🏷️ Basic Information

Make:

Jeep

Model:

Liberty

Year:

2002

Chassis Code:

KJ

Generation Code:

KJ

Generation Start Year:

2002

Generation End Year:

2007

👋 Introduction

Jeep Liberty Kj Market Niche:

The 2002 Jeep Liberty (KJ) was positioned as a compact SUV offering a balance of on-road comfort and Jeep's signature off-road capability, differentiating itself from more car-like crossovers.

Key Competitors 2002:

Competed with vehicles like the Ford Escape, Honda CR-V, Toyota RAV4, Nissan Xterra, and Chevrolet Tracker in the compact SUV segment.

Diy Repair Emphasis:

The manual actively promotes DIY (Do-It-Yourself) repairs, highlighting cost savings and the satisfaction of fixing one's own vehicle, with a nod to the enjoyment of acquiring tools.

📋 Manual Details

Applicable Models:

2002 Jeep Liberty KJ

Covered Systems Overview:

General Information, Engine, Transmission, Chassis, Body, Wiring, Fuel System, Emission Control, Induction, Mechanical Components, Control Systems, Differentials, Steering, Suspension, Brakes, ABS, Torque Settings.

Estimated Page Count:

Estimated 1500+ pages (typical for comprehensive factory service manuals)

Manual Type:

Service and Repair Manual

Language:

English

File Format:

PDF

Operating Systems:

All Versions of Windows & Mac

Software Requirements:

Adobe PDF Reader

📖 Manual Coverage

Engine Service And Overhauling:

Detailed procedures for engine disassembly, inspection, repair, and reassembly, including cylinder head, pistons, connecting rods, crankshaft, camshafts, timing components, lubrication system, and cooling system.

Transmission Service:

Coverage for both manual and automatic transmissions, including removal, disassembly, inspection, repair, and installation. Specific details on gear sets, clutch packs, valve bodies, and torque converters.

Chassis And Suspension:

Comprehensive coverage of steering system components (rack and pinion, power steering pump), front and rear suspension (struts, control arms, ball joints, bushings), and wheel bearing service.

Brakes And ABS:

Detailed information on brake system operation, components (master cylinder, brake lines, calipers, pads, rotors), hydraulic system bleeding, parking brake, and Anti-lock Braking System (ABS) diagnostics and repair.

Electrical And Wiring:

Extensive wiring diagrams for all vehicle circuits, including engine control, lighting, instruments, comfort systems, power accessories, and diagnostic connector locations and functions.

Fuel And Emission Control:

Information on fuel delivery systems (fuel pump, injectors, fuel lines), fuel tank service, emission control systems (catalytic converter, O2 sensors, EVAP system), and related diagnostics.

Body And Interior:

Procedures for body panel removal and installation, interior trim components, door mechanisms, glass replacement, seat adjustments, and body sealing.

Induction And Mechanical:

Details on intake manifold, exhaust systems, cooling fan, air conditioning system service, and general mechanical component repair not specifically tied to major assemblies.

Maintenance Procedures:

Step-by-step instructions for routine maintenance tasks such as oil changes, filter replacements, spark plug service, fluid checks and changes, and belt inspections.

Repair Procedures:

Comprehensive repair guides for nearly all vehicle systems, from minor adjustments to major component overhauls and replacements.

Troubleshooting And Diagnostics:

Systematic approaches to identifying and resolving common and complex vehicle problems, including diagnostic trouble codes (DTCs), symptom-based troubleshooting, and electrical diagnostic flowcharts.

Technical Specifications And Torques:

Essential specifications including torque values for critical fasteners, clearances, fluid capacities, and electrical specifications, crucial for correct assembly and repair.

Depth Of Coverage:

Factory-level detail covering basic maintenance, advanced diagnostics, complete component overhauls, and rebuild procedures for all major vehicle systems.

Diagrams And Illustrations:

Includes detailed step-by-step diagrams and exploded views to aid in complex repair and assembly procedures.

📊 Manual Specifications

File Format Details:

Digital PDF format, allowing for easy searching, zooming, and printing of specific sections.

Printability:

Printable pages for on-the-job use, designed for clarity and readability.

