🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2002

Generation Code:

TJ

Platform Code:

JK

👋 Introduction

Segment:

Compact Sport Utility Vehicle (SUV) / Off-Road Vehicle

Key Selling Proposition:

Iconic off-road capability, ruggedness, open-air driving experience

Competitors 2002:

Toyota Tacoma (4x4), Ford Ranger (4x4), Nissan Xterra, Suzuki Vitara

Chassis:

Body-on-frame construction, solid front and rear axles

Body Styles:

2-door convertible (Wrangler) and optional 4-door (Wrangler Unlimited - introduced later, but chassis similarities exist)

Off Road Systems:

Command-Trac NV241OR transfer case (2H, 4H, 4L), optional limited-slip differentials

📋 Manual Details

Primary Coverage:

Full Factory Service, Repair, and Workshop Documentation

Secondary Coverage:

Diagnostics, Troubleshooting, Maintenance, Wiring Diagrams, Specifications

Estimated Page Count:

1500+

Type:

Workshop Service Manual

Language:

English

Format:

PDF (Printable, Searchable)

📖 Manual Coverage

Engine:

4.0L (12-valve OHV Inline-6), 2.4L (16-valve DOHC Inline-4)

Transmission:

AX-15 (5-speed Manual), NV3550 (5-speed Manual), 30/42RLE (4-speed Automatic)

Drivetrain:

NV241OR (Command-Trac NV241OR Transfer Case), Dana 30 (Front Axle), Dana 35C (Rear Axle), Dana 44 (Optional Rear Axle)

Suspension:

Front: 5-Link Live Axle with Coil Springs; Rear: 5-Link Live Axle with Coil Springs

Brakes:

Front: Solid Disc, Rear: Solid Disc (ABS optional)

Electrical:

Battery, Charging System, Starting System, Ignition System, Lighting, Instrumentation, Body Electrical, Powertrain Control Module (PCM)

Steering:

Power-assisted recirculating ball

Body And Frame:

Body on Frame Construction, Doors, Hood, Fenders, Bumpers, Interior Trim, Seats, HVAC

Restraint Systems:

Airbags (Driver/Passenger), Seat Belts

Diagnostics:

OBD-II Diagnostics, Diagnostic Trouble Codes (DTCs)

Maintenance:

Oil Changes, Filter Replacements, Fluid Checks and Replenishment, Belt and Hose Inspections, Spark Plug Replacement

Repair:

Engine Mechanical (Head Gasket, Piston Rings), Transmission Overhaul, Clutch Replacement, Brake Pad/Rotor Replacement, Suspension Component Replacement, Electrical Component Testing and Replacement

Troubleshooting:

Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides

Installation:

Installation procedures for major components (e.g., clutch, brake assemblies), accessory installation guidance

Depth:

Comprehensive from basic scheduled maintenance to complete engine and transmission rebuilds

Diagnostics Level:

Detailed diagnostic strategies, wiring diagrams for electrical system troubleshooting

Accuracy:

Factory-level accuracy and detail, including torque specifications and tolerances

📊 Manual Specifications

Format:

PDF

Searchability:

Fully searchable text for quick information retrieval

Printability:

Printable pages for hands-on use in a workshop environment

Resolution:

High-resolution scans for clear diagrams and text

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Name:

4.0L Inline-6 OHV

Engine 1 Displacement:

3952 cc (241.7 cu in)

Engine 1 Bore X Stroke:

3.875 in x 3.570 in (98.4 mm x 90.7 mm)

Engine 1 Compression Ratio:

8.8:1

Engine 1 Horsepower:

181 hp @ 4,600 rpm

Engine 1 Torque:

222 lb-ft @ 3,200 rpm

Engine 2 Name:

2.4L Inline-4 DOHC

Engine 2 Displacement:

2429 cc (148.2 cu in)

Engine 2 Horsepower:

