🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2003 Generation Generation Designation: TJ (Phase II) Codes Chassis Code: TJ 👋 Introduction Market Position Segment: Compact/Mid-size SUV (Off-Road Focused) Competitive Analysis Key Competitors 2003: Toyota 4Runner, Nissan Xterra, Land Rover Discovery, Ford Explorer Key Features Vehicle Identity: Iconic off-road capability, robust construction, removable doors and top, solid front axle (on most models). Manual Value Proposition Target Audience: Jeep Wrangler TJ owners performing maintenance, repairs, modifications, or seeking in-depth technical understanding. Also valuable for professional mechanics. 📋 Manual Details Coverage Areas Systems Covered: Engine (including repair, timing, lubrication), Fuel and Emissions, Cooling and Heating, Transaxle (manual and automatic), Clutch, Differential, Driveshaft, Steering, Suspension, Brakes (including ABS), Body, Heater and Air Conditioning, Automatic Climate Control, Electrical, Supplemental Restraint System (SRS), Engine Repair, Air Conditioning, Exhaust Emissions Control, Ignition, Wiring Diagrams Page Count Estimated Page Count: Approximately 1500-2000 pages (typical for a comprehensive factory service manual) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine Systems: Engine Removal/Installation, Cylinder Head/Valve Train, Engine Block, Engine Lubrication, Intake Manifold/Exhaust System, Cooling and Heating, Fuel and Emissions, Ignition, Valve Timing Procedures, Chain & Gear Replacement, Tensioner Adjustments, Tensioner Release & Reset Methods, Chain Routing & Sprocket/Gear, Valve Timing Marks Procedures Included Routine Maintenance: Tune-up Procedures, Fluid Checks and Changes, Filter Replacements, Belt Inspection and Replacement, Spark Plug Service Repair And Rebuild: Comprehensive Engine Repair, Cylinder Head Overhaul, Engine Block Machining, Transmission Rebuild (Manual & Automatic), Differential Service, Brake System Overhaul, Steering System Repair, Suspension Component Replacement, HVAC System Repair, Electrical System Diagnosis and Repair Diagnostics: Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Electrical Schematics, System Testing Procedures Installation: Component Removal & Installation, Body Panel Replacement, Accessory Installation Technical Depth Depth Of Information: In-depth coverage from basic maintenance and tune-ups to complete engine, transmission, and driveline rebuilds, including detailed diagnostic procedures, electrical schematics, and specifications. Suitable for professional technicians and experienced DIY enthusiasts. 📊 Manual Specifications File Format File Format: PDF Print Quality Print Quality: High Resolution, Clear Illustrations and Diagrams Binding Type Binding Type: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Searchability Searchable Text: Likely Searchable Text (common for professionally produced PDFs) ⚙️ Engine Specifications Primary Engine Engine 1 Code: 4.0L Inline-6 (e.g., ERH) Engine 1 Displacement: 3952 cc (241 cu in) Engine 1 Configuration: Inline 6-Cylinder, Overhead Valve (OHV) Engine 1 Horsepower: 190 hp @ 4600 rpm (approx.) Engine 1 Torque: 235 lb-ft @ 3200 rpm (approx.) Engine 1 Fuel System: Electronic Multi-Point Fuel Injection (MPI) Engine 1 Bore X Stroke: 98.5 mm x 86.7 mm (3.88 in x 3.41 in) (approx.) Engine 1 Compression Ratio: 8.75:1 (approx.) Engine 2 Engine 2 Code: 2.4L 4-Cylinder (e.g., EDZ) Engine 2 Displacement: 2429 cc (148 cu in) Engine 2 Configuration: Inline 4-Cylinder, Single Overhead Cam (SOHC) Engine 2 Horsepower: 150 hp @ 5200 rpm (approx.) Engine 2 Torque: 170 lb-ft @ 4000 rpm (approx.) Engine 2 Fuel System: Electronic Multi-Point Fuel Injection (MPI) Engine 2 Bore X Stroke: 87.5 mm x 100.0 mm (3.44 in x 3.94 in) (approx.) Engine 2 Compression Ratio: 9.1:1 (approx.) 🔧 Transmission Standard Transmission Standard Engine 4.0L: NV3550 5-Speed Manual Transmission Transmission Standard Engine 2.4L: AX-5 5-Speed Manual Transmission Optional Transmission Optional Engine 4.0L: 42RLE 4-Speed Automatic Transmission Transmission Optional Engine 2.4L: 30RH 3-Speed Automatic Transmission Features Transfer Case: NP231 Command-Trac (standard) or optional NP241OR Rock-Trac (Rubicon models) Gear Ratios Nv3550: 1st: 3.75, 2nd: 2.14, 3rd: 1.34, 4th: 1.00, 5th: 0.76, Reverse: 3.75 (approx.) Gear Ratios 42Rle: 1st: 2.804, 2nd: 1.532, 3rd: 1.000, 4th: 0.715, Reverse: 2.142 (approx.) Fluid Specifications Manual Transmission Fluid: GL-3 or GL-4 75W-90 (e.g., Mopar Manual Transmission Lubricant) Automatic Transmission Fluid: ATF+4 (MS-9602) (e.g., Mopar ATF+4) Transfer Case Fluid: Mopar NV231/NV241 Transfer Case Lubricant or equivalent (e.g., SAE 75W-90 GL-4) 📐 Dimensions Exterior Wheelbase 2Door: 93.4 inches (2372 mm) Wheelbase 4Door Unlimited: 103.4 inches (2626 mm) Length 2Door: 160.5 inches (4077 mm) Length 4Door Unlimited: 170.2 inches (4323 mm) Width Body: 66.5 inches (1689 mm) Height To Top Of Hardtop: 71.5 inches (1816 mm) Weights Curb Weight 2Door Approx: 3325 - 3575 lbs (1508 - 1622 kg) Curb Weight 4Door Unlimited Approx: 3720 - 4025 lbs (1687 - 1826 kg) Towing Capacity Max: 2000 lbs (907 kg) (2-door), 3500 lbs (1588 kg) (4-door Unlimited) Gvw 2Door Max: 4700 lbs (2132 kg) Gvw 4Door Unlimited Max: 5300 lbs (2404 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 5 Star (for 2003 models) Active Features ABS: Available (Standard on some trims, optional on others) Passive Features Airbags: Driver and Passenger Frontal Airbags (Standard) Seatbelts: 3-point front seat belts with pretensioners, 3-point rear seat belts Construction Body Structure: Body-on-frame construction with robust chassis 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional CD/Cassette, optional...