🏷️ Basic Information Identification Make: Jeep Model: Wrangler Model Code: TJ Year: 1998 Generation Generation Name: TJ Generation Start Year: 1997 Generation End Year: 2006 Codes Vin Prefix: 1J4 👋 Introduction Market Position Vehicle Segment: Compact SUV / Off-Road Vehicle Target Audience: Off-road enthusiasts, Jeep owners seeking to perform their own maintenance and repairs. Competitive Analysis Key Competitors 1998: Toyota Land Cruiser, Land Rover Discovery, Ford Bronco (discontinued late '96 but still relevant in used market) Key Features Vehicle Usp: Renowned off-road capability, iconic styling, solid axles (front and rear), coil spring suspension (unlike previous YJ leaf springs), robust powertrain options. Manual Value Proposition: Provides detailed, factory-level information essential for maintaining and repairing the iconic TJ Wrangler, empowering owners and independent mechanics. 📋 Manual Details Coverage Areas Primary Coverage: Full Service, Repair, Maintenance, Troubleshooting, Diagnostics Secondary Coverage: Wiring Diagrams, Specifications, Special Tools Page Count Estimated Page Count: Over 1000 pages (typical for comprehensive factory service manuals) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (likely PDF, based on description) 📖 Manual Coverage Systems Covered Engine: Engine Mechanical, Engine Control System (ECM), Fuel System, Ignition System, Cooling System, Exhaust System, Lubrication System, Emission Controls Transmission: Manual Transmission (AX-5, NV3550), Automatic Transmission (42RE), Transfer Case (NP231) - Overhaul, Diagnosis, and Repair Drivetrain: Front Axle (Dana 30), Rear Axle (Dana 35c), Driveshafts, CV Joints, Wheel Bearings Suspension: Front Coil Springs, Rear Leaf Springs, Shock Absorbers, Control Arms, Panhard Bar, Steering Linkage Brakes: Front Disc Brakes, Rear Drum Brakes, ABS (if equipped), Parking Brake System, Hydraulic Lines and Components Steering: Power Steering System, Steering Column, Steering Gear Electrical: Battery, Charging System, Starting System, Lighting System, Instrument Cluster, Body Control Modules, Power Windows, Power Locks, Wiper System, Horn Body: Body Panels, Doors, Hood, Fenders, Bumpers, Seats, Interior Trim, Convertible Top System, Hardtop Removal/Installation Climate Control: HVAC System, Heater Core, A/C System Components, Blower Motor, Controls Safety Systems: Airbag System (SRS) Wiring Diagrams: Complete Color Wiring Diagrams for all Systems Procedures Included Maintenance: Oil Change, Filter Replacements, Fluid Checks and Top-offs, Tire Rotation, Brake Inspection, Belt Inspection and Replacement, Spark Plug Replacement, Air Filter Replacement Diagnostics: On-Board Diagnostics (OBD-II), DTC Code Interpretation, Symptom-Based Troubleshooting Guides Repair: Engine Overhaul, Transmission Rebuild, Differential Service, Brake System Repair, Suspension Component Replacement, Steering System Repair, Electrical Component Replacement, Body Panel Repair Troubleshooting: Step-by-step diagnostic procedures for common and uncommon faults Specifications: Torque Specifications, Clearances, Fluid Capacities, Electrical Specifications Special Tools: Identification and usage of specialized tools required for specific procedures Technical Depth Depth: Comprehensive (from basic fluid changes to full engine and transmission rebuilds) 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable Text Printability: Printable Print Quality Image Resolution: High-resolution diagrams and illustrations Binding Type Binding: N/A (Digital) Paper Type Paper Quality: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Code: 4.0L I-6 OHV (High Output) Engine Displacement: 242 cubic inches (3956 cc) Engine Configuration: Inline 6-Cylinder Valvetrain: Overhead Valve (OHV), 12 Valves Bore X Stroke: 3.875 in x 3.560 in (98.4 mm x 90.4 mm) Compression Ratio: 8.8:1 Performance Horsepower Hp: 182 hp @ 4,600 rpm Torque Lb Ft: 220 lb-ft @ 3,000 rpm Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Regular (87 Octane Recommended) Engine Variants Optional Engine: 2.5L 4-Cylinder (AMC 150) - 118 hp @ 4,700 rpm / 135 lb-ft @ 3,500 rpm (less common for 1998, but available) 🔧 Transmission Standard Standard Transmission Type: 5-Speed Manual Transmission (AX-5) Optional Optional Transmission Type: 4-Speed Automatic Transmission (42RE) Features Transfer Case: Command-Trac NV231 Part-Time, Gear-Driven Transfer Case Fluid Specs Manual Transmission Fluid: Mopar Manual Transmission Lubricant (MS-9224) or equivalent SAE 75W-90 Synthetic Gear Oil Automatic Transmission Fluid: ATF+4 (MS-9602) or equivalent Mopar Automatic Transmission Fluid Transfer Case Fluid: Mopar NV231 Fluid (MS-2562) or equivalent SAE 75W-90 Synthetic Gear Oil 📐 Dimensions Exterior Wheelbase Inches: 93.4 in Length Inches: 151.5 in Width Inches: 66.5 in Height Inches: 71.9 in (with soft top) Ground Clearance Inches: 10.2 in (approx.) Approach Angle: 41 degrees Departure Angle: 32 degrees Breakover Angle: 25 degrees Weights Curb Weight Lbs: 3,520 - 3,780 lbs (approx., depending on configuration) Gross Vehicle Weight Rating Gvwr Lbs: 4,850 lbs Wheels Tires Standard Wheel Size: 15 x 8 inches Standard Tire Size: 30 x 9.50R15 OWL Bolt Pattern: 5 x 4.5 inches (5 x 114.3 mm) 🛡️ Safety Features Ratings NHTSA Rollover Rating: 4-star (for 1998 model year, though testing standards differ) Active Features ABS Availability: Optional (Rear Anti-lock Brakes on some models) Passive Features Airbag System: Driver and Passenger Frontal Airbags (SRS) Seat Belts: Front 3-point, Rear Lap/Shoulder belts 💡 Technology Features Infotainment Audio System: AM/FM Cassette player standard, optional CD player, optional premium sound system. Speakers: 4 or 6 speaker options Driver Assistance Cruise Control: Optional Tow Hitch: Optional Connectivity OBD Ii Port:...