🏷️ Basic Information Identification Make: Jeep Model: Wrangler Model Generation: TJ Year: 2004 👋 Introduction Market Position Vehicle Segment: Compact Sport Utility Vehicle (SUV) / Off-Road Vehicle Competitive Analysis Key Competitors 2004: Toyota Tacoma (4x4), Nissan Xterra, Ford Bronco (earlier models) Key Features Vehicle Identity: Iconic off-road capability, open-air driving experience, rugged construction. Manual Value Proposition Target User: Enthusiasts, DIY mechanics, and professional technicians working on the 2004 Jeep Wrangler TJ. Completeness: Comprehensive coverage across multiple specialized diagnostic manuals ensures complete repair and maintenance understanding. 📋 Manual Details Coverage Areas Primary Manual Type: Service Shop Manual Diagnostic Manual Types: Powertrain, Transmission, Body, Chassis General Coverage: Body, Chassis, Electrical Format File Format: PDF Operating Systems Compatibility: Windows, Linux, Mac Features Searchability: Fully Bookmarked and Searchable Printability: Printable pages or entire manual Source Origin: Manufacturer Written Intended Audience Usage: Dealership Mechanics 📖 Manual Coverage Systems Covered Powertrain: Gasoline Engine (2.4L 4cyl, 4.0L 6cyl), Automatic Transmission (42RLE), Manual Transmissions (NV-1500, NV-3550), Transfer Cases (NV-231, NV-241) Electrical: Full Electrical System Coverage including Wiring Diagrams Chassis: Suspension, Steering, Brakes, Driveline, Frame Body: Body Construction, Exterior Components, Interior Trim, Doors, Glass Procedures Included Diagnostics: Technical Diagnostic Procedures for all covered systems Repair And Maintenance: Disassembly and Installation Procedures, Routine Maintenance, Troubleshooting Technical Depth Scope: Most Complete Workshop Manual Available, Technical Diagnostic Procedures Visuals Illustrations: Numerous Illustrations & Diagrams 📊 Manual Specifications File Format File Type: PDF PDF Features: Bookmarked, Searchable Print Quality Print Option: Printable for specific pages or entire manual Binding Type Binding: N/A (PDF Format) Paper Type Paper Quality: N/A (PDF Format) ⚙️ Engine Specifications Primary Engine 2 4L Engine Code: ED1 (World Gas Engine) Configuration: Inline 4-cylinder Displacement: 2.4 Liters (2429 cc) Bore X Stroke: 3.44 x 3.25 inches (87.4 x 82.5 mm) Compression Ratio: 9.1:1 Fuel Delivery: Multi-port Electronic Fuel Injection (MPI) Horsepower: 150 hp @ 5200 rpm Torque: 170 lb-ft @ 4000 rpm Primary Engine 4 0L Engine Code: ERH (PowerTech) Configuration: Inline 6-cylinder Displacement: 4.0 Liters (3960 cc) Bore X Stroke: 3.88 x 3.41 inches (98.4 x 86.7 mm) Compression Ratio: 8.8:1 Fuel Delivery: Multi-port Electronic Fuel Injection (MPI) Horsepower: 190 hp @ 4600 rpm Torque: 235 lb-ft @ 3200 rpm 🔧 Transmission Automatic Transmission Model: 42RLE Type: 4-Speed Automatic with Overdrive Fluid Type: ATF+4 (MS-9602) Manual Nv1500 Transmission Model: NV-1500 Type: 5-Speed Manual Fluid Type: NVG 550 (See Manual for Specifics) Manual Nv3550 Transmission Model: NV-3550 Type: 5-Speed Manual Fluid Type: NVG 550 (See Manual for Specifics) Transfer Case Nv231 Transfer Case Model: NV-231 Type: Command-Trac Part-Time, 2.72:1 Low Range Fluid Type: MS-9424 (Chrysler Spec. for NV231) Transfer Case Nv241 Transfer Case Model: NV-241 Type: Optional Heavy Duty Transfer Case Fluid Type: MS-9424 (Chrysler Spec. for NV241) 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 151.4 inches (3845 mm) Width: 66.5 inches (1689 mm) Height: 73.5 inches (1867 mm) (Soft Top) Ground Clearance: Approx. 8.8 inches (224 mm) Weights Curb Weight 2 4L: Approx. 3250 lbs (1474 kg) Curb Weight 4 0L: Approx. 3350 lbs (1519 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3/5 stars (indicative of SUV design) Active Features Braking: Front Disc / Rear Drum (standard), Optional 4-Wheel Disc Brakes Traction Control: Optional Trac-Lok™ Limited Slip Differential Passive Features Airbags: Driver and Passenger Frontal Airbags Rollover Protection: Integral Sport Bar with Sport Cage 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player (optional cassette), 4 or 6 speaker systems. Dashboard Features: Basic analog gauges, HVAC controls, minimal digital displays. Driver Assistance ABS: Standard on all models. Cruise Control: Optional on most trims. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 6 months, whichever comes first (refer to manual for specific conditions). Tire Rotation: Every 7,500 miles Transmission Fluid Change: Refer to manual; typically every 30,000-60,000 miles depending on usage. Fluid Specifications Engine Oil 4 0L: SAE 10W-30 (API classification SG or higher), Capacity: 5 quarts (4.7 liters) with filter Engine Oil 2 4L: SAE 5W-30 (API classification SG or higher), Capacity: 4.5 quarts (4.3 liters) with filter Coolant: Mopar® Antifreeze/Coolant (5 Year / 100,000 Mile Formula) or equivalent HOAT coolant, 50/50 mix with distilled water. Known Issues Common Wear Items: Clutch wear (manual transmission), radiator leaks, water pump, U-joints, exhaust system. Common Engine Issues 4 0L: Cracking cylinder head (less common on later models, but still a potential issue), rear main seal leaks, oil filter adapter leaks. Common Electrical Issues: Corrosion in wiring harnesses, blower motor resistor failure, ABS sensor issues (if equipped). 📚 Vehicle History Brand Heritage Jeep Legacy: Jeep's heritage dates back to World War II with the Willys MB, defining the off-road vehicle segment. Model Evolution Wrangler Tj Introduction: The TJ Wrangler was introduced for the 1997 model year, replacing the YJ. It featured a significant redesign, including coil springs instead of leaf springs, bringing a more comfortable ride...