🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2004 Codes Chassis Code: TJ Vin Code: 1"J" 👋 Introduction Market Position Segment: Compact SUV / Off-Road Vehicle Philosophy: Renowned for its legendary off-road capability and iconic design. Competitive Analysis Competitors: Toyota 4Runner, Land Rover Defender (historically), Suzuki Samurai (historically). Key Features Distinctive Features: Solid front and rear axles, removable doors and roof, high ground clearance, robust 4x4 system. Target Audience: Off-road enthusiasts, adventure seekers, outdoor lifestyle users. 📋 Manual Details Coverage Areas Main Coverage: Complete service, repair, and maintenance for the 2004 Jeep Wrangler (TJ). Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Manual / Workshop Manual Language Primary Language: English Format Digital Format: PDF 📖 Manual Coverage Systems Covered Engine Mechanical: Engine overhaul, cylinder head, block, pistons, crankshaft, camshaft, timing, lubrication, cooling system. Engine Performance: Fuel injection, ignition system, emission controls, engine diagnostics. Transmission Manual: NV3550 (5-speed) service, repair, and overhaul. Transmission Automatic: 42RLE (4-speed automatic) service, repair, and overhaul. Transfer Case: NV241OR (241OR 'Rock Trac') service and repair. Drivetrain Axles: Dana 30 front axle, Dana 35c or Dana 44 rear axle service, differential overhaul, axle shafts. Brakes: Hydraulic system, ABS, front disc brakes, rear disc brakes (if equipped), parking brake, bleeding procedures. Suspension: Front and rear suspension components, shock absorbers, springs, control arms, bushings, steering linkage. Steering: Power steering system, steering gear, steering column, steering wheel, alignment specifications. Electrical System: Battery, charging system, starting system, lighting, wipers, horn, power accessories, fuses, relays. Body Exterior: Body panels, doors, hood, tailgate, bumpers, windshield, convertible top, soft top removal/installation. Body Interior: Dashboard, seats, carpets, trim panels, HVAC system components. HVAC: Air conditioning, heating, ventilation, climate control system diagnostics and repair. Restraints: Airbag system, seat belts. Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and changes, tune-ups, brake service, tire rotation. Troubleshooting: Diagnostic trouble codes (DTCs), symptom-based troubleshooting guides, electrical schematics. Repair: Detailed step-by-step instructions for component removal, installation, and repair. Overhaul: Complete engine, transmission, and axle overhaul procedures. Diagnostics: Using OBD-II scan tools, reading sensor data, diagnosing electrical issues. Wiring Diagrams: Comprehensive electrical wiring diagrams for all systems. Technical Depth Depth: Comprehensive from basic owner maintenance to advanced engine rebuilds and electrical diagnostics. 📊 Manual Specifications File Format File Type: PDF Searchability: Fully searchable text content for quick information retrieval. Printability: Printable pages, allowing for offline use and reference. Print Quality Resolution: High-resolution scans ensuring clarity of diagrams and text. Binding Type Binding: N/A (Digital PDF format) Paper Type Paper: N/A (Digital PDF format) ⚙️ Engine Specifications Primary Engine Engine Code: 3.7L V6 (JK generation began, TJ primarily used 4.0L inline-6) Engine Type: Inline 6-Cylinder, Overhead Valve (OHV) Displacement: 3956 cc (241.4 cubic inches) Bore X Stroke: 3.875 in x 3.580 in (98.4 mm x 90.9 mm) Performance Horsepower: 190 hp @ 4,600 rpm Torque: 235 lb-ft @ 3,200 rpm Fuel System Induction: Electronic Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline, 87 Octane Minimum Engine Management ECU: Engine Control Unit (ECU) controlled ignition and fuel. Cooling System Capacity: Approx. 10.0 quarts (9.5 liters) with A/C Lubrication Oil Capacity: Approx. 5.0 quarts (4.7 liters) with filter Oil Type: SAE 10W-30 API SJ/SL 🔧 Transmission Standard Transmission Type: NV3550 5-Speed Manual Transmission Optional Transmission Type: 42RLE 4-Speed Automatic Transmission Features Clutch: Hydraulically actuated single dry plate clutch. Automatic Transmission Fluid: ATF+4 (MS-9602) Manual Transmission Fluid: GL-3 or GL-4 (preferred) SAE 75W-90 gear oil. Transfer Case Transfer Case Model: NV241OR (241OR 'Rock Trac') Transfer Case Fluid: NV241OR Transfer Case Fluid (Mopar specific or equivalent) 📐 Dimensions Exterior Wheelbase: 93.4 inches (2,372 mm) Length: 160.4 inches (4,074 mm) Width: 73.4 inches (1,864 mm) Height: 70.2 inches (1,783 mm) with hardtop Ground Clearance: Approx. 8.8 inches (224 mm) Weights Curb Weight: Approx. 3,750 - 4,000 lbs (1,701 - 1,814 kg) Gross Vehicle Weight Rating: Approx. 4,950 lbs (2,245 kg) Towing Capacity: 2,000 lbs (907 kg) Wheels Tires Standard Wheel Size: 15-inch Standard Tire Size: LT215/75R15 (optional LT225/75R16) Bolt Pattern: 5x4.5 inches (5x114.3 mm) 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4 out of 5 stars (Two-wheel drive), 3 out of 5 stars (Four-wheel drive) Active Features ABS: Anti-lock Braking System (ABS) available, typically on rear wheels only for 2004 models. Passive Features Airbags: Driver and passenger front airbags. Seat Belts: Three-point front seat belts, lap belts for rear passengers (if equipped). 💡 Technology Features Infotainment Audio System: Basic AM/FM/CD stereo system, optional Infinity sound system. Navigation: Not typically factory-equipped on 2004 models, aftermarket options available. Driver Assistance Cruise Control: Available on most trim levels. Connectivity Aux Input: Rarely factory equipped, aftermarket solutions common. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles (8,000-12,000 km) or 6 months, whichever comes first. Air Filter Replacement: Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on conditions. Spark Plug Replacement: Every 100,000 miles (160,000...