🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2004 Generation Code: TJ 👋 Introduction Market Position Market Segment: Compact SUV, Off-Road Vehicle Competitive Analysis Key Competitors: Toyota Tacoma, Nissan Frontier, Land Rover Defender (earlier models) Key Features Design Philosophy: Rugged, trail-capable, open-air experience Vehicle Identity: Iconic Jeep capability, solid axles, removable doors and top 📋 Manual Details Coverage Areas Coverage Scope: Complete Factory Service Repair Page Count Estimated Pages: Hundreds (Printable) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Downloadable (Likely PDF) 📖 Manual Coverage Systems Covered Engine: Detailed diagnosis, repair, overhaul for all TJ powertrain options Transmission: Service and repair for manual and automatic transmissions Drivetrain: Axles, differentials, transfer case, driveshafts, CV joints Suspension: Front and rear suspension components, steering linkage Brakes: Hydraulic system, ABS (if equipped), disc and drum brake service Electrical: Wiring diagrams, component testing, battery, charging, ignition systems Body And Frame: Body panel repair, interior trim, convertible top service HVAC: Air conditioning, heating, ventilation system diagnosis and repair Fuel System: Fuel pump, injectors, lines, evaporative emissions control Cooling System: Radiator, water pump, thermostat, hoses, fan Exhaust System: Mufflers, catalytic converter, pipes, hangers Emissions Control: EGR, PCV, O2 sensors, evaporative emissions system Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements Troubleshooting: Diagnostic charts and procedures for common and uncommon faults Repair: Step-by-step repair instructions for all major components Overhaul: Complete engine and transmission rebuild procedures Diagnostics: Fault code interpretation, component testing, circuit analysis Installation: Component replacement and installation guidelines Specifications: Torque values, clearances, alignments, fluid capacities Technical Depth Depth: Comprehensive, from basic checks to complete engine rebuilds 📊 Manual Specifications File Format File Format: PDF (Portable Document Format) Print Quality Printability: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Text Search: Searchable text for quick information retrieval ⚙️ Engine Specifications Primary Engine Engine Code Common: 4.0L Inline-6 (G/E) - PowerTech Engine Displacement Primary: 3952 cc (241 cubic inches) Horsepower Primary: 190 hp @ 4,600 rpm Torque Primary: 235 lb-ft @ 3,200 rpm Optional Engine Engine Code Optional: 2.4L Inline-4 (D) - World Gas Engine Engine Displacement Optional: 2429 cc (148 cubic inches) Horsepower Optional: 150 hp @ 5,200 rpm Torque Optional: 177 lb-ft @ 3,800 rpm Fuel System Fuel Delivery: Multi-port Electronic Fuel Injection (MPI) Fuel Type: Unleaded Gasoline Cooling System Coolant Type: Chrysler/Mopar HOAT (50/50 mixture with distilled water) 🔧 Transmission Standard Transmission Type Standard: 6-Speed Manual (NV3550) Optional Transmission Type Optional: 4-Speed Automatic (42RLE) Features Transfer Case: Selec-Trac NV242 (Command-Trac NP231 also common) Fluid Specifications Manual Transmission Fluid: NV3550: Mopar Manual Transmission Lubricant (MS-9224) or equivalent, 2.1 liters (2.2 qts) Automatic Transmission Fluid: 42RLE: ATF+4 (MS-9602), 7.2 liters (7.6 qts) total capacity 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 151.4 inches (3845 mm) Width: 66.5 inches (1689 mm) Height: 71.7 inches (1821 mm) Ground Clearance: ~9.7 inches (246 mm) (varies with tire size/suspension) Weights Curb Weight Std Engine: Approx. 3,500 lbs (1588 kg) Towing Capacity: 2,000 lbs (907 kg) Payload Capacity: Approx. 800-900 lbs (363-408 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3 stars (Class II SUV) Active Features ABS: Optional on most models, standard on some later TJ's Traction Control: Not generally available on 2004 TJ models Passive Features Airbags: Driver and Passenger Front Airbags Seatbelts: Three-point front, two-point rear (lap belts) 💡 Technology Features Infotainment Audio System: AM/FM stereo with CD player, optional Infinity speaker system Navigation: Not available from factory Driver Assistance Cruise Control: Optional Connectivity Bluetooth: Not available from factory 🔧 Maintenance Service Intervals Oil Change Interval Severe: 3,000 miles (4,800 km) or 3 months Oil Change Interval Normal: 5,000-7,500 miles (8,000-12,000 km) or 6-12 months (depending on oil used) Air Filter Replacement: Every 15,000 miles (24,000 km) or as needed Spark Plug Replacement 4.0L: Approx. 100,000 miles (160,000 km) (Champion Copper Plus or equivalent) Fluid Specifications Engine Oil Capacity 4.0L: 5 US quarts (4.7 liters) with filter (API SG or higher, 10W-30 recommended) Engine Oil Capacity 2.4L: 5 US quarts (4.7 liters) with filter (API SG or higher, 5W-30 recommended) Coolant Capacity: Approx. 10.5 quarts (9.9 liters) for 4.0L, 7.7 quarts (7.3 liters) for 2.4L Brake Fluid: DOT 3 Known Issues Common Issues 4.0L: Oil leaks (rear main seal, valve cover gasket), occasional death wobble (steering/suspension related), exhaust manifold cracks Common Issues 2.4L: Oil consumption, head gasket issues in some cases Common Issues Transmission: NV3550: Clutch wear, 2WD models may experience rear main seal issues from output shaft. 42RLE: Occasional solenoid issues, torque converter shudder Common Issues Drivetrain: U-joint wear, differential seal leaks, transfer case chain stretch Common Issues Suspension: Worn control arm bushings, track bar issues (leading to death wobble), worn ball joints Common Issues Electrical: Cracked wiring harnesses (especially near engine bay), failing instrument cluster components, C101 connector issues 📚...