🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

1999

Chassis Code:

WJ

Product Type:

Factory Service Repair Manual

👋 Introduction

Market Position:

The Jeep Grand Cherokee WJ represented a significant evolution in the luxury SUV segment for Jeep, offering improved refinement and on-road manners compared to its predecessors, while retaining robust off-road capabilities. This manual targets owners and independent repair facilities seeking factory-accurate information.

Competitive Analysis:

Competed directly with vehicles like the Ford Explorer, Chevrolet Blazer, Toyota 4Runner, and Land Rover Discovery. The WJ's focus on a car-like ride and premium features set it apart in its class.

Key Features Of Vehicle:

Unibody construction for improved ride comfort, available Quadra-Drive system for advanced 4x4 traction, spacious interior, optional premium sound systems, and a variety of powertrain options.

📋 Manual Details

Coverage Areas:

Lubrication, Maintenance, Suspension, Differential, Driveline, Brakes, Clutch, Cooling System, Battery, Starting System, Charging System, Ignition System, Instrument Panel, Audio Systems, Horn Systems, Vehicle Speed Control, Turn Signal, Hazard Warning, Wiper and Washer, Lamps, Passive Restraint Systems, Electrically Heated Systems, Power Distribution, Power Locks, Vehicle Theft/Security, Power Windows, Power Mirrors, Chime/Buzzer Warnings, Overhead Console, Wiring Diagrams, Engine, Exhaust System, Intake Manifold, Frame, Bumpers, Fuel System (2.5L Diesel), Steering, Transmission, Transfer Case, Tires, Wheels, Body, Heating, Air Conditioning, Emission Control Systems.

Trim Level Coverage:

Covers all major trim levels and configurations available for the 1999 Jeep Grand Cherokee WJ.

Page Count:

Estimated 2000+ pages (typical for comprehensive factory service manuals of this era)

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF

Software Requirements:

Adobe PDF Reader, WinZip

Zoom Functionality:

Yes

Operating System Compatibility:

All Versions of Windows & Mac

📖 Manual Coverage

Systems Covered:

Engine mechanical and electrical systems, drivetrain (transfer case, differentials, axles), transmission, braking system, steering, suspension, HVAC, fuel system, exhaust system, cooling system, electrical systems (charging, starting, ignition, lighting, accessories), body controls, interior electronics, safety systems (airbags, seat belts).

Procedures Included:

Detailed repair and overhaul procedures, diagnostic troubleshooting flowcharts, maintenance schedules, component removal and installation, torque specifications, fluid capacities and specifications, wiring diagrams, component testing, special tool requirements.

Diagnostic Procedures:

Detailed diagnostic charts and flowcharts for common electrical and mechanical faults. Includes procedures for checking component operation and identifying root causes of problems.

Technical Depth:

Comprehensive, covering from basic fluid changes and maintenance to complete engine and transmission rebuilds, electrical system diagnostics, and body component repair. Includes factory-level diagnostic procedures.

Electrical Diagrams Coverage:

Comprehensive wiring diagrams covering all vehicle systems, including power distribution, grounds, and component connections, crucial for electrical troubleshooting and repairs.

📊 Manual Specifications

File Format Details:

Searchable text within PDF for efficient information retrieval, high-resolution diagrams.

Searchability:

Full text searchability within the PDF document, enabling quick access to specific topics and repairs.

Print Quality:

Designed for clear reproduction if printed, though delivered digitally.

Binding Type:

Not Applicable (Digital Format)

Paper Type:

Not Applicable (Digital Format)

⚙️ Engine Specifications

Primary Engine Offered:

4.0L Inline 6-Cylinder ( produksi code ERH)

Secondary Engine Offered:

4.7L V8 Magnum ( produksi code ENH/ENM)

Diesel Engine Offered:

2.5L Turbo Diesel (VM Motori / Production Code R425), specific coverage for this engine is noted in the manual.

Horsepower 4.0L:

185 hp @ 4600 rpm (approx.)

Torque 4.0L:

220 lb-ft @ 3200 rpm (approx.)

Horsepower 4.7L:

220-235 hp @ 4700 rpm (depending on variant, approx.)

Torque 4.7L:

285-300 lb-ft @ 3200 rpm (depending on variant, approx.)

Fuel System Type:

Sequential Multi-Port Fuel Injection (MPI) for gasoline engines. Direct injection or indirect injection for the diesel variant.

Cooling System Type:

Pressurized liquid cooling system with electric fan or viscous fan clutch depending on engine and trim.

Ignition System Type:

Distributorless Ignition System (DIS) with individual coil packs for 4.0L and 4.7L engines.

Engine Torque Specs Availability:

Detailed torque specifications for critical engine components such as cylinder head bolts, main bearings, connecting rod bolts, and intake/exhaust manifolds are provided.

