Isuzu Trooper UBS 1998-2002 Workshop Repair Service Manual

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🏷️ Basic Information Identification Make: Isuzu Model: Trooper Generation Code: UBS Codes Chassis Code: UBS25, UBS26, UBS55, UBS69 Vin Code Identifier: VIN characters vary by market and specific model year 👋 Introduction Market Position Vehicle Segment: Mid-size SUV / Sport Utility Vehicle Usp Vehicle: Renowned for its ruggedness, off-road capability, and reliability, often compared favorably to body-on-frame competitors. Competitive Analysis Key Competitors: Toyota 4Runner, Jeep Grand Cherokee, Ford Explorer, Nissan Pathfinder, Mitsubishi Montero Key Features Chassis Construction: Body-on-frame construction, providing durability and off-road resilience. Drivetrain Options: Available in 2WD and robust 4WD configurations with low-range transfer case. Suspension Design: Independent front suspension for improved on-road manners and solid rear axle for off-road durability. Interior Flexibility: Spacious interior with flexible seating arrangements, often including a third-row option. Manual Value Proposition: Provides essential, detailed technical information crucial for maintaining and repairing the vehicle, saving on dealership costs and extending vehicle lifespan. 📋 Manual Details Coverage Areas Years Covered: 1998, 1999, 2000, 2001, 2002 Market Coverage: Global (specific regional variations may exist) Page Count Estimated Page Count: Est. 2500+ pages (comprehensive digital format) Manual Type Manual Classification: Workshop Repair Service Manual Language Language: English Format Digital Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, lubrication, cooling, exhaust, engine management (ECU), turbocharging (if applicable) Transmission: Manual transmission, Automatic transmission (including electronic control, torque converter, shift solenoids, fluid management) Drivetrain: 4-Wheel Drive (4WD) system, transfer case (manual and electronic control), front differential, rear differential, driveshafts, CV joints, hubs Suspension: Front independent suspension (IFS), rear solid axle, shock absorbers, springs, control arms, bushings, stabilizer bars, steering knuckle Steering: Power steering system, steering rack/box, steering column, tie rods, power steering pump, fluid lines Brakes: Front disc brakes, rear disc or drum brakes, ABS (Anti-lock Braking System), brake calipers, rotors, pads, brake lines, master cylinder, parking brake system Electrical: 12V battery system, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, multiplexed systems (if applicable) HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system, blower motor, evaporator, condenser, refrigerant lines, controls, cabin air filter Body And Frame: Chassis structure, body panels, doors, hood, tailgate, bumpers, glass, interior trim, seals Body Electronics: Power windows, power door locks, mirrors, alarm system, remote keyless entry, interior lighting, wipers, horn Safety Systems: Airbags (SRS system), seat belts, ABS (detailed diagnostics) Procedures Included Maintenance: Routine inspections, oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake pad replacement, spark plug replacement Troubleshooting: Diagnostic procedures for all major systems, symptom-based troubleshooting, electrical circuit testing, fault code interpretation Repair And Rebuild: Engine overhaul, transmission overhaul, differential rebuild, suspension component replacement, brake system repair, steering component replacement, HVAC system repair, electrical component repair Diagnosis: Detailed diagnostic flowcharts, on-board diagnostic (OBD-II) system information, scan tool usage (for applicable systems) Adjustment: Valve clearance adjustment, clutch adjustment, parking brake adjustment, wheel alignment specifications Installation And Removal: Component removal and installation procedures for all major parts, including engine, transmission, axles, body panels, and interior components Specifications: Torque specifications for all fasteners, clearances, fluid capacities, diagnostic parameters Technical Depth Depth Of Coverage: Comprehensive: Covers basic maintenance to full mechanical and electrical system overhauls and repairs. Diagnostic Tools: Information on using specialized tools and diagnostic equipment for advanced troubleshooting. Wiring Diagrams: Detailed, high-quality electrical wiring diagrams for all vehicle systems, color-coded for clarity. Special Tools: Lists and descriptions of required special tools for specific procedures. 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content for quick information retrieval. Print Quality Printability: Printable pages, allowing for a physical copy of essential sections or the entire manual. Binding Type Binding Type: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code Gasoline: 3.5L V6 (3500) - 6VD1 Engine Displacement Gasoline: 3.5 Liters (3494 cc) Engine Configuration Gasoline: SOHC V6 (60-degree bank angle) Horsepower Gasoline: Approx. 190-215 hp (depending on market and specific tuning) Torque Gasoline: Approx. 220-230 lb-ft (depending on market and specific tuning) Alternative Engine Diesel Engine Code Diesel: 3.0L Turbo Diesel (4JX1) Engine Displacement Diesel: 3.0 Liters (2999 cc) Engine Configuration Diesel: DOHC Inline 4-cylinder (with Turbocharger and Intercooler) Horsepower Diesel: Approx. 160 hp Torque Diesel: Approx. 260-280 lb-ft Fuel System Fuel Delivery Gasoline: Electronic Fuel Injection (EFI) - Sequential Port Injection Fuel Type Gasoline: Unleaded gasoline (Octane rating as per market specification) Fuel Delivery Diesel: Direct Injection, Common Rail (CRDI) with Turbocharger Fuel Type Diesel: Diesel fuel Performance 0 To 60 Mph Gasoline: Approx. 9-10 seconds (varies with configuration) 🔧 Transmission Standard Standard Transmission Type: 5-speed Manual Transmission Optional Optional Transmission Type: 4-speed Automatic Transmission (with electronically controlled overdrive) Features Transfer Case Type: Part-time 4WD with 2-speed transfer case (lever-operated) or full-time 4WD with viscous coupling center differential (on some models/markets). Automatic Transmission Modes: Includes Power and Hold...

