🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 1998 Generation: TJ Codes Chassis Code: TJ 👋 Introduction Market Position Positioning: The 1998 Jeep Wrangler TJ represented a significant evolution from its YJ predecessor, offering a coil-spring suspension for improved ride comfort and handling, while retaining its iconic off-road capability. This manual caters to owners and technicians seeking to maintain, diagnose, and repair this robust 4x4 vehicle. Competitive Analysis Competitors: Direct competitors included the Toyota Land Cruiser (FJ series), Nissan Pathfinder, Ford Bronco, and Chevrolet Blazer. The Wrangler TJ distinguished itself with its dedicated off-road focus and open-air design. Key Features Vehicle Attributes: Renowned off-road prowess, coil-spring suspension (Quadra-Coil), iconic styling, available 4.0L 'Power Tech' inline-six engine, durable construction. Manual Value Value Proposition: This comprehensive service repair manual empowers users to perform a wide range of maintenance and repair tasks, saving time and money on professional services and ensuring the longevity and optimal performance of their 1998 Jeep Wrangler. 📋 Manual Details Coverage Areas Primary Engine: 4.0L Inline 6-Cylinder (OHV) Optional Engine: 2.5L Inline 4-Cylinder (OHV) Page Count Estimated Pages: Over 1500 Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, cooling system, ignition system, exhaust system, transmission (manual & automatic), transfer case, drivetrain (axles, driveshafts, differentials) Chassis: Suspension (front & rear), steering system, braking system (front disc, rear drum/disc options), wheels, tires Electrical: 12V electrical system, battery, charging system, starting system, lighting, instruments, gauges, wipers, washers, horn, power accessories, body control modules (BCM), fuses, relays, wiring diagrams Body: Body construction, exterior panels, interior trim, seats, doors, hood, tailgate, convertible top, glass, weatherstripping HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system diagnosis and repair Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, lubrication, battery maintenance, tire rotation Repair: Engine overhaul, transmission overhaul, brake system repair, suspension component replacement, steering system repair, electrical component diagnosis and replacement, body panel repair Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs) interpretation, symptom-based troubleshooting, electrical system diagnostics, mechanical system diagnostics Specifications: Torque specifications, clearances, fluid capacities, electrical values, emissions data Special Tools: Identification and usage of specialized tools required for specific repairs and adjustments Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, advanced electrical diagnostics, and bodywork. 📊 Manual Specifications File Format File Type: PDF Searchable Text: Yes Printable: Yes Print Quality Image Resolution: High resolution, suitable for clear viewing of diagrams and illustrations Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Name: 4.0L Power Tech Inline 6-Cylinder Engine Code: ERH (typically) Displacement: 3960 cc (241.7 cu in) Bore X Stroke: 3.875 in x 3.562 in (98.4 mm x 90.5 mm) Compression Ratio: 8.8:1 Horsepower: 182 hp @ 4,600 rpm Torque: 220 lb-ft @ 3,200 rpm Valvetrain: Overhead Valve (OHV), 12 valves (2 per cylinder) Block Material: Cast Iron Cylinder Head Material: Cast Iron Optional Engine Engine Name: 2.5L Power Tech Inline 4-Cylinder Engine Code: ENH (typically) Displacement: 2469 cc (150.6 cu in) Horsepower: 119 hp @ 4,600 rpm Torque: 145 lb-ft @ 3,200 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) with Multi-Port Injection (MPI) Recommended Fuel: 87 Octane Unleaded Gasoline Fuel Tank Capacity: 15 US gallons (approx.) 🔧 Transmission Standard Type: NV3550 5-Speed Manual Transmission Optional Type: 42RLE 4-Speed Automatic Transmission Transfer Case Type: NP231 Command-Trac (Part-Time, 2.72:1 low range) Features Gear Ratios Manual Nv3550: 1st: 4.01, 2nd: 2.32, 3rd: 1.42, 4th: 1.00, 5th: 0.79, Reverse: 3.55 Fluid Type Manual: Mopar Manual Transmission Lubricant (or equivalent, consult manual for specifics) Fluid Type Automatic: ATF+3 (Chrysler Material Number 04874464) 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 151.3 inches (3843 mm) Width: 66.5 inches (1689 mm) Height: 70.5 inches (1791 mm) (soft top) Ground Clearance: 10.5 inches (267 mm) (approx.) Weights Curb Weight: 3,046 - 3,365 lbs (1382 - 1526 kg), depending on configuration Gross Vehicle Weight Rating Gvwr: 4,200 lbs (1905 kg) Towing Capacity: 2,000 lbs (907 kg) (properly equipped) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3-star (may vary) Active Features Brakes: Front ventilated disc brakes, Rear drum brakes (standard on most models), optional rear disc brakes Anti Lock Brakes ABS: Optional, typically on 4-wheel disc brake systems Passive Features Airbags: Driver and passenger airbags Seat Belts: Three-point front seat belts, lap belts in rear 💡 Technology Features Infotainment Audio System: AM/FM radio with cassette player (optional CD player), 4-speaker system. Driver Assistance Cruise Control: Optional Anti Theft: Factory alarm system (optional) Connectivity Connectivity Features: Limited by modern standards; primarily focused on basic vehicle functions. 🔧 Maintenance Service Intervals Oil Change 40L Engine: Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, whichever comes first (recommend using synthetic blend for longevity). Oil...