Jeep Grand Cherokee ZJ 1998 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: Jeep Model: Grand Cherokee Generation: ZJ Model Year: 1998 Codes Chassis Code: ZJ 👋 Introduction Market Position Segment: Mid-size Luxury SUV Target Audience: Enthusiasts, DIY...

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Description

🏷️ Basic Information

Identification

Make:

Model:

Grand Cherokee

Generation:

Model Year:

Codes

Chassis Code:

👋 Introduction

Market Position

Segment:

Mid-size Luxury SUV

Target Audience:

Enthusiasts, DIY mechanics, professional technicians

Competitive Analysis

Competitors:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Land Rover Discovery

Key Features

Vehicle Attributes:

Off-road capability, comfortable ride, spacious interior, optional V8 power

Manual Value Proposition:

Essential resource for maintaining and repairing the 1998 Grand Cherokee ZJ

📋 Manual Details

Coverage Areas

Comprehensive Coverage:

Full service, repair, and maintenance instructions

Page Count

Estimated Pages:

1500+

Manual Type

Type:

Factory Service Manual / Workshop Manual

Language

Language:

English

Format

Format:

Digital (PDF)

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine assembly, disassembly, diagnosis, repair for all variants

Engine Electrical:

Ignition system, fuel injection, sensors, wiring diagrams, ECM

Transmission Manual:

NV3550 (optional) - diagnosis, repair, overhaul

Transmission Automatic:

42RE, 44RE, 46RE - diagnosis, repair, overhaul, torque converter

Drivetrain 4X4:

NV242 (Command-Trac) / NV249 (Selec-Trac) transfer case operation, repair, diagnosis

Axles Differentials:

Front and rear axle assembly, differentials, CV joints, U-joints

Suspension Steering:

Front/rear suspension components, shock absorbers, springs, steering system, power steering

Brakes:

Front disc, rear drum/disc brakes, ABS system, parking brake

Cooling Heating Ac:

Radiator, cooling fan, water pump, HVAC system, refrigerant handling

Fuel System:

Fuel pump, injectors, fuel lines, fuel filter, evaporative emissions control

Exhaust System:

Exhaust manifolds, catalytic converter, mufflers, pipes

Electrical Body:

Lighting, power windows, locks, mirrors, wipers, horn, interior/exterior lighting

Chassis Body:

Frame, body panels, doors, hood, tailgate, interior trim

Diagnostic Troubleshooting:

Systematic diagnostic procedures, fault code interpretation (OBD-II)

Procedures Included

Routine Maintenance:

Oil changes, fluid checks/changes, filter replacements, tire rotation

Component Replacement:

Detailed instructions for replacing all major and minor components

Rebuilding Overhauls:

Engine and transmission overhaul procedures with specifications

Troubleshooting Guides:

Step-by-step troubleshooting for common and uncommon issues

Electrical Diagnosis:

Wiring diagrams, circuit testing, component testing

Technical Depth

Depth:

Comprehensive, from basic maintenance to complete engine/transmission rebuilds

Diagnostic Level:

Advanced diagnostic procedures, including scantool usage and sensor testing

Special Tools:

Lists and descriptions of required special tools for specific procedures

📊 Manual Specifications

File Format

File Type:

Searchability:

Searchable text for quick information retrieval

Printability:

Printable pages for convenient workshop use

Print Quality

Quality:

High-resolution scans of original factory documents

Binding Type

Binding:

N/A (Digital)

Paper Type

Paper:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine

Engine 1 Variant:

4.0L (3956cc) OHV Inline-6 'Power Tech'

Engine 1 Bore Stroke:

3.88 x 3.41 inches (98.5 x 86.7 mm)

Engine 1 Compression Ratio:

8.8:1

Engine 1 Horsepower:

185 hp @ 4,700 rpm

Engine 1 Torque:

220 lb-ft @ 3,200 rpm

Optional Engine

Engine 2 Variant:

4.8L (4887cc) OHV V8 'Magnum' (also known as 5.2L)

Engine 2 Bore Stroke:

3.92 x 3.31 inches (99.5 x 84.0 mm)

