🏷️ Basic Information

Make:

Isuzu

Model:

Pick-ups

Year:

1989

Product Name:

Isuzu Pick-ups 1989 Repair Service Manual

Product Format Description:

Service Manual Repair PDF Download

👋 Introduction

Market Position:

A robust and reliable compact pickup truck, popular for utility, light commercial use, and off-road capability, especially in 4WD configurations.

Key Competitors 1989:

Toyota Pickup, Nissan Hardbody, Mazda B-Series, Ford Ranger, Chevrolet S-10/GMC Sonoma.

Vehicle Strengths:

Durability, proven Isuzu diesel engine options, capable 4WD systems, practical utility, relatively simple mechanicals.

📋 Manual Details

Target Audience:

Primarily professional technicians, with adequate data for DIY enthusiasts.

Estimated Page Count:

Refer to actual product listing for precise count; typical comprehensive service manuals of this era range from 800-1500 pages.

Manual Type:

Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Systems:

Engine mechanical (assembly, disassembly, overhaul), fuel system (carburetor/injection, pumps, lines), ignition system, cooling system, lubrication system, emission control systems.

Drivetrain Systems:

Manual transmission, automatic transmission, transfer case (4WD models), clutch, driveshafts, differentials, axles.

Chassis Systems:

Suspension (front and rear independent/solid axle configurations), steering system (power/manual), braking system (disc/drum configurations, hydraulic components, parking brake).

Electrical Systems:

Wiring diagrams, charging system (alternator, battery), starting system (starter motor), lighting system, ignition system, instrumentation, power accessories, body control modules (basic).

Body And Interior:

Body construction, exterior trim, doors, windows, seats, upholstery, HVAC system (heating, ventilation, air conditioning), body panel repair, corrosion prevention.

Maintenance Procedures:

Scheduled maintenance (oil changes, filter replacements, fluid checks), lubrication points, belt tensioning, spark plug replacement, battery maintenance.

Repair Procedures:

Engine overhauls, transmission repair, brake caliper and master cylinder replacement, suspension component replacement (shocks, ball joints), steering rack repair, exhaust system repair, fuel system component replacement.

Troubleshooting Guidelines:

Diagnostic charts, symptom-based troubleshooting, common fault identification for engine, transmission, electrical, and chassis systems.

Diagnostic Techniques:

Basic electrical diagnostics, mechanical testing procedures (compression tests, leak-down tests), visual inspection guidelines.

Depth Of Coverage:

Comprehensive, covering basic to advanced repair and overhaul procedures. Suitable for full vehicle teardowns and rebuilds.

📊 Manual Specifications

File Format:

PDF

Print Quality:

Likely high-quality digital reproduction of original factory manual; should support clear printing of diagrams and text.

Binding Type:

Not applicable (digital download)

Paper Type:

Not applicable (digital download)

⚙️ Engine Specifications

Engine Options Gasoline:

2.3L (4ZD1) I4, 2.6L (4ZE1) I4.

Engine Options Diesel:

2.2L (C223) Diesel I4, 2.7L (4JB1) Turbo Diesel I4 (depending on market and trim).

Displacement 2.3L:

2253 cc

Horsepower 2.3L:

Approx. 100-110 hp @ 4600-4800 rpm (varies by market and fuel delivery).

Torque 2.3L:

Approx. 125-135 lb-ft @ 2600-3000 rpm (varies by market and fuel delivery).

Displacement 2.6L:

2559 cc

Horsepower 2.6L:

Approx. 110-120 hp @ 4800-5000 rpm (fuel injected).

Torque 2.6L:

Approx. 140-150 lb-ft @ 2500-3000 rpm (fuel injected).

Displacement Diesel 2.2L:

2200 cc

Horsepower Diesel 2.2L:

Approx. 60-70 hp @ 4300 rpm (Naturally Aspirated).

Torque Diesel 2.2L:

Approx. 90-100 lb-ft @ 2400 rpm (Naturally Aspirated).

Displacement Diesel 2.7L:

2697 cc

Horsepower Diesel 2.7L:

Approx. 95-105 hp @ 3800-4000 rpm (Turbocharged).

Torque Diesel 2.7L:

Approx. 140-150 lb-ft @ 2000-2500 rpm (Turbocharged).

Fuel System Gasoline:

Carbureted (2.3L) or Electronic Fuel Injection (EFI) (2.6L).

Fuel System Diesel:

Indirect Injection (IDI) with rotary or inline fuel injection pumps.

Ignition Type:

Distributor-based ignition system with electronic control (on EFI models).

Cooling Type:

Pressurized liquid cooling system with engine-driven fan or clutch fan.

Oil Capacity Gasoline:

Approx. 4.5-5.5 quarts (4.3-5.2 liters) with filter, check manual for exact specification.

