🏷️ Basic Information Identification Make: Jeep Model: Wrangler Year: 2001 Generation: TJ Codes Chassis Code: TJ 👋 Introduction Market Position Vehicle Type: Compact, highly capable off-road SUV. Target Audience: Off-road enthusiasts, outdoor adventurers, and those seeking a rugged, utilitarian vehicle. Competitive Analysis Key Competitors 2001: Toyota Tacoma (SUV variant), Suzuki Vitara, Ford Bronco (though phasing out). Key Features Iconic Design: Classic Jeep seven-slot grille, round headlights, removable doors and top. Off Road Capability: Solid front axle (standard on 2001 TJ), part-time 4WD system, high ground clearance, robust suspension. Convertibility: Full or half doors, soft top or hard top options. 📋 Manual Details Coverage Areas Manual Type: Service Supplement Manual Language: English Format: Likely printed paper format (typical for supplements), potential for PDF versions depending on source. Page Count Estimated Page Count: Variable, typically 100-300 pages for a supplement, depending on the scope of updates. 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair procedures, and specifications for all 2001 Wrangler engines. Transmission: Service and repair information for manual and automatic transmissions offered in 2001. Drivetrain: Coverage of transfer case, axles (Dana 30 front, Dana 35 rear standard), and differentials. Suspension: Front and rear suspension systems, including coil springs, shocks, track bars, and control arms. Steering: Power steering system components, linkage, and adjustments. Brakes: Front disc and rear drum brake systems, ABS (if equipped), hydraulic components, and bleeding procedures. Electrical: Wiring diagrams, component locations, diagnostics for lighting, charging system, ignition, and accessories. Body: Body panel repair, door mechanisms, convertible top service, and interior trim. HVAC: Heating, ventilation, and air conditioning system service and repair. Diagnostics: OBD-II diagnostic trouble codes (DTCs) and troubleshooting flowcharts. Procedures Included Maintenance: Routine service, fluid changes, filter replacements, and lubrication. Troubleshooting: Systematic diagnostic procedures for common and uncommon issues. Repair: Step-by-step instructions for component removal, repair, and reinstallation. Replacement: Detailed guidance for replacing wear items and major components. Adjustments: Procedures for adjusting brakes, clutch, and other mechanical systems. Calibration: Procedures for calibrating sensors and electronic modules where applicable. Technical Depth Depth: Comprehensive technical repair and diagnostic information suitable for professional technicians and advanced DIYers. 📊 Manual Specifications File Format Digital Format: If digital, likely PDF with searchable text and vector graphics. Print Quality Print Quality: High-resolution print for clear diagrams and text (if printed). Binding Type Binding: Likely spiral-bound or perfect-bound for durability and ease of use in a workshop environment. Paper Type Paper Quality: Durable, potentially coated paper to resist grease and wear. ⚙️ Engine Specifications Primary Engine Engine Code: 4.0L Inline-6 (GEMS/NGC) Engine Displacement: 242 cubic inches (3.956 liters) Bore X Stroke: 3.875 in x 3.562 in (98.4 mm x 90.5 mm) Compression Ratio: 8.8:1 Fuel Delivery: Multi-Point Fuel Injection (MPI) Performance Horsepower: 190 hp @ 4,600 rpm (approximate, depending on engine management system variations) Torque: 235 lb-ft @ 3,200 rpm (approximate) Fuel System Fuel Type: Unleaded Regular (87 octane recommended) Fuel Tank Capacity: 15 gallons (standard) Engine Variants Optional Engine: 2.5L (150 cu in) AMC I4 (less common in some markets, phased out in some configurations) Optional Engine Specs: Approx. 118 hp, 145 lb-ft torque (for 2.5L I4) 🔧 Transmission Standard Standard Transmission Type: 6-speed manual (NV3550) Optional Optional Transmission Type: 4-speed automatic (42RLE) Features Transfer Case: NV241OR 'Rock-Trac' (standard on Rubicon, optional on others) or NV231 'Command-Trac' (standard on most models). Gear Ratios Manual Nv3550: 1st: 4.01, 2nd: 2.32, 3rd: 1.50, 4th: 1.00, 5th: 0.77, 6th: 0.73 (approximate ratios, subject to confirmation) Gear Ratios Auto 42Rle: 1st: 2.74, 2nd: 1.57, 3rd: 1.00, 4th: 0.69 (approximate ratios, subject to confirmation) Fluid Specifications Manual Transmission Fluid: Mopar Manual Transmission Lubricant (or equivalent) meeting specification MS-9224. Viscosity: SAE 75W-90. Automatic Transmission Fluid: Mopar ATF+4 (or equivalent) meeting specification MS-9602. Transfer Case Fluid: Mopar NV241 Transfer Case Lubricant (or equivalent) meeting specification MS-9071. 📐 Dimensions Exterior Wheelbase: 93.4 inches (2372 mm) Length: 151.3 inches (3843 mm) Width Without Doors: 66.0 inches (1676 mm) Height To Top Of Hardtop: 71.9 inches (1826 mm) Ground Clearance: Approx. 8.7 inches (221 mm) with standard tires. Weights Curb Weight: 3,360 - 3,500 lbs (approximate, depending on configuration) Gross Vehicle Weight Rating: 4,500 - 4,600 lbs (approximate) Towing Capacity: 2,000 lbs (typically) Cargo Cargo Volume Behind Rear Seat: Approx. 45.2 cu ft Cargo Volume With Rear Seat Folded: Approx. 71.2 cu ft 🛡️ Safety Features Ratings NHTSA Rollover Rating: 3-star (for 2-door models in certain test parameters, common for this era and vehicle type) Active Features ABS: Anti-lock Braking System available on 4-wheel disc brake equipped models. Traction Control: Not typically standard on 2001 models. Passive Features Airbags: Driver and front passenger airbags. Rollover Protection: Reinforced windshield frame and integral roll cage structure. 💡 Technology Features Infotainment Audio System: Basic AM/FM/Cassette or optional CD player. Speakers typically located in dashboard and sound bar. Navigation: Not available from the factory. Driver Assistance Cruise...