🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 1999 Generation Generation Code: TJ Codes Chassis Code: TJ 👋 Introduction Market Position Vehicle Segment: Compact SUV / Off-road Vehicle Target Audience: Enthusiasts, off-roaders, DIY mechanics, independent repair shops. Competitive Analysis Key Competitors 1999: Toyota 4Runner, Ford Bronco, Chevrolet Blazer, Suzuki Vitara. Key Features Design Philosophy: Rugged, go-anywhere capability, iconic Jeep styling, solid axle front suspension (distinguishing feature from many competitors). Manual Purpose: To provide the same comprehensive repair and maintenance information used by authorized Jeep service centers. 📋 Manual Details Coverage Areas Primary Coverage: 1999 Jeep Wrangler (TJ) Secondary Coverage: May include some relevant information for late 1998 and early 2000 models. Page Count Estimated Page Count: 1000+ Manual Type Manual Type: Factory Authorized Service Manual / Workshop Manual Language Language: English Format Format: Printed Book 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul, component testing, specifications, and procedures for all 1999 Wrangler engines. Engine Performance: Engine tuning, diagnostics, emissions control systems, fuel delivery, ignition system. Transmission Manual: Service, repair, and overhaul procedures for the NV3550 5-speed manual transmission. Transmission Automatic: Service, repair, and overhaul procedures for the 32RH 3-speed automatic transmission. Transfer Case: Service and repair for the NP231 Command-Trac part-time 2-speed transfer case. Drivetrain: Axle assembly (Dana 30 front, Dana 35c rear), propeller shafts, U-joints, hub assemblies. Suspension: Front and rear suspension components, springs, shocks, control arms, track bars, bushings. Steering: Power steering system, steering column, steering gear, linkage, alignment procedures. Brakes: Front and rear brake systems (disc front, drum rear), ABS (if equipped), hydraulic system, parking brake. Electrical System: Battery, charging system, starting system, lighting, interior and exterior electrical components. Body And Frame: Body construction, frame, doors, hood, fenders, bumpers, interior trim, convertible top. HVAC: Heating, ventilation, and air conditioning (HVAC) system service and repair. Diagnostics: Diagnostic trouble codes (DTCs), diagnostic procedures, scan tool usage. Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and changes, lubrication, tune-ups. Troubleshooting: Step-by-step diagnostic flowcharts and procedures for common and uncommon issues. Repair: Detailed instructions for component removal, disassembly, repair, reassembly, and installation. Overhaul: Complete engine, transmission, and transfer case overhaul procedures. Special Tools: Identification and usage instructions for specialized tools required for specific repairs. Technical Depth Depth Level: Comprehensive (from basic maintenance to full engine/transmission rebuilds and complex diagnostics). 📊 Manual Specifications File Format File Format Quality: N/A (Printed Book) Print Quality Print Quality: Professional, dealership-quality printing. Binding Type Binding Type: Sturdy binding (e.g., perfect binding, spiral bound for durability in a workshop environment). Paper Type Paper Type: Durable, high-quality paper suitable for workshop use, resistant to oil and grease. ⚙️ Engine Specifications Primary Engine Engine Code 1: 4.0L Inline-6 OHV (AMC 242) Displacement 1: 3960 cc (242 cubic inches) Bore X Stroke 1: 3.875 in x 3.562 in (98.4 mm x 90.5 mm) Compression Ratio 1: 8.8:1 Horsepower 1: 182 hp @ 4,200 rpm Torque 1: 220 lb-ft @ 3,200 rpm Optional Engine Engine Code 2: 2.5L Inline-4 OHV (AMC 150) Displacement 2: 2469 cc (150 cubic inches) Horsepower 2: 119 hp @ 4,700 rpm Torque 2: 145 lb-ft @ 3,000 rpm Fuel System Fuel Delivery: Multi-port Fuel Injection (MPFI) Fuel Type: Unleaded gasoline Recommended Octane: 87 octane (minimum) 🔧 Transmission Standard Transmission Type Standard: NV3550 5-speed Manual Transmission Optional Transmission Type Optional: 32RH 3-speed Automatic Transmission Features Transfer Case: NP231 Command-Trac (Part-time, 2-speed) Manual Transmission Fluid Spec: Mopar Manual Transmission Lubricant (or equivalent, consult manual for specific PN/specs) Automatic Transmission Fluid Spec: ATF+3 (or equivalent, consult manual for specific PN/specs) 📐 Dimensions Exterior Wheelbase Short: 93.4 inches (2372 mm) Wheelbase Long: 103.4 inches (2626 mm) Length Short: 151.3 inches (3843 mm) Length Long: 161.3 inches (4097 mm) Width: 66.5 inches (1689 mm) Height: 70.5 inches (1791 mm) Weights Curb Weight Approx Short: 3,200 - 3,500 lbs (1451 - 1588 kg) Curb Weight Approx Long: 3,300 - 3,700 lbs (1497 - 1678 kg) Gross Vehicle Weight Rating Gvwr: Varies by configuration, typically around 4,750 - 5,000 lbs. 🛡️ Safety Features Ratings NHTSA Rollover Resistance Rating: 4/5 Star (for 4-door model, 2-door may differ) Active Features ABS: Optional Anti-lock Braking System (ABS) on rear wheels, or 4-wheel ABS available on some models. Passive Features Airbags: Driver and passenger airbags. Seatbelts: Front 3-point seat belts with pretensioners, rear lap and shoulder belts. Roll Cage: Integrated roll cage structure. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player, optional CD player. Basic speaker setup. Driver Assistance ABS Availability: Optional, typically on rear wheels or 4-wheel. Cruise Control: Optional. Connectivity Connectivity Features: None (This era of vehicle predates widespread electronic connectivity features). 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles or 3 months (severe duty) / 7,500 miles or 6 months (normal duty, consult manual for specifics). Engine Oil Filter Change: Replace with oil change. Recommended...