🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

1999

Code:

WJ

👋 Introduction

Segment:

Mid-size/Full-size SUV, luxury/off-road oriented.

Competitors:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery.

Features:

Robust four-wheel-drive systems (Selec-Trac, Quadra-Trac II, Quadra-Drive), comfortable interior, towing capability, available V8 engine, and Jeep's iconic off-road heritage.

📋 Manual Details

Primary Coverage:

Jeep Grand Cherokee 1999 (WJ) including Diesel Engine

Estimated Count:

Extensive (typically 1500+ pages for factory service manuals of this era)

Type:

Factory Service Repair Manual / Workshop Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Complete engine disassembly, assembly, inspection, and repair for gasoline and diesel variants. Includes cylinder block, cylinder head, pistons, crankshaft, camshaft, valve train, etc.

Cooling System:

Radiator, water pump, thermostat, hoses, fan system, coolant specifications, and troubleshooting.

Fuel System:

Fuel pump, fuel tank, fuel injectors, fuel lines, fuel filter, pressure testing, and diagnosis.

Engine Control System:

SFI (Sequential Fuel Injection) system, ignition system, knock sensor, throttle body, ECU (Engine Control Unit) diagnostics, and wiring diagrams.

Emission Control Systems:

Charcoal canister, EGR (Exhaust Gas Recirculation) system, and other emission-related components and diagnostics.

Lubrication System:

Oil pump, oil filter, oil pan, oil passages, and oil specifications.

Exhaust System:

Exhaust pipes, muffler, catalytic converter, and mounting components.

Starting System:

Starter motor, starter switch, battery, and related electrical components.

Charging System:

Generator (alternator) testing, regulator, and battery charging system.

Manual Transaxle System:

Manual transaxle disassembly, assembly, component inspection, fluid specifications, and troubleshooting.

Automatic Transaxle System:

Automatic transaxle disassembly, assembly, torque converter, valve body, external controls, fluid specifications, and troubleshooting.

Transfer Case:

Operation, maintenance, and repair of the transfer case (likely NV242 or NV247 for this generation).

Front Drive Shaft:

Removal, installation, and servicing of the front driveshaft and universal joints.

Rear Axle Beam:

Servicing of the rear axle assembly, including differential, axle shafts, and bearings.

Front Suspension System:

Front suspension components (control arms, ball joints, tie rods, sway bar), alignment, and troubleshooting.

Rear Suspension System:

Rear suspension components (control arms, track bar, springs, shock absorbers), alignment, and troubleshooting.

Wheel And Tire System:

Tire and wheel specifications, rotation, balancing, and pressure checks.

Brake System:

Front and rear brakes (discs/drums), master cylinder, brake booster, parking brake, hydraulic lines, ABS (Anti-lock Braking System) diagnostics, and bleeding procedures.

Steering System:

Power steering pump, steering gear, steering column, tie rods, and hydraulic system servicing.

Wiper And Washer System:

Wiper motor, linkages, blades, washer pump, and fluid system.

Air Conditioning System:

AC compressor, condenser, evaporator, refrigerant system, controls, and troubleshooting.

Heater Radiator Assy:

Heater core, blower motor, and associated ducting and controls.

Lighting System:

Headlamps, tail lamps, marker lamps, interior lighting, and associated wiring.

Audio And Visual System:

Radio receiver, speakers, and antenna systems.

Instrument Panel:

Gauges, warning lamps, and associated components.

Body Repair:

Structural repair, panel replacement (hood, fenders, bumpers, doors), glass replacement, and weatherstripping.

Supplemental Restraint System:

Airbag system components (sensors, modules, airbags), seat belts, and SRS warning light diagnostics.

Electrical System:

Extensive coverage of wiring diagrams, fuses, relays, power distribution, and various electrical components and modules.

Maintenance:

Scheduled maintenance, fluid changes (oil, coolant, transmission fluid, brake fluid, differential fluid), filter replacements, spark plug replacement, belt inspection and replacement.

Diagnostics:

Troubleshooting guides, diagnostic trouble codes (DTCs) for various systems, symptom-based diagnostics.

Repair:

Step-by-step repair procedures for all major components and systems, including engine rebuilds, transmission overhauls, suspension component replacement, brake caliper replacement, and body panel alignment.

Installation:

Procedures for installing new or replacement parts and components.

Adjustment:

Procedures for adjusting various systems like parking brake, clutch, and ride height.