147 hp @ 5,200 rpm

Engine 2 Torque:

170 lb-ft @ 4,000 rpm

Fuel Delivery:

Electronic Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline

ECU Type:

Powertrain Control Module (PCM)

🔧 Transmission

Manual Transmission:

AX-15 (5-speed) for 4.0L, NV3550 (5-speed) for 4.0L and 2.4L

Automatic Transmission:

30/42RLE (4-speed Automatic)

Clutch Type:

Hydraulic actuation

Manual Fluid:

API GL-5, SAE 75W-90 (AX-15/NV3550)

Automatic Fluid:

Chrysler ATF+4 (MS-9602)

📐 Dimensions

Wheelbase:

93.4 inches (2372 mm)

Length:

151.4 inches (3845 mm)

Width:

66.5 inches (1689 mm)

Height:

71.5 inches (1816 mm) (with hardtop)

Ground Clearance:

10.2 inches (259 mm)

Cargo Volume Behind Rear Seat:

Approx. 14.7 cu ft

Curb Weight:

3538 - 3873 lbs (1605 - 1757 kg) (depending on configuration)

Gross Vehicle Weight Rating:

Approx. 4800 lbs (2177 kg)

🛡️ Safety Features

NHTSA Front Impact Driver:

4-star

NHTSA Front Impact Passenger:

4-star

ABS:

Anti-lock Braking System (ABS) - Optional

Airbags:

Driver and Passenger Front Airbags

Seat Belts:

3-point front seat belts with pretensioners, rear lap and shoulder belts

💡 Technology Features

Audio System:

Factory AM/FM/CD Player, optional Infinity speaker system

Display:

Basic analog gauges, optional digital odometer

ABS:

ABS available on front and rear brakes, driver selectable engagement.

Phone Integration:

None (aftermarket solutions required)

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles (5,000-12,000 km) or 6 months, depending on driving conditions and oil type used (refer to manual for specifics)

Engine Air Filter Replacement:

Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on inspection

Spark Plug Replacement:

4.0L: Approx. 100,000 miles (160,000 km) (Platinum or Iridium plugs); 2.4L: Approx. 30,000 miles (48,000 km) (standard plugs)

Engine Oil Type:

10W-30 (preferred) or 10W-40 for 4.0L; 5W-30 for 2.4L (consult owner's manual for exact specification)

Engine Oil Capacity:

4.0L: 6 US quarts (5.7 L); 2.4L: 5 US quarts (4.7 L)

Coolant Type:

Chrysler HOAT (Hybrid Organic Acid Technology) coolant or equivalent (often pink/orange)

Brake Fluid Type:

DOT 3

Common Issues:

Header Cracking (4.0L engine), Oil Filter Adapter Seal Leaks, Rusty Frame/Body Mounts, Steering Box Wear, Clutch Master/Slave Cylinder Failures, Catalytic Converter Issues (especially on modified vehicles)

Common Issues Electrical:

Wiper Motor failures, Dashboard light failures, PCM issues

Emphasis:

Regular inspection and lubrication of suspension and steering components, particularly if used off-road. Frame rust prevention is critical.

📚 Vehicle History

Brand Origin:

Jeep's heritage traces back to military vehicles of WWII, known for off-road prowess.

Wrangler Lineage:

The TJ is the second generation of the Wrangler, succeeding the YJ and preceding the JK. It marked a significant return to round headlights.

Tj Generation Years:

1997-2006

Manufacturing Plant:

Toledo, Ohio, USA

Production Years For 2002 Model:

Late 2001 - Mid 2002

🏆 Awards & Recognition

Off Road Awards:

Jeep Wrangler (including TJ generation) consistently recognized for off-road capability and icon status by various automotive publications.

Consumer Reports General Rating:

Variable, often noted for off-road prowess but below average for reliability and comfort compared to mainstream SUVs.

Emission Standards:

Compliant with EPA emission standards for the 2002 model year.