🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2004 Codes Chassis Code: TJ 👋 Introduction Market Position Positioning: Iconic Off-Road Vehicle, Known for Trail Capability and Simplicity Competitive Analysis Competitors: Land Rover Defender, Toyota FJ Cruiser (though slightly later), Suzuki Samurai Key Features Features Vehicle: Solid Front and Rear Axles, Command-Trac NV241OR Transfer Case, Removable Doors and Top Value Proposition: Enables DIY maintenance and repair, saving significant costs and empowering owners. 📋 Manual Details Coverage Areas Manual Type: Factory Service Manual Language: English Format: Digital Download (PDF) Page Count Estimated Pages: 2000+ 📖 Manual Coverage Systems Covered Engine: All Engine Variants (e.g., 4.0L Inline 6) Transmission: Manual & Automatic Transmissions Drivetrain: 4WD System, Axles, Transfer Case Suspension: Front & Rear Suspension, Steering System Brakes: Hydraulic Brake System, ABS (if equipped) Electrical: Wiring Diagrams, Lighting, Accessories, ECU Diagnostics Body: Body & Frame Repair, Doors, Panels, Convertible Top HVAC: Heating, Ventilation, and Air Conditioning Fuel: Fuel System Components, Fuel Pump, Injectors Exhaust: Exhaust System Components Cooling: Cooling System, Radiator, Thermostat Procedures Included Maintenance: Scheduled Maintenance, Fluid Changes, Filter Replacements Diagnostics: Troubleshooting Guides, Symptom-Based Diagnostics Repair: Step-by-Step Repair Procedures for All Major Components Disassembly Assembly: Detailed Reassembly and Disassembly Instructions Wiring Diagrams: Comprehensive Electrical Schematics Specifications: Torque Values, Tolerances, P/N, Diagnostic Trouble Codes (DTCs) Technical Depth Depth: Complete Professional Level Coverage (from basic maintenance to full engine rebuilds) 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable Text Content Printability: Printable Pages Print Quality Image Resolution: High-Resolution Images and Diagrams Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 6-Cylinder, Overhead Valve (OHV) Engine Code: AMC 242 (4.0L) Displacement: 3960 cc (242 cubic inches) Bore X Stroke: 3.875 in x 3.570 in (98.4 mm x 90.7 mm) Compression Ratio: 8.8:1 Horsepower Net: 190 hp @ 4750 rpm Torque Net: 235 lb-ft @ 3200 rpm Fuel System Fuel Type: Unleaded Gasoline Fuel Delivery: Multi-Port Fuel Injection (MPI) Fuel Pump Pressure: 39-49 PSI Engine Management Ignition System: Distributorless Ignition System (DIS) ECU Type: NGC (Next Generation Controller) 🔧 Transmission Standard Transmission Type: NV3550 5-Speed Manual Optional Transmission Type: 42RLE 4-Speed Automatic Features Transfer Case: NV241OR Command-Trac (Part-Time, 2.72:1 Low Range) Fluid Specifications Manual Transmission Fluid: Axle & Manual Transmission Lubricant (API GL-5), SAE 75W-90 Automatic Transmission Fluid: ATF+4 (MS-9602) 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 150.9 inches (3833 mm) Width: 66.5 inches (1689 mm) Height: 71.9 inches (1826 mm) Ground Clearance: 10.1 inches (257 mm) Weights Curb Weight: Approx. 3,300 - 3,600 lbs (1497 - 1633 kg) Gross Vehicle Weight Rating: 4,450 lbs (2018 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3 Stars (Based on 2004 Model Year Data) Active Features ABS: Optional Anti-lock Braking System (4-wheel disc brakes) Traction Control: Not typically available on 2004 models Passive Features Airbags: Driver and Passenger Front Airbags Seat Belts: 3-Point Front Seat Belts, Lap Belts in Rear 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD Player, Optional Infinity Speakers Connectivity: Basic, primarily focused on audio features. Driver Assistance Features: Limited; emphasis on robust mechanicals rather than electronic aids. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles (8,000 km) or 6 months, whichever comes first Air Filter Replacement: Every 15,000 miles (24,000 km) or annually Spark Plug Replacement: Every 100,000 miles (160,000 km) with Quad SP-402 (or equivalent) Transmission Fluid Change Auto: Every 60,000 miles (96,000 km) Transmission Fluid Change Manual: Every 60,000 miles (96,000 km) Fluid Specifications Engine Oil Type: SAE 10W-30 (API SJ or higher) Engine Oil Capacity: 5 Quarts (4.7 Liters) with filter change Coolant Type: Chrysler OAT (Orange) or equivalent, 50/50 mix with distilled water Brake Fluid Type: DOT 3 Known Issues Common Problems: Leaking rear main seal, transmission input shaft seal leaks, exhaust manifold cracks, rust on frame and body panels, death wobble (if suspension/steering components are worn). 📚 Vehicle History Brand Heritage Heritage: Jeep brand has a rich history dating back to WWII, known for rugged, go-anywhere vehicles. Model Evolution Generation Name: TJ Generation Production Start Year: 1996 Key Changes For 2004: Minor interior updates, potential for new exterior colors. Production Manufacturing Location: Toledo, Ohio, USA 🏆 Awards & Recognition Recognitions Offroad Capability: Consistently rated highly for off-road prowess by automotive journalists and enthusiasts. Ratings Customer Satisfaction: Generally high for its target demographic and intended use.