Engine 2 Compression Ratio:

9.1:1

Engine 2 Horsepower:

215 hp @ 4,700 rpm

Engine 2 Torque:

275 lb-ft @ 3,200 rpm

Fuel System

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded Gasoline

Performance

Engine Management:

Chrysler ECM (Engine Control Module) with OBD-II diagnostics

🔧 Transmission

Standard Transmission

Type Standard:

4-Speed Automatic (42RE for 4.0L, 44RE for 4.8L V8)

Optional Transmission

Type Optional:

5-Speed Manual (NV3550) - Rare option on 4.0L

Features

Automatic Features:

Electronic overdrive control

Transfer Case Options:

NV242 (Command-Trac - Full-time 2WD/4WD) or NV249 (Selec-Trac - Full-time 4WD with locking center differential)

📐 Dimensions

Exterior

Wheelbase:

109.6 inches (2784 mm)

Length:

179.1 inches (4550 mm)

Width:

70.3 inches (1786 mm)

Height:

65.2 inches (1656 mm)

Weights

Curb Weight Min:

4,000 lbs (1814 kg) (4.0L 2WD)

Curb Weight Max:

4,500 lbs (2041 kg) (4.8L V8 4WD)

Towing Capacity:

Up to 6,500 lbs (2948 kg) (with appropriate equipment)

🛡️ Safety Features

Ratings

NHTSA Rollover Rating:

3 out of 5 stars (Varies by configuration)

Active Features

Standard Anti-lock Braking System (ABS) on all wheels

Passive Features

Airbags:

Driver and front passenger airbags

Seatbelts:

Three-point front and rear seatbelts

💡 Technology Features

Infotainment

Audio System:

Optional premium Infinity Gold sound system, cassette player, CD player (optional)

Driver Assistance

Cruise Control:

Standard on most trims

Traction Control:

Optional on some models (e.g., Quadra-Trac II system)

Connectivity

OBD Ii:

OBD-II compliant for emissions and diagnostics

🔧 Maintenance

Service Intervals

Oil Change Interval:

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

Transmission Fluid Change:

Every 30,000 - 60,000 miles (ATF+4 or equivalent recommended for 42RE/44RE/46RE)

Coolant Flush:

Every 30,000 miles or 2 years

Fluid Specifications

Engine Oil Spec:

API SG or SH, SAE 10W-30 (5.2L V8 may prefer 10W-30 or 5W-30 depending on climate)

Transmission Fluid Type:

Chrysler ATF+4 (Mopar P/N 05013457GA) or equivalent for automatics. Manual transmission fluid varies by type.

Transfer Case Fluid:

Mopar NV242 or NV249 Transfer Case Lubricant (Dexron III or equivalent for some years/models)

Power Steering Fluid:

Chrysler Power Steering Fluid (Mopar P/N 04303000)

Known Issues

Common Problems:

Heater core leaks, cracked dashboards, rear main seal leaks (V8), transmission cooler leaks leading to trans fluid/coolant mixing, sway bar links, radiator issues.

Electrical Problems:

Window motor failures, intermittent sensor issues, headliner sagging.

Maintenance Tips

Preventative Maintenance:

Regularly check coolant level and condition, inspect for leaks, clean battery terminals, maintain tire pressure.

📚 Vehicle History

Brand Heritage

Jeep Legacy:

Jeep's reputation for ruggedness and off-road prowess

Model Evolution

Zj Introduction:

Introduced in 1993 as a significant departure from the XJ Cherokee, focusing on comfort and luxury.

Zj Redesign:

The 1996 model year saw a significant facelift for the ZJ, including updated interior and exterior styling, and the introduction of OBD-II.

1998 Updates:

Minor updates, often included refinements to features and option packages.

Production

Production Period:

1993-1998

Manufacturing Plant:

Jefferson North Assembly Plant, Detroit, Michigan, USA

🏆 Awards & Recognition

Recognitions

Automobile Magazine Almanac:

Recognized for its blend of on-road comfort and off-road capability.

Four Wheeler Magazine:

Often cited for its robust powertrain and off-road prowess within its class.