🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2004 Product Type: Full Service Repair Manual Codes Chassis Code: TJ 👋 Introduction Market Position Vehicle Class: Compact SUV / Off-Road Vehicle Key Selling Points: Off-road capability, iconic design, open-air driving experience, robust construction Competitive Analysis Direct Competitors: Toyota FJ Cruiser (later models), Hummer H3, Land Rover Defender (import) Segment Differentiation: Unmatched off-road prowess and Jeep's heritage Key Features Platform Architecture: Body-on-frame construction, solid front and rear axles (standard) Body Styles: 2-door convertible (standard), 4-door Unlimited (optional) 📋 Manual Details Coverage Areas Geographic Coverage: North America Market Segment: Aftermarket / Professional Service Page Count Estimated Page Count: 1500+ Manual Type Manual Type: Factory-Authorized Service Manual Content Focus: Maintenance, Troubleshooting, Repair, Diagnostics, Wiring Diagrams Language Language: English Format Format: Digital (PDF) Searchability: Fully Searchable Text Printability: Printable Pages 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, timing systems, cylinder heads, block, pistons, crankshaft, camshafts, valve train Engine Performance: Fuel injection, ignition system, emission controls, cooling system, lubrication system, turbocharger (if applicable) Transmission Manual: Service and repair of NV3550 (AX-15 replacement) 5-speed manual transmission Transmission Automatic: Service and repair of 42RLE 4-speed automatic transmission Drivetrain: Transfer case (NV241 G/D), front and rear axles (Dana 30, Dana 35c/44 Rear), driveshafts, CV joints, U-joints, wheel hubs Suspension: Front and rear suspension systems, coil springs, shock absorbers, control arms, sway bars, bushings, steering knuckles Steering: Power steering system, steering gear, steering column, tie rods, drag links, power steering pump Brakes: Front and rear brake systems (disc/disc or disc/drum depending on configuration), ABS system (if equipped), parking brake, hydraulic lines, master cylinder, calipers, rotors, pads Electrical System: 12V battery system, charging system (alternator), starting system (starter motor), lighting system, power distribution, fuses, relays, ignition switch, body control module (BCM) Body And Frame: Body panels, doors, hood, fenders, bumpers, interior trim, seating, convertible top systems, chassis frame inspection and repair HVAC: Heating, ventilation, and air conditioning (HVAC) system, blower motor, heater core, A/C compressor, refrigerant system, climate controls Safety Systems: Airbag system (SRS), seat belts, anti-lock braking system (ABS) diagnostics Powertrain Control Modules: PCM (Powertrain Control Module) diagnostics, component location, and wiring Procedures Included Scheduled Maintenance: Oil changes, filter replacements, fluid level checks, tire rotations, belt inspections, spark plug replacement Troubleshooting: Diagnostic procedures for all major systems, symptom-based troubleshooting guides Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment for all covered systems Diagnostic Trouble Codes: OBD-II (On-Board Diagnostics II) code definitions and diagnostic trees Wiring Diagrams: Complete electrical schematics for all vehicle systems, including power distribution and component tracing Torque Specifications: Detailed torque values for all critical fasteners throughout the vehicle Special Tools: Identification and usage instructions for specialized tools required for certain repair procedures Maintenance Schedule: Recommended service intervals based on mileage and time Technical Depth Depth Of Coverage: Comprehensive rebuild procedures, advanced diagnostics, component-level repair Diagrams And Illustrations: Numerous exploded views, diagrams, and step-by-step illustrations to aid understanding 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Print Quality Resolution: High-resolution, suitable for professional printing Binding Type Binding: N/A (Digital File) Paper Type Paper: N/A (Digital File) ⚙️ Engine Specifications Primary Engine Engine Code: 2.4L DOHC (Optional - Turbocharged in some markets/trims) Engine Displacement: 2429 cc (147.7 cu in) Engine Type: Inline-4 (I4) Bore X Stroke: 87.5 mm x 100.0 mm (3.44 in x 3.94 in) Compression Ratio: 9.1:1 Horsepower: 147 hp @ 5200 rpm Torque: 165 lb-ft @ 4000 rpm Alternative Engine 1 Engine Code: 4.0L OHV (Standard) Engine Displacement: 3960 cc (241.6 cu in) Engine Type: Inline-6 (I6) - "PowerTech" Bore X Stroke: 98.4 mm x 89.0 mm (3.87 in x 3.50 in) Compression Ratio: 8.8:1 Horsepower: 190 hp @ 4600 rpm Torque: 235 lb-ft @ 3200 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (MPI - Multi-Point Injection) Fuel Type: Unleaded Gasoline Engine Notes Engine Management: Chrysler PPEC (Powertrain Performance Engine Controller) 🔧 Transmission Standard Transmission Transmission Type: NV3550 5-Speed Manual Gear Ratios 1: 4.01:1 (1st), 2.32:1 (2nd), 1.40:1 (3rd), 1.00:1 (4th), 0.78:1 (5th), 3.73:1 (Reverse) Optional Transmission Transmission Type: 42RLE 4-Speed Automatic Gear Ratios Auto: 2.80:1 (1st), 1.53:1 (2nd), 1.00:1 (3rd), 0.71:1 (4th), 2.17:1 (Reverse) Features Transfer Case: NV241 G/D Command-Trac (2-speed, part-time 4WD with 4-Hi, 4-Lo, 2-Hi, Neutral modes) Fluid Specifications Manual Transmission Fluid: Mopar Manual Transmission Lubricant (or equivalent API GL-4, SAE 75W-90) Automatic Transmission Fluid: ATF+4 (Mopar Automatic Transmission Fluid) Transfer Case Fluid: Mopar Transfer Case Lubricant (or equivalent NV241 specification) 📐 Dimensions Exterior Dimensions 2Door Wheelbase: 93.4 in (2372 mm) Length: 151.4 in (3845 mm) Width: 66.5 in (1689 mm) Height: 70.9 in (1801 mm) Exterior Dimensions 4Door Unlimited Wheelbase: 103.4 in (2626 mm) Length: 161.4 in (4100 mm) Width: 66.5 in (1689 mm) Height: 70.9 in (1801 mm) Weights Curb Weight 2Door: 3633 - 3845 lbs (1648 - 1744 kg) (Varies...