🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2004 Codes Chassis Code: TJ 👋 Introduction Market Position Vehicle Segment: Compact SUV / Off-Road Vehicle. Target Audience: Enthusiasts, off-roaders, DIY mechanics, and owners seeking in-depth repair knowledge. Competitive Analysis Primary Competitors Segment: Bronco, Samurai (historically); later influenced crossover SUVs. Key Features Vehicle Appeal: Renowned off-road capability, iconic design, open-air driving experience, robust platform. 📋 Manual Details Coverage Areas Coverage Overview: Comprehensive service and repair coverage for the 2004 Jeep Wrangler (TJ). Page Count Estimated Page Count: 1500+ Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanical, lubrication, cooling, fuel, ignition, exhaust, emission controls, engine electrical. Transmission Drivetrain: Manual transmission (NV3550), automatic transmission (42RLE), transfer case (NV241OR), clutch, driveshafts, axles, differentials. Suspension Steering: Front and rear suspension (solid axles, coil springs), steering system, power steering. Brakes: Front disc brakes, rear drum brakes (standard), Anti-lock Braking System (ABS) if equipped. Electrical Electronics: Battery, charging system, starting system, lighting, instruments, body control module (BCM), fuse box diagrams, wiring schematics. Body Chassis: Body construction, doors, panels, bumpers, interior trim, frame, exhaust system routing. HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system operation and repair. Procedures Included Maintenance Procedures: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement. Diagnostic Troubleshooting: Step-by-step diagnostic procedures for common and uncommon faults, troubleshooting charts, symptom-based troubleshooting. Repair Overhaul: Complete disassembly, inspection, repair, and reassembly procedures for all major mechanical and electrical components. Special Tools: Identification and usage instructions for specialized tools required for specific repairs. Technical Depth Depth Of Coverage: Factory-level technical details, including torque specifications, clearances, diagnostic trouble codes (DTCs), and repair sequences. 📊 Manual Specifications File Format Digital Format: Searchable PDF with high-resolution diagrams and images. Print Quality Image Quality: Clear, crisp images and diagrams suitable for digital viewing and potential printing. Binding Type Binding Type Physical Analogy: N/A (Digital Format) Paper Type Paper Type Physical Analogy: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: 3UZFE (for 4.0L V6), 425 (for 2.4L I4 - less common in US spec for 2004, but possible) Engine Name Common: 4.0L "SOHC" V6 (PowerTech) Displacement Liters: 4.0 Cylinders: V6 Valvetrain: SOHC (Single Overhead Camshaft) Performance Horsepower Hp: 190 @ 4600 RPM Torque Lb Ft: 235 @ 3200 RPM Fuel System Fuel Delivery: Multi-Port Fuel Injection (MPFI) Fuel Type: Unleaded Gasoline (87 octane recommended) 🔧 Transmission Standard Transmission Type Standard: 5-Speed Manual Transmission (NV3550) Optional Transmission Type Optional: 4-Speed Automatic Transmission (42RLE) Features Transfer Case: Command-Trac NV241OR (Part-Time, 2-High, 4-High, Neutral, 4-Low) 📐 Dimensions Exterior Wheelbase Inches: 93.4 Length Inches: 157.4 (2-door) Width Inches: 72.1 Height Inches: 73.4 Weights Curb Weight Lbs Approx: 3500-3700 Towing Capacity Lbs: 2000 🛡️ Safety Features Ratings NHTSA Front Driver Impact: Not Rated (Vehicle Design) NHTSA Front Passenger Impact: Not Rated (Vehicle Design) IIHS Side Impact: Acceptable Active Features ABS: Optional Passive Features Airbags: Driver and Passenger Front Airbags Seatbelts: Front 3-point, Rear Lap and Shoulder (if equipped) 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional premium sound system. Dashboard Features: Analog gauges, basic climate controls, optional power windows/locks. Driver Assistance Driver Assistance Features: Limited; primarily focused on mechanical reliability and off-road capability. ABS optional. Connectivity Connectivity Options: Minimal. Basic power outlets. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 6 months, whichever comes first (synthetic oil may extend). Engine Air Filter Replacement: Every 15,000-30,000 miles or annually. Spark Plug Replacement: Every 30,000-60,000 miles (depending on plug type). Fluid Specifications Engine Oil Type: SAE 5W-30 (API Certified) Engine Oil Capacity Quarts: 5.0 (with filter) Coolant Type: Chrysler HOAT (Hybrid Organic Acid Technology) - Pink Color Transmission Fluid Type Manual: Mopar Manual Transmission Lubricant (or equivalent) - NV3550 specific. Transmission Fluid Type Automatic: ATF+4 (MS-9602) Transfer Case Fluid Type: Mopar NV241OR Transfer Case Lubricant (or equivalent, e.g., SAE 75W-85 GL-5) Differential Fluid Type: SAE 75W-90 (GL-5) - consider limited-slip additive if applicable. Known Issues Common Problems: Radiator leaks, heater core issues, exhaust manifold cracks (4.0L), clutch wear, axle seal leaks, steering box wear, "death wobble" (suspension/steering linkage issues). Common Issues Maintenance Focus Areas: Regular inspection of suspension components, steering linkages, and drivetrain seals is crucial. 📚 Vehicle History Brand Heritage Jeep Legacy: Roots in WWII Willys MB, continuous evolution of iconic off-road vehicles. Model Evolution Tj Generation: TJ Generation (1997-2006), replaced YJ, introduced coil springs. Production Manufacturing Location: Toledo, Ohio, USA 🏆 Awards & Recognition Recognitions Off Road Awards: Consistently recognized by off-road publications and enthusiasts for its capability. Ratings Consumer Reports Reliability: Variable; known issues can impact ratings, but robust mechanicals generally praised.