Digital Binding:

N/A (Digital Format)

Digital Paper Emulation:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Options 2002:

2.4L PowerTech I4 (GEMA), 3.7L PowerTech V6 (JATECH)

Engine Code:

GEMA

Displacement:

2429 cc (148.2 cu in)

Bore X Stroke:

90.0 mm x 94.5 mm (3.54 in x 3.72 in)

Compression Ratio:

9.5:1

Horsepower Hp:

150 hp @ 5200 rpm

Torque Lb Ft:

165 lb-ft @ 4000 rpm

Engine Code:

JATECH

Displacement:

3701 cc (225.8 cu in)

Bore X Stroke:

93.0 mm x 90.9 mm (3.66 in x 3.58 in)

Compression Ratio:

9.6:1

Horsepower Hp:

210 hp @ 5200 rpm

Torque Lb Ft:

235 lb-ft @ 3000 rpm

Fuel Delivery:

Multi-port Electronic Fuel Injection (MPI)

Recommended Fuel:

87 Octane Unleaded Gasoline (for both engines)

🔧 Transmission

Manual Transmission Options:

42RLE Automatic Transmission (standard on most models, but a 5-speed manual was available in some markets/trims)

Automatic Transmission Options:

42RLE 4-Speed Automatic Transmission

Transfer Case Options:

Command-Trac NV136 (part-time 2-speed transfer case) and Selec-Trac NV147 (full-time 4WD system with low range)

Automatic Transmission Fluid Spec:

Chrysler ATF+4 (MS-9602) or equivalent

📐 Dimensions

Wheelbase In:

104.3

Length In:

171.5

Width In:

72.4

Height In:

72.6

Curb Weight Lbs:

Approx. 3700-4100 lbs (depending on configuration)

Gross Vehicle Weight Rating Gvwr Lbs:

Approx. 5200-5400 lbs

🛡️ Safety Features

NHTSA Rollover Resistance Rating:

Four stars (for the 2002 model year)

ABS Availability:

Available (often standard on higher trims or optional)

Traction Control Availability:

Available (often part of ESC systems)

Airbags Standard:

Front airbags

Airbags Optional:

Side curtain airbags (availability may vary by trim and region)

💡 Technology Features

Infotainment Options 2002:

Basic AM/FM radio with CD player, optional cassette player, and premium audio systems available on higher trims.

Driver Assistance Features 2002:

Limited compared to modern vehicles. ABS was the primary electronic driver assistance feature. Cruise control was standard on many models.

Connectivity Options 2002:

No Bluetooth or USB connectivity in 2002. Auxiliary input jacks for external audio devices became more common in later years.

🔧 Maintenance

Engine Oil Change Interval:

Every 5,000 - 7,500 miles or 6 months (whichever comes first), depending on driving conditions (refer to manual for specifics).

Engine Oil Filter Replacement:

Replace with engine oil.

Air Filter Replacement:

Inspect every 15,000 miles, replace as needed (typically every 30,000 miles or sooner in dusty conditions).

Coolant Flush Interval:

Every 30,000 - 60,000 miles or 3-5 years.

Spark Plug Replacement Interval 2 4L:

Approximately 100,000 miles (depending on plug type, e.g., platinum or iridium).

Spark Plug Replacement Interval 3 7L:

Approximately 100,000 miles (depending on plug type).

Engine Oil Type Spec:

SAE 5W-30 API Service SJ or SL (for both engines)

Engine Oil Capacity Qts 2 4L:

4.5 quarts (with filter change)

Engine Oil Capacity Qts 3 7L:

5.0 quarts (with filter change)

Coolant Type Spec:

Mopar OAT (Organic Additive Technology) Antifreeze/Coolant, 5-Year/100,000 Mile Formula (typically orange color)

Coolant Capacity Qts:

Approx. 12.3 - 13.0 quarts (depending on engine and heater core)

Brake Fluid Spec:

DOT 3

Power Steering Fluid Spec:

Chrysler Power Steering Fluid (or equivalent)

Common Issue Radiator Leaks:

Premature radiator failure, especially the plastic end tanks, leading to coolant leaks.

Common Issue Oil Filter Adapter Housing:

Leaking oil filter adapter housing, common on the 3.7L V6.

Common Issue Evap System Codes:

Evaporative Emission Control (EVAP) system faults, often related to the vent solenoid or purge valve.

Common Issue Ignition Coils:

Failure of individual ignition coils can lead to misfires and rough running.

Common Issue Suspension Components:

Wear in control arm bushings, ball joints, and tie rod ends can cause steering looseness and tire wear.

📚 Vehicle History

Jeep Brand Legacy:

Jeep has a long-standing reputation for robust, off-road capable vehicles, dating back to its military origins in WWII. The Liberty aimed to leverage this heritage in a more compact and user-friendly package.

Liberty Kj Introduction:

The KJ Liberty replaced the Jeep Cherokee (XJ) in the compact SUV lineup in North America, offering a more modern platform and styling cues. It was designed to be more refined than its predecessor.

Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Automotive Press Awards:

While specific awards for the 2002 model year are not prominently cited, the Jeep Liberty (KJ) was generally well-received for its off-road capability within its segment. Publications often noted its Jeep DNA.