🏷️ Basic Information Identification Make: Jeep Model: Wrangler Model Code: TJ Model Year: 2004 Generation Generation Code: TJ Codes Vin Prefix: 1J4 👋 Introduction Market Position Target Audience: Do-it-yourself enthusiasts and experienced mechanics Value Proposition: Inexpensive way to maintain and repair the vehicle, saving money on labor costs. Competitive Analysis Advantage: Comprehensive, factory-sourced information with detailed illustrations and diagrams. Key Features Content Quality: 100% complete and intact, no missing/corrupt pages or sections. Usability: Printable pages, searchable text, detailed illustrations, exploded diagrams, drawings, and photos. 📋 Manual Details Coverage Areas Vehicle Lines: Wrangler 4x4 (LHD), Wrangler 4x4 (RHD) Series: SE, X, Sport, Sahara, Rubicon Engines: 2.4L 4-cylinder DOHC Gasoline, 4.0L 6-cylinder Gasoline Page Count Total Pages: 2436 Manual Type Type: Complete Official Service and Repair Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download 📖 Manual Coverage Systems Covered Engine Systems: Engine, Fuel System, Exhaust System, Cooling System, Ignition Control, Engine Management Drivetrain: Transmission (Manual and Automatic), Transfer Case, Differential & Driveline Chassis: Suspension, Steering, Brakes, Tires/Wheels, Frame & Bumpers Electrical: Power System, Audio/Video, Chime/Buzzer, Electronic Control Modules (ECMs), Horn, Instrument Cluster, Lamps, Restraints (Airbags), Speed Control, Vehicle Theft Security, Wipers/Washers, Wiring Schematics Body: Body, Heating & Air Conditioning, Emissions Control Procedures Included Maintenance: Lubrication, Routine Maintenance, Fluid Changes, Filter Replacements, Inspections Repair: Diagnostic procedures, component removal and installation, troubleshooting, rebuilding, refurbishment, restoration Diagnostics: Detailed diagnostic trouble codes (DTCs), component testing, electrical troubleshooting Technical Depth Depth: Comprehensive; covers everything from basic maintenance to complete engine and transmission rebuilds, including detailed wiring schematics and diagnostic procedures. Scope: Factory-level repair and maintenance information. 📊 Manual Specifications File Format Requirements: Adobe PDF Reader & WinZip Zoom Capability: Yes (Zoom In/Out) Print Quality Printability: Fully Printable Readability: Searchable and Bookmarked Binding Type Binding: Digital (PDF, no physical binding) Paper Type Paper Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine 1 Displacement: 2.4 Liters Engine 1 Configuration: Inline 4-cylinder Engine 1 Valve Train: DOHC (Double Overhead Camshaft) Engine 1 Fuel Type: Gasoline Engine 2 Displacement: 4.0 Liters Engine 2 Configuration: Inline 6-cylinder Engine 2 Valve Train: OHV (Overhead Valve) - based on the legendary AMC 242 engine Engine 2 Fuel Type: Gasoline Performance Engine 2 Horsepower Approx: 190 hp @ 4600 rpm Engine 2 Torque Approx: 235 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Multi-port Fuel Injection (MPI) 🔧 Transmission Standard Transmission Type: Manual transmission available (e.g., NV3550 5-speed), Automatic transmission available (e.g., 30/42LE 4-speed) Optional Transmission Options: Depending on trim and engine: AX-5 5-speed manual, NV3550 5-speed manual, 32RH 3-speed automatic, 42RLE 4-speed automatic. Features Transfer Case: Command-Trac NV241 GII (standard), Rock-Trac NV241 DHD (Rubicon models) Fluid Specifications Manual Transmission Fluid: Typically Mopar Manual Transmission Lubricant or equivalent meeting Chrysler specification MS-9224 (e.g., Red Line MT-90). Automatic Transmission Fluid: Mopar ATF+4 (MS-9602) or equivalent. Transfer Case Fluid: Mopar NV241 Transfer Case Lubricant (MS-9074) or equivalent (often a good quality 75W-90 synthetic gear oil). 📐 Dimensions Exterior Wheelbase Short: 93.4 inches (2372 mm) Wheelbase Long: 103.4 inches (2626 mm) - Not typical for 2004 TJ, primarily for LJ Unlimited Weights Curb Weight Approx Min: 3250 lbs (1474 kg) - 2.4L 2-door Curb Weight Approx Max: 3700 lbs (1678 kg) - 4.0L Rubicon 2-door 🛡️ Safety Features Ratings NHTSA Frontal Driver: 4 Stars (for 2004 models) NHTSA Frontal Passenger: 4 Stars (for 2004 models) Active Features Braking System: Front: Solid Disc Brakes; Rear: Disc or Drum Brakes (depending on model/options). ABS available as an option. Passive Features Airbags: Driver and Passenger Frontal Airbags Seatbelts: 3-point front seat belts with pretensioners, 3-point rear seat belts (if equipped). 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD or Cassette player with optional CD changer and amplified systems available. Speaker configurations vary by trim. Driver Assistance Cruise Control: Optional on most models. Connectivity Electrical Systems: Basic electrical systems with an emphasis on functionality and durability for off-road use. Comprehensive wiring diagrams are a key feature of the manual. 🔧 Maintenance Service Intervals Oil Change Recommendation: Every 3,000-7,500 miles (5,000-12,000 km) or every 6-12 months, depending on driving conditions and oil type used. Consult manual for specific recommendations based on engine. Tire Rotation: Every 5,000-7,500 miles (8,000-12,000 km). Transmission Fluid Change: Automatic: Approximately every 30,000-60,000 miles (48,000-96,000 km). Manual: Inspect periodically, change as needed or at higher mileage intervals. Fluid Specifications Engine Oil Specification: SAE 10W-30 or SAE 5W-30 for the 4.0L engine (check owner's manual for exact recommendation based on temperature). SAE 5W-30 for the 2.4L engine. Always use API certified oil. Coolant Type: Mopar Antifreeze/Coolant (MS-7170) or equivalent (typically a green ethylene glycol-based coolant). Brake Fluid Type: DOT 3 Known Issues Common Problems 4 0L: Cracking cylinder heads (less common in later models), exhaust manifold leaks, death wobble (steering/suspension related), water pump leaks, oil filter adapter leaks. Common Problems 2 4L: Less powerful than...