🏷️ Basic Information

Make:

Jeep

Model:

Wrangler

Year:

2002

Chassis Code:

TJ

👋 Introduction

Segment:

Compact SUV / Off-Road Vehicle

Target Audience:

Off-road enthusiasts, DIY mechanics, professional repair shops.

Competitors 2002:

Toyota Tacoma, Nissan Xterra, Suzuki Vitara, Land Rover Defender (though more premium).

Vehicle Philosophy:

Ruggedness, off-road capability, open-air experience, utilitarian design.

Manual Value Proposition:

Provides dealership-level technical information for DIY repair and maintenance, saving significant costs.

📋 Manual Details

Coverage Scope:

Comprehensive service and repair for all major vehicle systems.

Estimated Pages:

Approximately 2000-3000 pages (typical for dealer-level service manuals).

Type:

Service and Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Powertrain:

Engine (4.0L I6, 2.4L I4), transmission (42RLE Automatic, NV3550 Manual), transfer case (NV241GHD), axles (Dana 30 Front, Dana 35/44 Rear).

Chassis:

Suspension (Solid Axle, Coil Springs), steering, brakes (ABS available), exhaust.

Electrical:

Body control module (BCM), engine control module (ECM), ignition system, lighting, power accessories, instrument cluster, diagnostic trouble codes (DTCs).

Body:

Body panels, doors, interior trim, seats, HVAC system, convertible top mechanisms.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement.

Repair:

Engine overhaul, transmission rebuild, brake system repair, suspension component replacement, steering system repair, electrical component diagnosis and replacement, body panel repair.

Diagnostics:

System-specific troubleshooting guides, diagnostic trouble code (DTC) interpretation and resolution, electrical circuit tracing, component testing.

Special Tools:

Identification and usage of specialized tools required for specific repair procedures.

Depth:

Detailed diagnostic procedures, component-level repair, full system overhauls, torque specifications, wiring diagrams, exploded views, and component identification.

📊 Manual Specifications

Quality:

High-resolution PDF with searchable text and clear, legible diagrams.

Scalability:

Pages can be printed at original size for detailed work.

Format Type:

Digital (PDF)

Digital Storage:

Accessible on computers, tablets, and smartphones.

⚙️ Engine Specifications

Engine Code 1:

ERH

Engine Description 1:

4.0L (3952cc) Overhead Valve (OHV) Inline 6-Cylinder (I6)

Bore X Stroke 1:

3.875 in x 3.563 in (98.4 mm x 90.5 mm)

Compression Ratio 1:

8.8:1

Horsepower 1:

190 hp @ 4600 rpm

Torque 1:

235 lb-ft @ 3200 rpm

Engine Code 2:

ENP

Engine Description 2:

2.4L (2429cc) DOHC Inline 4-Cylinder (I4)

Horsepower 2:

147 hp @ 5200 rpm

Torque 2:

170 lb-ft @ 4000 rpm

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 Octane Recommended)

ECM Type:

1999-2002 Jeep Wrangler PCM (Powertrain Control Module).

🔧 Transmission

Type:

NV3550 5-Speed Manual Transmission

Type:

42RLE 4-Speed Automatic Transmission

Clutch Type:

Hydraulically Actuated Single Dry Plate (Manual Transmission)

Type:

NV241GHD (Command-Trac) 2-Speed Part-Time Rock-Trac Transfer Case

Fluid Type:

ATF+4 (MS-9602)

Capacity:

Approx. 2.5 Quarts (2.4 Liters)

Fluid Type:

ATF+4 (MS-9602)

Capacity:

Approx. 8.0 Quarts (7.6 Liters)

Fluid Type:

Mopar NV241 HD Transfer Case Fluid (or equivalent Mopar specification)

Capacity:

Approx. 2.0 Quarts (1.9 Liters)

📐 Dimensions

Wheelbase:

93.4 inches (2372 mm)

Overall Length:

151.3 inches (3843 mm)

Overall Width:

66.5 inches (1689 mm)

Overall Height:

71.0 inches (1803 mm)

Ground Clearance:

Approx. 8.5 - 10.3 inches (216 - 262 mm) depending on tire size.

Curb Weight:

Approx. 3300 - 3500 lbs (1497 - 1588 kg) depending on configuration.

Cargo Volume Behind Front Seats:

Approx. 45.4 cu ft (1286 L)

Cargo Volume Behind Rear Seats:

Approx. 13.4 cu ft (380 L)

🛡️ Safety Features

NHTSA Front Driver Side Impact:

4 stars (for 2002 model year)

NHTSA Front Passenger Side Impact:

4 stars (for 2002 model year)

ABS:

Optional Anti-lock Braking System (ABS) on rear wheels only for earlier TJ models; four-wheel ABS became more common later. The manual will detail the specific system.

Airbags:

Driver and Passenger Frontal Airbags.

Seatbelts:

Three-point front seat belts, lap belts for rear passengers.

💡 Technology Features

Audio System:

Factory AM/FM/CD player, optional Infinity speaker system. Aftermarket options common.

Cruise Control:

Available factory cruise control.

Wiring Harnesses:

Detailed wiring diagrams in the manual are crucial for diagnosing and repairing any electrical issues, including aftermarket accessory installations.

🔧 Maintenance

Interval:

Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, depending on driving conditions (severe vs. normal). Refer to manual for specific guidance.

Oil Specification 4 0L:

SAE 10W-30 API Service SJ or higher (per owner's manual for 2002). Manual will provide precise spec.

Oil Capacity 4 0L:

6.0 Quarts (5.7 Liters) with filter change.

Interval Automatic:

Inspect every 15,000 miles (24,000 km), change as needed based on driving conditions and fluid condition (typically 30,000-60,000 miles or 48,000-96,000 km).

Interval Manual:

Inspect every 15,000 miles (24,000 km), change as needed based on driving conditions and fluid condition (typically 30,000-60,000 miles or 48,000-96,000 km).

Coolant Type:

Chrysler/Mopar OAT (Organic Acid Technology) Antifreeze/Coolant, Pink color (50/50 mix with distilled water).

Brake Fluid Type:

DOT 3 or DOT 4 Brake Fluid.

Power Steering Fluid:

Mopar Power Steering Fluid or equivalent (e.g., Dexron III/Mercon compatible).

Common Problems 1:

Cracking of the rear main seal (4.0L I6), cooling system leaks (radiator, water pump, hoses), exhaust manifold cracks (4.0L I6), death wobble (requires suspension alignment/component checks), various interior trim creaks/rattles.

Common Problems 2:

Actuator failure in HVAC blend doors, worn clutch components (manual transmission), aging fuel pump/module, potential for frame rust in northern climates.

📚 Vehicle History

Jeep Legacy:

Jeep's history dates back to WWII, renowned for its off-road prowess and ruggedness.

Tj Generation:

The TJ generation (1997-2006) represented a significant upgrade from the YJ, returning to the iconic round headlights and introducing coil springs for a vastly improved ride and articulation.

2002 Updates:

Minor refinements for the 2002 model year, building upon the established TJ platform.

Assembly Location:

Toledo, Ohio, USA.

🏆 Awards & Recognition

Off Road Awards:

Consistently recognized by off-road publications and enthusiasts for its trail capability and modification potential.

Consumer Reports:

Consumer Reports ratings for this era often reflected its utilitarian nature and off-road focus, with mixed reviews on on-road comfort and reliability compared to mainstream SUVs. The manual provides the data to maintain it optimally.