🏷️ Basic Information Identification Make: Jeep Model: Wrangler Generation: TJ Years Covered: 2002, 2003, 2004 Codes Vehicle Platform: TJ 👋 Introduction Market Position Segment: Iconic off-road utility vehicle, established presence in the 4x4 market Competitive Analysis Competitors Period: Direct competition included Toyota 4Runner, Nissan Xterra, Land Rover Defender (in some markets) Key Features Design Philosophy: Simplicity, ruggedness, off-road capability, open-air driving experience Iconic Status: Renowned for its trail-worthiness and aftermarket customization potential 📋 Manual Details Coverage Areas All Models Trims: Yes Repair Scope: All repairs A-Z Information Type: Specific to model, not generic Page Count Estimated Pages: Likely over 1000 pages (typical for comprehensive workshop manuals) Manual Type Type: Complete Workshop Service Repair Manual Language Language: English Format Format: Likely PDF or printed book (common for this type of product) 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, overhaul for 4.0L I6 and 2.4L I4 engines Transmission: Automatic (42RLE) and Manual (AX-5, NV3550) transmission service, rebuild, troubleshooting Drivetrain: Transfer case (NV231, NV241), Dana 30 (front) and Dana 35/Dana 44 (rear) axles, driveshafts, U-joints, differentials Suspension: Coil springs, shock absorbers, control arms, sway bars, steering linkage Brakes: Front disc, rear drum/disc brakes, ABS system (if equipped), master cylinder, power booster, lines, calipers, pads, rotors Steering: Power steering system, steering gear, column, tie rods, drag link Electrical: Comprehensive wiring diagrams, lighting, ignition, starting, charging system, battery, fuses, relays, body control modules Emissions: EVAP system, catalytic converter, O2 sensors, EGR (if equipped) HVAC: Air conditioning, heater, blower motor, controls, refrigerant system Body: Interior trim, exterior body panels, doors, hoods, fenders, bumpers, soft top/hardtop removal and installation Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, tire rotation Troubleshooting: Diagnostic charts, symptom-based problem diagnosis, fault codes Repair: Detailed step-by-step instructions for component replacement and repair Rebuilds: Engine, transmission, and axle overhaul procedures Diagnostics: OBD-II diagnostics, sensor testing, circuit testing Specifications Data: Torque specifications, alignment data, clearances, tolerances Body Repair: Body panel alignment, collision repair data, frame straightening procedures Exhaust System: Diagnosis and replacement of exhaust manifolds, catalytic converters, mufflers, and pipes Fuel System Repair: Fuel pump replacement, fuel filter service, fuel injector diagnosis and cleaning Technical Depth Depth: Comprehensive, suitable for professional technicians and advanced DIYers Wiring Diagrams: Detailed, section-specific wiring schematics for all major systems. Diagnostic Codes: Includes common Diagnostic Trouble Codes (DTCs) and their interpretation. Specifications Tables: Extensive tables of torque values, measurements, and clearances. 📊 Manual Specifications File Format Searchability: Likely searchable text (if PDF), facilitating quick information retrieval Print Quality Illustrations: High-quality diagrams, schematics, and photographic illustrations Binding Type Physical Binding: If printed: Spiral-bound or perfect-bound for durability and lay-flat use Paper Type Physical Paper: If printed: Durable, oil-resistant paper stock suitable for workshop environments ⚙️ Engine Specifications Primary Engine Engine 1: 4.0L (3952cc) Inline-6 OHV "Power Tech I-6" (242 ci) Engine 1 Power: Approx. 190 hp @ 4600 rpm Engine 1 Torque: Approx. 235 lb-ft @ 3200 rpm Secondary Engine Engine 2: 2.4L (2429cc) Inline-4 OHV "Power Tech" (148 ci) Engine 2 Power: Approx. 145 hp @ 5200 rpm Engine 2 Torque: Approx. 190 lb-ft @ 3600 rpm Performance Compression Ratio 4.0L: 8.8:1 Bore Stroke 4.0L: 3.88 in x 3.41 in (98.5 mm x 86.6 mm) Fuel System Fuel Delivery: Multi-port Electronic Fuel Injection (MPI) Fuel Type: Unleaded gasoline Engine Management ECM: Chrysler NGC (Next Generation Controller) or similar 🔧 Transmission Standard Manual Transmission: AX-5 5-speed manual (standard on 2.4L, some 4.0L models) Optional Manual Transmission Optional: NV3550 5-speed manual (heavy-duty, standard on most 4.0L models) Automatic Transmission: 42RLE 4-speed automatic (optional on 4.0L models) Features Transfer Case Options: NV231 (Command-Trac) part-time, NV241OR (Rubicon Rock-Trac) part-time with 4:1 low range Fluid Specs Manual Fluid: Refer to manual for specific fluid type (e.g., NV3550 often uses Mopar Manual Transmission Lubricant or equivalent) Automatic Fluid: ATF+4 (Mopar) 📐 Dimensions Exterior Wheelbase 2 Door: 93.4 inches (2372 mm) Length 2 Door: 151.5 inches (3848 mm) Width 2 Door: 66.5 inches (1689 mm) Height 2 Door: 71.5 inches (1816 mm) Wheelbase 4 Door: 103.4 inches (2626 mm) - Not applicable to 2002-2004 2-door models Weights Curb Weight Approx: 3500-4000 lbs (depending on engine and options) Towing Capacity Approx: 2000 lbs 🛡️ Safety Features Ratings NHTSA Rollover Rating 2002: 4 out of 5 stars (2-door) Active Features ABS: Optional Anti-lock Braking System (ABS) on rear wheels; 4-wheel ABS available on some models Passive Features Airbags: Driver and passenger front airbags Rollover Protection: Integrated roll cage structure 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional Infinity speaker systems Driver Assistance Traction Control: Not commonly equipped, primarily driver-controlled 4WD system Connectivity Aux Input: Not standard, may be aftermarket addition 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles or 6-12 months (refer to manual for specific oil type and interval) Transmission Fluid Change: Automatic: 60,000-100,000 miles; Manual: Inspect, replace as...
Worn track bar, ball joints, tie rod ends, steering box looseness
Common Issue Drivetrain:
U-joint failure, axle seal leaks, differential gear wear (especially with off-road use)
📚 Vehicle History
Brand Heritage
Jeep Legacy:
Direct descendant of the original Willys MB WWII Jeep, known for ruggedness and off-road prowess.
Model Evolution
Tj Generation:
The TJ generation (1997-2006) introduced coil springs for a vastly improved ride and handling over its leaf-sprung predecessors (YJ).
Production
Manufacturing Location:
Toledo, Ohio, USA
🏆 Awards & Recognition
Recognitions
Off Road Capability:
Consistently recognized as a benchmark for off-road capability by automotive publications.
Ratings
Consumer Reports:
Varied reliability ratings over the years, often impacted by specific model year and component issues, but generally respected for its core functionality.