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Sku: 373090

Collections: ALL Isuzu

Availability: In stock

Tags: 1998 1999 2000 2001 2002 Cars Isuzu Misc Trooper Truck UBS

Product variants

Description

🏷️ Basic Information

Identification

Make:

Isuzu

Model:

Trooper

Generation Code:

Codes

Chassis Code:

UBS25, UBS26, UBS55, UBS69

Vin Code Identifier:

VIN characters vary by market and specific model year

👋 Introduction

Market Position

Vehicle Segment:

Mid-size SUV / Sport Utility Vehicle

Usp Vehicle:

Renowned for its ruggedness, off-road capability, and reliability, often compared favorably to body-on-frame competitors.

Competitive Analysis

Key Competitors:

Toyota 4Runner, Jeep Grand Cherokee, Ford Explorer, Nissan Pathfinder, Mitsubishi Montero

Key Features

Chassis Construction:

Body-on-frame construction, providing durability and off-road resilience.

Drivetrain Options:

Available in 2WD and robust 4WD configurations with low-range transfer case.

Suspension Design:

Independent front suspension for improved on-road manners and solid rear axle for off-road durability.

Interior Flexibility:

Spacious interior with flexible seating arrangements, often including a third-row option.

Manual Value Proposition:

Provides essential, detailed technical information crucial for maintaining and repairing the vehicle, saving on dealership costs and extending vehicle lifespan.

📋 Manual Details

Coverage Areas

Years Covered:

1998, 1999, 2000, 2001, 2002

Market Coverage:

Global (specific regional variations may exist)

Page Count

Estimated Page Count:

Est. 2500+ pages (comprehensive digital format)

Manual Type

Manual Classification:

Workshop Repair Service Manual

Language

Language:

English

Format

Digital Format:

PDF Download

📖 Manual Coverage

Systems Covered

Powertrain:

Engine mechanical, fuel system, ignition system, lubrication, cooling, exhaust, engine management (ECU), turbocharging (if applicable)

Transmission:

Manual transmission, Automatic transmission (including electronic control, torque converter, shift solenoids, fluid management)

Drivetrain:

4-Wheel Drive (4WD) system, transfer case (manual and electronic control), front differential, rear differential, driveshafts, CV joints, hubs

Suspension:

Front independent suspension (IFS), rear solid axle, shock absorbers, springs, control arms, bushings, stabilizer bars, steering knuckle

Steering:

Power steering system, steering rack/box, steering column, tie rods, power steering pump, fluid lines

Brakes:

Front disc brakes, rear disc or drum brakes, ABS (Anti-lock Braking System), brake calipers, rotors, pads, brake lines, master cylinder, parking brake system

Electrical:

12V battery system, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, multiplexed systems (if applicable)

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system, blower motor, evaporator, condenser, refrigerant lines, controls, cabin air filter

Body And Frame:

Chassis structure, body panels, doors, hood, tailgate, bumpers, glass, interior trim, seals

Body Electronics:

Power windows, power door locks, mirrors, alarm system, remote keyless entry, interior lighting, wipers, horn

Safety Systems:

Airbags (SRS system), seat belts, ABS (detailed diagnostics)

Procedures Included

Maintenance:

Routine inspections, oil changes, filter replacements, fluid checks and top-offs, tire rotation, brake pad replacement, spark plug replacement

Troubleshooting:

