liters (1809 cc)
Horsepower 1.8L Approx:
Approx. 90-100 PS (66-74 kW) at 5,000-5,500 RPM
Torque 1.8L Approx:
Approx. 140-150 Nm (103-111 lb-ft) at 3,000-3,500 RPM
Displacement 2.2L:
2.2 liters (2198 cc)
Horsepower 2.2L Approx:
Approx. 100-115 PS (74-85 kW) at 5,000-5,200 RPM
Torque 2.2L Approx:
Approx. 170-185 Nm (125-136 lb-ft) at 2,800-3,200 RPM
Fuel Delivery:
Carburetor (early models), Electronic Fuel Injection (EFI) (later models).
Fuel Type:
Unleaded Gasoline
Ignition Type:
Electronic Ignition
Safety Standards:
Reflects Japanese safety standards of the late 1980s and early 1990s. Likely no official NCAP ratings available for this specific JDM model.
Braking System:
Front disc brakes, rear drum brakes (standard). Some higher trims might have rear discs.
Steering Assist:
Power steering available on most models.
Seat Belts:
Standard seat belts for all occupants.
Body Structure:
Reinforced body structure with safety cage elements.
Child Seat Anchors:
Likely available on later models, consistent with evolving safety standards.
Oil Change Interval:
Typically every 5,000 - 7,500 km or 6 months, whichever comes first (refer to manual for exact spec).
Spark Plug Replacement:
Every 20,000 - 40,000 km, depending on spark plug type (copper vs. platinum).
Timing Belt Replacement:
Critical: Typically every 80,000 - 100,000 km or 5-7 years. Failure can cause catastrophic engine damage.
Engine Oil Type:
API SG/SH or equivalent, viscosity typically 10W-30 or 10W-40 (check manual for specific engine).
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors. Typically a 50/50 mix with distilled water.
Transmission Fluid Manual:
API GL-4 SAE 75W-90 Gear Oil (for manual transmission).
Transmission Fluid Automatic:
Dexron II or equivalent automatic transmission fluid (ATF).
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Power Steering Fluid:
DEXRON-II or equivalent automatic transmission fluid (ATF) typically used in power steering systems of this era.
Engine Gaskets:
Valve cover gasket and oil pan gasket can leak with age.
Cooling System:
Radiator hoses and water pump seals can degrade, leading to leaks. Thermostat may stick.
Electrical Connectors:
Corrosion on electrical connectors, especially grounds, can cause intermittent issues.
Transmission Clutch:
Clutch wear is a common maintenance item for manual transmissions.
Body Rust:
As with many vehicles of this era, rust can be a concern, particularly in areas prone to road salt and moisture.