Depth:

Comprehensive; covers everything from basic fluid checks and filter changes to complete engine and transmission teardowns, electrical system diagnostics, and bodywork.

📊 Manual Specifications

Quality:

High-resolution PDF, likely with searchable text for efficient navigation.

Printability:

Designed for printing, with clear diagrams and text.

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Gasoline Options:

4.0L I6 (PowerTech), 4.7L V8 (PowerTech). The manual explicitly mentions the Diesel Engine, likely the VM Motori 2.5L TD.

4.0L I6:

Approx. 190 hp @ 4600 rpm, 235 lb-ft @ 3200 rpm

4.7L V8:

Approx. 230 hp @ 4700 rpm, 295 lb-ft @ 3200 rpm

2.5L Vm Motori Diesel:

Approx. 115 hp, 236 lb-ft torque (specifics may vary slightly by region/spec).

Injection Type:

Multi-port Electronic Fuel Injection (MPI) for gasoline, direct injection for diesel.

🔧 Transmission

Manual Transmission:

NV3550 5-speed manual (less common on higher trims).

Automatic Transmission:

45RFE/545RFE 4-speed automatic, 42RE 4-speed automatic (for 4.0L).

4X4 Systems:

Selec-Trac (full-time 4WD, part-time 4WD, 2WD), Quadra-Trac II (full-time 4WD with low range), Quadra-Drive (full-time 4WD with electronic limited-slip differentials).

📐 Dimensions

Length:

Approx. 183.7 inches

Width:

Approx. 72.4 inches

Height:

Approx. 67.4 inches

Wheelbase:

Approx. 111.2 inches

Curb Weight:

Approx. 4,000 - 4,500 lbs (varies by engine and configuration).

🛡️ Safety Features

NHTSA Front Impact:

4-star driver, 4-star passenger (for 1999 model year, specific testing may vary).

ABS:

Standard Anti-lock Braking System (ABS) on all models.

Airbags:

Standard front driver and passenger airbags. Side airbags became available later or on higher trims.

💡 Technology Features

Audio Options:

AM/FM stereo with cassette, CD player options. Various speaker configurations, optional amplifier.

ABS:

Standard Anti-lock Braking System (ABS).

Remote Keyless Entry:

Available on most trims.

🔧 Maintenance

Oil Change:

Every 3,000-5,000 miles or 3-6 months (depending on oil type and driving conditions).

Transmission Fluid:

Every 30,000-60,000 miles for automatic transmissions (ATF+4 or equivalent), check manual for specific type. Manual transmission fluid every 60,000-100,000 miles.

Coolant Change:

Every 30,000-50,000 miles or 2-3 years (using HOAT coolant).

Spark Plugs:

Approx. 100,000 miles for Iridium plugs (if equipped), check manual for specific type and interval.

Engine Oil:

API SN/SP certified synthetic or synthetic blend. SAE 5W-30 for 4.0L I6, SAE 5W-30 or 10W-30 for 4.7L V8 (refer to manual for specific viscosity based on temperature). Diesel requires appropriate diesel engine oil (e.g., 15W-40).

Automatic Transmission Fluid:

Chrysler ATF+4 (Mopar material number 05013457AA or equivalent).

Coolant:

Chrysler HOAT (Hybrid Organic Acid Technology) Long Life Antifreeze/Coolant (Mopar material number 05050890AA or equivalent).

Common Problems:

Heater core leaks, radiator failure, exhaust manifold cracks (4.7L V8), death wobble (suspension issues), transmission cooler line leaks, transfer case chain stretch (Quadra-Trac II), cylinder head gasket issues (4.7L V8).

📚 Vehicle History

Jeep Legacy:

Jeep has a long history of rugged, off-road capable vehicles, dating back to WWII Willy's MB. The Grand Cherokee represents a more luxurious and refined take on the SUV concept.

Wj Generation:

The WJ generation (1999-2004) was a significant redesign from the ZJ. It featured a more aerodynamic design, improved interior, and new powertrain options, including the robust 4.7L V8 and revised 4.0L inline-six. It also introduced advanced 4x4 systems like Quadra-Trac II and Quadra-Drive.

Manufacturing Plant:

Jefferson North Assembly Plant, Detroit, Michigan, USA.

🏆 Awards & Recognition

Automotive Journal Awards:

The Grand Cherokee line has historically received positive reviews for its off-road capability and luxurious appointments, often appearing on "best SUV" lists of its era.