🏷️ Basic Information Identification Make: Jeep Model: Cherokee Model Code: XJ Year: 1991 Codes Chassis Code: XJ 👋 Introduction Market Position Positioning: Iconic compact SUV, known for its off-road capability, ruggedness, and affordability in its segment. Competitive Analysis Competitors 1991: Ford Explorer, Chevrolet S-10 Blazer, Toyota 4Runner, Nissan Pathfinder. Key Features Offroad Prowess: Renowned for its leaf-spring solid rear axle and optional Command-Trac/Selec-Trac 4WD systems, providing excellent off-road articulation and capability. Durability: Built with a robust unibody construction and reliable powertrains, earning a reputation for longevity. Versatility: Practical for daily driving, capable for trailering, and adept at off-road excursions. 📋 Manual Details Coverage Areas Coverage: Complete vehicle repair, maintenance, and diagnostics Page Count Estimated Pages: 1500+ Manual Type Type: Factory Service Manual (FSM) / Digital Repair Manual Language Language: English Format Format: Digital (likely PDF) 📖 Manual Coverage Systems Covered Engine: All engine types, including 4.0L I6 and 2.5L I4, engine mechanical, lubrication, cooling, fuel, ignition, exhaust, emissions control Transmission: Manual (AX-4, AX-5) and Automatic (AW4, 30RH) transmissions, removal, installation, overhaul, diagnostics Drivetrain: Four-wheel drive system (Command-Trac, Selec-Trac), transfer case, front and rear axles, driveshafts, CV joints, U-joints Suspension: Front (leaf spring/solid axle, later models coil spring) and Rear (leaf spring) suspension systems, shocks, struts, bushings, alignment Steering: Power steering system, steering gear, linkage, power steering pump Brakes: Front disc brakes, rear drum brakes, anti-lock braking system (ABS) if equipped, brake hydraulics, parking brake Electrical: Battery, charging system, starting system, ignition system, lighting, instrument panel, power accessories, wiring diagrams, fuses, relays Body: Body construction, exterior trim, interior trim, doors, windows, seats, bumpers, chassis lubrication HVAC: Heating, Ventilation, and Air Conditioning (HVAC) system, components, refrigerant, diagnosis Emissions: Emissions control systems, catalytic converter, EGR, PCV, evaporative emission control Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, lubrication, tire rotation Troubleshooting: Diagnostic procedures for common and uncommon faults, symptom-based troubleshooting charts Repair: Step-by-step repair instructions for all major vehicle components and systems, including engine overhauls, transmission rebuilds, brake repairs, electrical diagnostics Replacement: Component replacement procedures for wear items and major assemblies Specifications: Torque specifications, clearances, fluid capacities, alignment angles, diagnostic values Wiring Diagrams: Comprehensive electrical wiring schematics for all circuits Technical Depth Depth: Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls, advanced diagnostics, and body repair 📊 Manual Specifications File Format File Type: PDF (Portable Document Format) Searchable: Yes (typically) Printable: Yes Print Quality Quality Description: High-resolution digital scans for clarity and readability Binding Type Binding: N/A (Digital format) Paper Type Paper: N/A (Digital format) ⚙️ Engine Specifications Primary Engine 1 Engine Type: Inline 6-Cylinder (I6) Displacement: 4.0 Liters (242 cubic inches) Horsepower: Approximately 170-177 hp @ 4500-4700 rpm (specific to 1991 variations) Torque: Approximately 220-225 lb-ft @ 2400-3000 rpm (specific to 1991 variations) Bore X Stroke: 3.875 in x 3.560 in (98.4 mm x 90.4 mm) Compression Ratio: 8.8:1 Fuel Induction: Multi-port Electronic Fuel Injection (MPI) Block Material: Cast Iron Cylinder Head Material: Cast Iron Timing Drive: Roller timing chain Secondary Engine 1 Engine Type: Inline 4-Cylinder (I4) Displacement: 2.5 Liters (150 cubic inches) Horsepower: Approximately 125 hp @ 4800 rpm Torque: Approximately 145 lb-ft @ 2400 rpm Fuel Induction: Throttle Body Injection (TBI) or Multi-port Fuel Injection (MPI) depending on specific configuration Fuel System Fuel Type: Unleaded gasoline 🔧 Transmission Standard Transmission Type: 5-Speed Manual (AX-4 or AX-5) Optional Transmission 1 Type: 3-Speed Automatic (30RH) Optional Transmission 2 Type: 4-Speed Automatic (AW4) Features Transfer Case: Command-Trac (NV231) or Selec-Trac (NV242) part-time/full-time 4WD system Fluid Specifications Manual Transmission Fluid: API GL-5, SAE 75W-90 gear oil (check manual for exact spec) Automatic Transmission Fluid: ATF+3 or equivalent (check manual for exact spec) 📐 Dimensions Exterior Length Length: Approximately 170.5 inches (4331 mm) Exterior Width Width: Approximately 69.3 inches (1760 mm) Exterior Height Height: Approximately 63.8 inches (1620 mm) Wheelbase Wheelbase: 101.4 inches (2576 mm) Ground Clearance Ground Clearance: Varies by trim and options, typically around 8-10 inches Weights Curb Weight: Approximately 3200-3600 lbs (1451-1633 kg), depending on configuration Gross Vehicle Weight Rating: Approximately 4700-5000 lbs (2132-2268 kg) Cargo Cargo Volume: Approx. 69.9 cubic feet with rear seats folded 🛡️ Safety Features Ratings NHTSA Rating Driver Front Impact: Not extensively tested under modern protocols for this era; expected moderate performance. IIHS Rating Small Overlap Front: N/A (Test not performed on vehicles of this vintage) Active Features ABS: Optional Anti-lock Braking System (ABS) available on some models. Traction Control: Not typically available Passive Features Airbags: Driver's side airbag standard, passenger airbag not typically available. Seat Belts: Front and rear seat belts, shoulder belts for front occupants. Rollover Protection: Reinforced unibody structure and roll bar integrated into the roof structure. 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo radio with cassette player, optional CD player available on some trims. Speakers: Typically 4-6 speakers depending on trim level. Driver...