🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2002

Generation:

TJ

Chassis Code:

TJ

👋 Introduction

Positioning:

The definitive guide for owners and technicians seeking to maintain, diagnose, and repair the iconic Jeep Wrangler TJ generation.

Competitors:

Other generic online repair guides or simplified owner's manuals lack the depth and specific technical detail of this comprehensive workshop manual.

Value Proposition:

Empowers users with factory-level repair information, saving time and money on maintenance and repairs.

Target Audience:

Jeep Wrangler TJ owners, DIY mechanics, automotive repair shops

📋 Manual Details

Coverage Scope:

Complete Workshop Service Repair

Estimated Page Count:

1500-2000

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

Downloadable PDF

📖 Manual Coverage

Powertrain:

Engine, Transmission, Transfer Case, Drivetrain

Chassis:

Suspension (Front & Rear), Steering, Brakes, Frame

Electrical:

Wiring Diagrams, Lighting, Instrumentation, Power Distribution, Ignition, Charging

Body:

Body Panels, Doors, Seats, Trim, HVAC

Cooling System:

Radiator, thermostat, water pump, fan clutch, coolant hoses, heater core.

Fuel System:

Fuel pump, fuel filter, fuel injectors, fuel pressure regulator, evaporative emission control (EVAP) system.

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, pipes, oxygen sensors.

Maintenance:

Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks

Repair:

Engine Overhaul, Transmission Rebuild, Brake System Repair, Electrical Component Replacement

Troubleshooting:

Diagnostic Procedures, Fault Code Interpretation, Symptom-Based Troubleshooting

Body And Frame:

Frame straightening, collision repair procedures, body panel replacement, convertible top service.

Diagnostics:

Engine performance diagnostics, electrical system troubleshooting, HVAC system diagnostics.

Depth:

Comprehensive: From basic fluid changes to full engine and transmission rebuilds, including diagnostics and electrical schematics.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable Text

Printable:

Printable Pages

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Diagrams Illustrations:

Includes detailed diagrams, schematics, and illustrations for all procedures.

⚙️ Engine Specifications

Engine Code:

4.0L Inline-6 (OHV) - PowerTech

Engine Displacement:

242 cu in (3952 cc)

Engine Configuration:

Inline 6-Cylinder, Overhead Valve (OHV)

Horsepower:

190 hp @ 4600 rpm

Torque:

235 lb-ft @ 3200 rpm

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 Octane Recommended)

Ignition Type:

Distributorless Ignition System (DIS) with Coil-on-Plug (COP) or Distributor Ignition (depending on exact build date/spec)

Thermostat Rating:

195°F (90.5°C) typically

🔧 Transmission

Transmission Type:

NV3550 5-Speed Manual Transmission

Transmission Type:

42RLE 4-Speed Automatic Transmission

Transfer Case Manual:

NV231 HD Command-Trac (Part-time, 2.72:1 low range)

Transfer Case Automatic:

NP241OR/2410 with Selec-Trac (Full-time 4WD option available)

Nv3550 Fluid:

Mopar Manual Transmission Lubricant (MS-9224) or equivalent (e.g., Castrol Syntrans)

42Rle Fluid:

ATF+4 (MS-9602)

📐 Dimensions

Wheelbase:

93.4 inches (2372 mm)

Length:

151.4 inches (3845 mm)

Width:

66.5 inches (1689 mm)

Height:

71.3 inches (1811 mm)

Ground Clearance:

10.2 inches (259 mm)

Approach Angle:

47.5 degrees (approx.)

Departure Angle:

39.2 degrees (approx.)

Breakover Angle:

21.3 degrees (approx.)

Curb Weight Manual:

~3460 lbs (~1570 kg)

Curb Weight Automatic:

~3530 lbs (~1600 kg)

🛡️ Safety Features

NHTSA Rollover Resistance:

3-star

Brakes:

Front Disc, Rear Drum (ABS optional/standard on some trims)

Airbags:

Driver and Passenger Frontal Airbags

💡 Technology Features

Audio System:

Basic AM/FM stereo with CD player or cassette player, optional premium sound system.

Connectivity:

Limited by era; primarily analog systems. Auxiliary inputs not standard.

ABS:

Optional on some models, standard on others. Always verify for specific vehicle.

🔧 Maintenance

Oil Change Interval:

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

Engine Air Filter:

Replace every 15,000-30,000 miles or as needed based on inspections.

Spark Plugs:

Replace approximately every 100,000 miles for platinum or iridium plugs (check specific plug type).

Engine Oil Capacity:

6 US quarts (5.7 Liters) with filter, using SAE 10W-30 (check owner's manual for exact spec).

Coolant Capacity:

Approx. 11 US quarts (10.4 Liters) for 4.0L engine.

Brake Fluid:

DOT 3

Power Steering Fluid:

Mopar Power Steering Fluid or ATF+4 (check manual for specific recommendation)

Transfer Case Fluid:

NP231/NP241: Mopar NV241 Transfer Case Lubricant (MS-9224) or equivalent.

Common Problems:

Cracking exhaust manifolds (especially on 4.0L), distributor drive gear wear, rear main seal leaks, NP241 transfer case chain stretch, automatic transmission cooler line leaks, interior water leaks.

Common Problems Continued:

Front axle U-joint wear, front axle seal leaks, sway bar links, steering stabilizer failure.

📚 Vehicle History

Jeep Legacy:

The Jeep Wrangler TJ (1997-2006) is the fourth generation of the iconic Jeep Wrangler, directly descended from the original Willys MB WWII Jeep and subsequent CJ models. It marked a significant evolution with the introduction of coil springs, replacing the leaf springs of its predecessors, enhancing ride comfort and off-road articulation.

Tj Introduction:

The TJ Wrangler was introduced for the 1997 model year, replacing the YJ. Key changes included coil-spring suspension, revised interior, and a more powerful engine.

Manufacturing Plant:

Toledo South Assembly, Toledo, Ohio, USA

🏆 Awards & Recognition

Off Road Reputation:

Consistently recognized as one of the most capable off-road vehicles available for its price point, renowned for its solid axles (front and rear) and aftermarket support.