🔧 Transmission

Standard Transmission Type:

4-speed Automatic (42RE for 4.0L, 45RFE for 4.7L)

Optional Transmission Type:

Manual transmission was generally not offered on the WJ Grand Cherokee in North America for 1999.

Transfer Case Options:

Selec-Trac (part-time NV242) or Quadra-Drive (full-time NV247 with Vari-Lok differentials)

Automatic Transmission Fluid Type:

Chrysler ATF+4 (MS-9602) is the recommended fluid for most WJ transmissions, though earlier specifications might cite ATF+3. Consult manual for exact fill.

Transmission Torque Specs Availability:

Comprehensive torque specifications for transmission internal and external components, including bell housing bolts, valve body fasteners, and cooler line fittings.

📐 Dimensions

Exterior Length Inches:

184.5"

Exterior Width Inches:

71.9"

Exterior Height Inches:

66.7"

Wheelbase Inches:

110.0"

Ground Clearance Inches:

8.0" (approx. depending on suspension)

Curb Weight Lbs:

4,000 - 4,500 lbs (approx. depending on engine and equipment)

Towing Capacity Lbs:

Up to 6,500 lbs (with proper towing package)

Standard Wheel Size:

16-inch alloy or steel wheels

Standard Tire Size:

P225/75R16 (common size, variants exist)

Wheel Bolt Pattern:

5x114.3mm (5x4.5 inches)

🛡️ Safety Features

NHTSA Front Crash Test Rating:

Not explicitly rated in current NHTSA format for 1999, but generally considered robust for its era.

Passive Restraint Systems:

Front airbags, three-point seatbelts with pretensioners, available side-impact airbags (optional on some trims), seat belt height adjusters.

Active Safety Features:

Four-wheel Anti-lock Braking System (ABS) standard on all models. Available traction control (for 4.7L models with specific transfer cases).

💡 Technology Features

Infotainment Options:

Factory AM/FM stereo with cassette and CD player, optional premium Infinity speaker systems, optional steering wheel audio controls.

Driver Assistance Features:

Cruise control, power adjustable pedals (optional on some trims).

Connectivity Features:

Limited by era, primarily analog systems. No Bluetooth or USB connectivity. Power accessories for windows, locks, and mirrors.

🔧 Maintenance

Oil Change Interval Miles:

Typically every 3,000-7,500 miles depending on oil type and driving conditions. The manual will detail specific intervals based on severe vs. normal use.

Transmission Fluid Change Interval Miles:

Generally recommended every 30,000-60,000 miles, or as specified by the manual, especially for severe service.

Coolant Change Interval Miles:

Typically every 30,000-100,000 miles or 2-5 years, depending on coolant type (conventional green vs. HOAT).

Engine Oil Specification:

SAE 5W-30 for most conditions for both 4.0L and 4.7L engines. Refer to manual for specific temperature ranges and API service classification (e.g., API SN or equivalent).

Coolant Specification:

Chrysler's HOAT (Hybrid Organic Acid Technology) coolant or equivalent. Typically a 50/50 mix of antifreeze and distilled water. Color may vary (e.g., orange).

Brake Fluid Specification:

DOT 3 or DOT 4 brake fluid.

Transfer Case Fluid Specification:

NV242 (Selec-Trac): ATF+4 or equivalent. NV247 (Quadra-Drive): Specific Quadra-Drive fluid or equivalent meeting Chrysler MS-10216 or MS-12108 specifications. Manual is critical here.

Common Issues Wj Grand Cherokee:

Head gasket leaks on 4.7L V8 engines, death wobble (front suspension shimmy), radiator leaks, transmission solenoid pack issues, ActiveX seat material degradation, ABS sensor failures, transfer case actuator problems (Quadra-Trac II).

Common Issues Wj Grand Cherokee Electrical:

Failing instrument cluster (wipers, gauges), HVAC blower motor resistor failure, power door lock actuator issues, intermittent electrical gremlins due to corroded grounds.

📚 Vehicle History

Brand Heritage Jeep:

Jeep has a storied history rooted in World War II military vehicles, evolving into a brand synonymous with off-road capability and ruggedness. The Grand Cherokee line, introduced in 1993, aimed to blend this capability with increased comfort and luxury.

Model Evolution Wj Generation:

The WJ generation (1999-2004) was a complete redesign from the ZJ. It featured a unibody construction, significantly revised interior and exterior styling, and introduced the more powerful 4.7L V8 engine, marking a shift towards a more premium and refined SUV experience while retaining Jeep's core off-road DNA.

Production Location:

Jeep Grand Cherokee WJ models were primarily manufactured at the Jefferson North Assembly Plant in Detroit, Michigan.

🏆 Awards & Recognition

Automotive Awards Wj:

The Grand Cherokee platform generally received positive reviews for its blend of comfort and capability. Specific awards for the 1999 model year are less commonly cited in aggregate, but it was a strong contender in the mid-size SUV market.