Diagnostic procedures for all major systems, symptom-based troubleshooting, electrical circuit testing, fault code interpretation

Repair And Rebuild:

Engine overhaul, transmission overhaul, differential rebuild, suspension component replacement, brake system repair, steering component replacement, HVAC system repair, electrical component repair

Diagnosis:

Detailed diagnostic flowcharts, on-board diagnostic (OBD-II) system information, scan tool usage (for applicable systems)

Adjustment:

Valve clearance adjustment, clutch adjustment, parking brake adjustment, wheel alignment specifications

Installation And Removal:

Component removal and installation procedures for all major parts, including engine, transmission, axles, body panels, and interior components

Specifications:

Torque specifications for all fasteners, clearances, fluid capacities, diagnostic parameters

Technical Depth

Depth Of Coverage:

Comprehensive: Covers basic maintenance to full mechanical and electrical system overhauls and repairs.

Diagnostic Tools:

Information on using specialized tools and diagnostic equipment for advanced troubleshooting.

Wiring Diagrams:

Detailed, high-quality electrical wiring diagrams for all vehicle systems, color-coded for clarity.

Special Tools:

Lists and descriptions of required special tools for specific procedures.

📊 Manual Specifications

File Format

File Type:

Searchability:

Searchable text content for quick information retrieval.

Print Quality

Printability:

Printable pages, allowing for a physical copy of essential sections or the entire manual.

Binding Type

Binding Type:

N/A (Digital PDF)

Paper Type

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Primary Engine

Engine Code Gasoline:

3.5L V6 (3500) - 6VD1

Engine Displacement Gasoline:

3.5 Liters (3494 cc)

Engine Configuration Gasoline:

SOHC V6 (60-degree bank angle)

Horsepower Gasoline:

Approx. 190-215 hp (depending on market and specific tuning)

Torque Gasoline:

Approx. 220-230 lb-ft (depending on market and specific tuning)

Alternative Engine Diesel

Engine Code Diesel:

3.0L Turbo Diesel (4JX1)

Engine Displacement Diesel:

3.0 Liters (2999 cc)

Engine Configuration Diesel:

DOHC Inline 4-cylinder (with Turbocharger and Intercooler)

Horsepower Diesel:

Approx. 160 hp

Torque Diesel:

Approx. 260-280 lb-ft

Fuel System

Fuel Delivery Gasoline:

Electronic Fuel Injection (EFI) - Sequential Port Injection

Fuel Type Gasoline:

Unleaded gasoline (Octane rating as per market specification)

Fuel Delivery Diesel:

Direct Injection, Common Rail (CRDI) with Turbocharger

Fuel Type Diesel:

Diesel fuel

Performance

0 To 60 Mph Gasoline:

Approx. 9-10 seconds (varies with configuration)

🔧 Transmission

Standard

Standard Transmission Type:

5-speed Manual Transmission

Optional

Optional Transmission Type:

4-speed Automatic Transmission (with electronically controlled overdrive)

Features

Transfer Case Type:

Part-time 4WD with 2-speed transfer case (lever-operated) or full-time 4WD with viscous coupling center differential (on some models/markets).

Automatic Transmission Modes:

Includes Power and Hold modes for enhanced control.

📐 Dimensions

Exterior

Wheelbase:

108.7 inches (2760 mm)

Length:

Approx. 188.8 inches (4795 mm)

Width:

Approx. 77.6 inches (1970 mm)

Height:

Approx. 73.0 inches (1855 mm)

Weights

Curb Weight:

Approx. 4,300 - 4,700 lbs (1950 - 2130 kg) depending on configuration

Gross Vehicle Weight Rating Gvw:

Approx. 5,800 - 6,200 lbs (2630 - 2810 kg)

Cargo

Cargo Volume Behind Second Row:

Approx. 43.0 cubic feet

Cargo Volume Behind First Row:

Approx. 90.0 cubic feet

🛡️ Safety Features

Ratings

NHTSA Frontal Impact Driver:

★★★★ (4-star rating for frontal impact driver in some years)

NHTSA Frontal Impact Passenger:

★★★★ (4-star rating for frontal impact passenger in some years)

IIHS Side Impact:

Acceptable to Good (varying by year and specific test configuration)

Active Features

Standard Anti-lock Braking System (ABS) on all wheels for models of this era.

Traction Control:

Available Traction Control System (TCS) on some higher trims/later models.

Limited Slip Differential:

Optional limited-slip differential (LSD) for the rear axle on some 4WD models for enhanced traction.

Passive Features

Airbags:

Dual front airbags (driver and passenger) standard. Side airbags were not common for this generation.

