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Isuzu

Isuzu Trooper 1991 Workshop Service Repair Manual

Isuzu Trooper 1991 Workshop Service Repair Manual

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Vehicle data plateRef 400337
Brand
Isuzu
Vehicle
Car
Models covered
Engines, N Series, Trooper
Years
1991
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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  • Download link opens on the order page immediately
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๐Ÿท๏ธ Basic Information
Identification
Make:
Isuzu
Model:
Trooper
Year:
1991
Codes
Chassis Code:
UBS/WS
๐Ÿ‘‹ Introduction
Market Position
Segment:
Compact/Mid-size SUV (Sport Utility Vehicle)
Competitive Analysis
Key Competitors:
Jeep Cherokee, Toyota 4Runner, Nissan Pathfinder, Ford Bronco II, Mitsubishi Montero
Key Features
Unique Selling Points:
Rugged body-on-frame construction, capable 4WD system, spacious interior for its class, reliable Isuzu diesel engine options (in many markets)
Target Audience
Users:
DIY enthusiasts, professional mechanics, owners seeking to maintain and repair their vehicle
๐Ÿ“‹ Manual Details
Coverage Areas
Covered Regions:
Global (factory original specifications apply)
Page Count
Estimated Pages:
Hundreds (specific count not provided, but described as extensive)
Manual Type
Type:
Workshop Service Repair Manual (Full Factory)
Language
Language:
English
Format
Format:
PDF (Downloadable)
๐Ÿ“– Manual Coverage
Systems Covered
Powertrain:
Engine mechanical, engine electrical, fuel system, exhaust system, cooling system, lubrication system
Drivetrain:
Transmission (manual and automatic), transfer case, drive shafts, axles, differentials
Suspension Steering:
Front suspension, rear suspension, steering system, power steering
Brakes:
Brake system components, hydraulic lines, parking brake, ABS (if equipped)
Electrical:
Lighting system, ignition system, starting system, charging system, instrument panel, power windows, power locks, audio system, wiring diagrams
Body Chassis:
Body construction, interior trim, exterior trim, bumpers, doors, hood, tailgate, glass
Procedures Included
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication
Repair:
Engine rebuild, transmission overhaul, brake caliper replacement, suspension component replacement, electrical component repair
Troubleshooting:
Diagnostic procedures for common and complex faults across all systems, including electrical diagnostics
Specifications:
Torque specifications, clearances, fluid capacities, pressures, electrical resistance values
Technical Depth
Depth:
Complete disassembly and reassembly of all major vehicle components, detailed diagnostic trees, in-depth electrical troubleshooting
๐Ÿ“Š Manual Specifications
File Format
Format:
PDF
Print Quality
Printability:
Printable without restriction (full or partial)
Binding Type
Binding:
Digital (Downloadable PDF)
Paper Type
Physical Medium:
N/A (Digital delivery)
Software Requirements
Reader:
Adobe PDF Reader
โš™๏ธ Engine Specifications
Primary Engine
Engine Type 1:
2.6L (2559cc) SOHC Inline-4 Petrol
Engine Code 1:
4ZE1
Power Hp 1:
Approx. 120 hp @ 5000 rpm (US Spec)
Torque Lb-Ft 1:
Approx. 140 lb-ft @ 2800 rpm (US Spec)
Optional Engine
Engine Type 2:
2.8L (2826cc) Naturally Aspirated Diesel Inline-4 (Turbocharged in some markets)
Engine Code 2:
4JB1-T (Turbocharged Diesel)
Fuel System
Fuel Delivery:
Fuel Injection (MPI for Petrol)
Performance
Compression Ratio Petrol:
8.6:1 (Approx.)
๐Ÿ”ง Transmission
Standard
Transmission Type 1:
5-Speed Manual
Optional
Transmission Type 2:
4-Speed Automatic
Features
Drivetrain Options:
2WD (Rear Wheel Drive), 4WD (Part-time with 2-speed transfer case)
Fluid Specifications
Manual Transmission Fluid:
API GL-4, SAE 75W-90 (Consult manual for exact specs and capacity)
Automatic Transmission Fluid:
Dexron III / MERCON compatible (Consult manual for exact specs and capacity)
๐Ÿ“ Dimensions
Exterior
Wheelbase:
2760 mm (108.7 in)
Length:
4560 mm (179.5 in)
Width:
1735 mm (68.3 in)
Height:
1670 mm (65.7 in) (Approx., varies with trim)
Weights
Curb Weight:
1700-1900 kg (Approx., varies with configuration)
Towing Capacity:
Up to 5000 lbs (Consult vehicle specific rating)
๐Ÿ›ก๏ธ Safety Features
Ratings
NHTSA Overall Rating 1991:
Not explicitly rated by NHTSA in a comparable format to modern standards.
Active Features
ABS:
Optional (Rear-wheel ABS common)
Passive Features
Airbags:
Driver airbag standard on many models by 1991, passenger airbag optional or unavailable.
Seatbelts:
3-point front seatbelts, 2-point rear lap belts (3-point rear optional/market dependent)
๐Ÿ’ก Technology Features
Infotainment
Audio System:
Factory AM/FM stereo with cassette player, optional CD player on higher trims.
Driver Assistance
Cruise Control:
Optional
Connectivity
Power Features:
Power windows, power door locks, power mirrors were available options on various trims.
Climate Control
HVAC:
Manual air conditioning and heating standard on most models, automatic climate control not typical for this era.
๐Ÿ”ง Maintenance
Service Intervals
Oil Change Interval:
Every 5,000 miles or 6 months (Consult manual for specific engine and oil type)
Air Filter Replacement:
Every 15,000 - 30,000 miles or annually (or as needed based on driving conditions)
Spark Plug Replacement Petrol:
Approx. 30,000 - 60,000 miles (Depending on spark plug type)
Fluid Specifications
Engine Oil Spec:
API SG or SH, SAE 10W-30 or 10W-40 (Check manual for viscosity based on climate)
Coolant Type:
Ethylene Glycol based antifreeze (Green) with water, 50/50 mix (Consult manual for specific type and capacity)
Brake Fluid Type:
DOT 3
Known Issues
Common Wear Items:
Ball joints, tie rod ends, wheel bearings, exhaust system corrosion, fuel injectors (petrol), glow plugs (diesel), coolant leaks (heater core, hoses)
Transfer Case Issues:
Potential for wear in the transfer case shifting mechanism or chain slack.
Rust Prone Areas:
Fender wells, rocker panels, chassis frame (especially in areas with road salt).
๐Ÿ“š Vehicle History
Brand Heritage
Isuzu Origins:
Founded in 1916, Isuzu Motors is a Japanese commercial vehicle and diesel engine manufacturer.
Model Evolution
First Generation Start:
First generation (Isuzu Rodeo / Trooper) debuted in 1981 globally.
Second Generation Introduction:
The 1991 model year represents the introduction of the second generation Isuzu Trooper (UBS).
Design Changes 2Nd Gen:
Features a more aerodynamic, rounded body style compared to the first generation, with independent front suspension on some models.
Production
Manufacturing Locations:
Primarily Japan (Fuji Heavy Industries), with assembly in other countries (e.g., US by GM)
๐Ÿ† Awards & Recognition
Recognitions
Offroad Capability Awards:
Often recognized for its robust off-road capabilities and durability in enthusiast circles, though specific formal awards are less documented for this period.

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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