Oil Capacity Diesel:

Approx. 6-7 quarts (5.7-6.6 liters) with filter, check manual for exact specification.

🔧 Transmission

Standard Transmission Type:

5-speed manual transmission.

Optional Transmission Type:

3-speed or 4-speed automatic transmission (market dependent).

Drivetrain Options:

Rear-wheel drive (RWD) and Four-wheel drive (4WD) with manual or automatic locking front hubs.

Transfer Case Type 4Wd:

Manual engagement transfer case with 2H, 4H, and 4L (Low Range) settings.

Clutch Type:

Dry single-plate clutch (manual transmission).

Manual Transmission Fluid Spec:

API GL-4 SAE 75W-90 or SAE 80W-90 gear oil. Check manual for exact grade.

Automatic Transmission Fluid Spec:

Dexron II or equivalent (DEXRON III may be backwards compatible but consult manual).

📐 Dimensions

Wheelbase Short Bed:

Approx. 104.3 inches (2649 mm).

Wheelbase Long Bed:

Approx. 118.1 inches (3000 mm).

Overall Length:

Varies by bed length and cab configuration (e.g., 178-200 inches).

Bed Length Short:

Approx. 6 feet (72 inches).

Bed Length Long:

Approx. 7 feet (84 inches).

Curb Weight:

Approx. 2700-3500 lbs (1225-1588 kg) depending on configuration.

Payload Capacity:

Approx. 1000-1600 lbs (454-726 kg) depending on configuration.

Towing Capacity:

Approx. 3500-5000 lbs (1588-2268 kg) depending on engine and configuration. Consult owner's manual for specific ratings.

🛡️ Safety Features

NHTSA Ratings 1989:

Specific NHTSA crash test data for this model year may be limited or unavailable; typically focused on frontal impact. Refer to official NHTSA archives if available.

Active Safety Features:

Rear-wheel anti-lock braking system (RWAL) available on some models/trims.

Passive Safety Features:

Seat belts (three-point in front, lap in rear), reinforced cabin structure, padded dashboard and steering wheel.

💡 Technology Features

Infotainment System 1989:

Basic AM/FM radio with cassette player; optional premium sound system. Analog instrumentation.

Driver Assistance Features 1989:

Limited to basic active safety features like RWAL. No electronic stability control, traction control, or advanced driver-assistance systems (ADAS).

Connectivity Options 1989:

None in the modern sense. Basic electrical system powers accessories.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000-5,000 miles (5,000-8,000 km) or 3-6 months, depending on driving conditions and oil type used. Refer to manual for specific recommendation.

Air Filter Replacement:

Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on driving environment. Check manual.

Spark Plug Replacement Gasoline:

Every 30,000-60,000 miles (48,000-96,000 km), depending on spark plug type. Refer to manual for specific plug numbers and gap.

Timing Belt Replacement:

Check manual; many Isuzu engines of this era used timing chains, but some gasoline models might use belts. If belt, typically 60,000-90,000 miles (96,000-145,000 km).

Engine Oil Spec:

API SG or SF classification, viscosity grades typically 10W-30 or 10W-40 for gasoline engines; 15W-40 or 10W-30 for diesel engines. Consult manual for precise recommendation.

Coolant Spec:

Ethylene glycol based coolant (green), typically a 50/50 mix with distilled water. Ensure protection down to -34°F (-37°C). Check manual for specific type and capacity.

Brake Fluid Spec:

DOT 3 or DOT 4. Use fresh fluid from a sealed container.

Common Issues Gasoline:

Carburetor performance degradation, vacuum leaks, ignition coil failure, exhaust manifold cracks, rust on body panels, rear main seal leaks.

Common Issues Diesel:

Glow plug issues, injector pump calibration, turbocharger wear (on turbo models), head gasket failures, starter motor fatigue, potential for injector line leaks.

Common Issues General:

Rust (particularly wheel wells, rocker panels, frame rails), suspension wear (ball joints, bushings), clutch wear, clutch master/slave cylinder leaks, radiator leaks, power steering leaks.

📚 Vehicle History

Isuzu Heritage:

Isuzu Motors Ltd. is a Japanese commercial vehicle and diesel engine manufacturer with a long history of producing reliable utility vehicles and engines.

Isuzu Pickup Generations:

The 1989 model falls within the second generation (1985-1995) of Isuzu pickups, known for significant improvements in styling, comfort, and powertrain options over the first generation.

Production Locations:

Primarily produced in Japan by Isuzu and often rebadged and sold in various markets (e.g., Chevrolet LUV in earlier years, Holden Colorado in Australia).

🏆 Awards & Recognition

Industry Awards:

While specific 'awards' for this exact model year might be difficult to pinpoint, Isuzu pickups consistently received recognition for their durability and value in the compact truck segment during the late 80s and early 90s.