Seat Belts:

Three-point seat belts for all seating positions, including pretensioners for front seats.

Rollover Protection:

Designed with a relatively low center of gravity for its class, but as with any SUV, driver awareness is key.

💡 Technology Features

Infotainment

Audio System:

Factory AM/FM/CD or Cassette stereo systems, often with premium speaker options.

Navigation:

Optional factory navigation systems were available on higher trims in later years of this generation, typically involving a bulky dash-mounted screen.

Driver Assistance

Cruise Control:

Standard electronic cruise control.

Parking Sensors:

Not typically available for this model year.

Connectivity

Auxiliary Inputs:

No standard auxiliary audio inputs (e.g., 3.5mm jack or USB) – aftermarket solutions often required.

Keyless Entry:

Optional remote keyless entry system.

🔧 Maintenance

Service Intervals

Oil Change Interval Gasoline:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Oil Change Interval Diesel:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Air Filter Replacement:

Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km).

Spark Plug Replacement Gasoline:

Every 60,000 miles (96,000 km) for platinum-tipped plugs.

Transmission Fluid Change Automatic:

Every 30,000 - 50,000 miles (48,000 - 80,000 km), depending on driving conditions. The manual specifies inspection and replacement intervals.

Transmission Fluid Change Manual:

Every 50,000 - 75,000 miles (80,000 - 120,000 km).

Transfer Case Fluid Change:

Every 30,000 - 50,000 miles (48,000 - 80,000 km).

Differential Fluid Change:

Every 30,000 - 50,000 miles (48,000 - 80,000 km).

Fluid Specifications

Engine Oil Gasoline:

API SG or SH, SAE 5W-30 or 10W-30 (refer to owner's manual for specific viscosity based on temperature).

Engine Oil Diesel:

API CF-4 or CG-4, SAE 15W-40 or 5W-40 (synthetic for cold climates). Specific Isuzu spec is vital.

Coolant:

Isuzu Long Life Coolant (or equivalent) - ethylene glycol-based, typically a 50/50 mix with distilled water.

Automatic Transmission Fluid Atf:

Dexron III or equivalent.

Manual Transmission Fluid Mtf:

API GL-4, SAE 75W-90.

Power Steering Fluid:

DEXRON-II or equivalent (check specific recommendations).

Brake Fluid:

DOT 3 or DOT 4.

Known Issues

Common Issues Diesel:

Early 4JX1 diesel engines (particularly pre-2000) could experience injector issues, head gasket failures, and turbocharger problems if not maintained rigorously. The manual provides diagnostic steps for these.

Common Issues Gasoline:

V6 6VD1 can experience intake manifold gasket leaks, spark plug blow-out (requiring inserts), and potential oil leaks from valve covers or oil pan.

Common Issues Suspension:

Wear in ball joints, control arm bushings, and tie rod ends, leading to steering looseness and tire wear. Rear shock absorber leaks.

Common Issues Electrical:

Corrosion on electrical connectors, particularly in damp environments. Window regulator failures, power lock actuator issues.

Common Issues HVAC:

Blend door actuator failures within the HVAC system, blower motor resistor failure.

📚 Vehicle History

Brand Heritage

Isuzu History:

Isuzu Motors is a Japanese commercial vehicle and diesel engine manufacturing company, historically known for rugged, reliable vehicles, including trucks and SUVs.

Model Evolution

Trooper Generation Ubs:

The UBS generation (also known as second generation Trooper) was introduced in 1991 and received a significant facelift and powertrain updates in 1998 for the North American market, leading into the model years covered by this manual.

Design Changes 1998 Update:

The 1998 update introduced a smoother exterior design, a more refined interior, and crucially, the powerful 3.5L V6 engine (6VD1) and the advanced 3.0L Turbo Diesel (4JX1) in many markets.

Production

Production Period Ubs:

1991-2002

Manufacturing Locations:

Primarily manufactured in Japan by Isuzu, with some assembly or versions potentially handled in other global markets.

Sales Performance:

The Trooper was a strong performer in the SUV market during its production run, known for its utility and durability.

🏆 Awards & Recognition

Recognitions

Motor Trend SUV Of The Year:

Isuzu Trooper was awarded MotorTrend's SUV of the Year in 1992.

Ratings

Consumer Reports Reliability:

Generally rated as average to above-average reliability in its class by consumer organizations, though specific model years and powertrains can vary.

Certifications

Emisiones Compliance:

Complies with EPA and CARB emissions standards for its respective model years, with detailed procedures in the manual for emissions-related diagnostics and repairs.