🏷️ Basic Information Identification Make: Jeep Model: Cherokee Year: 1991 Chassis Code: XJ Codes Platform: AMC "Compact SUV" Platform 👋 Introduction Market Position Segment: Compact SUV Target Audience: Jeep Cherokee owners, independent repair shops, automotive technicians. Competitive Analysis Competitors 1991: Ford Explorer, Chevrolet S-10 Blazer, Toyota 4Runner, Nissan Pathfinder. Key Features Vehicle Platform Significance: Unibody construction pioneered in the compact SUV segment, offering a car-like ride with SUV capability. Key Features Manual Value Proposition: Provides professional-level repair and maintenance guidance, enabling accurate diagnostics and repairs, reducing reliance on dealerships, and extending vehicle lifespan. 📋 Manual Details Coverage Areas Engines Covered: 4.0L Inline-6 (242 ci) OHV, 2.5L Inline-4 (150 ci) OHV Transmissions Covered: 4-speed Automatic (AW4), 5-speed Manual (AX-5, AX-15) Drivetrains Covered: 2WD (RWD), 4WD (Command-Trac, Selec-Trac) Page Count Estimated Pages: Approximately 1000-1500+ Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, cooling system, lubrication system, exhaust system, manual transmission, automatic transmission, transfer case, drivetrain components (axles, driveshafts, differentials) Chassis: Suspension (front and rear), steering system, braking system (front disc/rear drum, ABS availability) Electrical: Battery, charging system, starting system, lighting system, instrument cluster, ignition switch, power accessories, wiring diagrams, fuse and relay information Body: Body panel removal and installation, interior trim, doors, windows, tailgate, glass, seals, body hardware Procedures Included Maintenance: Routine maintenance checks, fluid level checks and changes, filter replacements, lubrication points, belt adjustments, spark plug replacement Repair: Engine tune-up, cylinder head removal/installation, piston and connecting rod service, crankshaft service, valve train overhaul, fuel injector testing/replacement, water pump replacement, radiator service, starter motor repair, alternator testing/replacement, clutch service, transmission overhaul, brake pad/shoe replacement, suspension component replacement, steering component repair, body panel repair Troubleshooting: Diagnostic procedures for engine performance issues, electrical faults, transmission problems, braking system anomalies, starting and charging system failures Technical Depth Depth: Comprehensive - from basic scheduled maintenance and fluid specifications to complete engine and transmission rebuild procedures, including detailed torque specifications, diagnostic flowcharts, and component testing methods. 📊 Manual Specifications File Format Digital Format: Searchable PDF with clickable table of contents and hyperlinked sections for efficient navigation. Print Quality Print Resolution: High-resolution scans ensuring clarity of text, diagrams, and illustrations. Binding Type Physical Binding: N/A (Digital Format) Paper Type Physical Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine 1 Name: 4.0L Inline-6 OHV (242 ci) Engine 1 Displacement: 3960 cc Engine 1 Bore X Stroke: 98.5 mm x 86.6 mm Engine 1 Compression Ratio: 8.8:1 Engine 1 Horsepower: 177 hp @ 4700 rpm Engine 1 Torque: 220 lb-ft @ 3200 rpm Secondary Engine Engine 2 Name: 2.5L Inline-4 OHV (150 ci) Engine 2 Displacement: 2469 cc Engine 2 Bore X Stroke: 97.5 mm x 82.7 mm Engine 2 Compression Ratio: 8.8:1 Engine 2 Horsepower: 125 hp @ 4600 rpm Engine 2 Torque: 150 lb-ft @ 2400 rpm Fuel System Fuel Delivery: Multi-Point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission 1 Type: 4-speed Automatic (Selectable 2WD/4WD) Transmission 1 Model: Chrysler 42RE (late 1991 production), potentially AW4 depending on origin Optional Transmission 2 Type: 5-speed Manual Transmission 2 Model: AX-5, AX-15 Features Transfer Case: Command-Trac (NV231) or Selec-Trac (NV242) part-time/full-time 4WD systems 📐 Dimensions Exterior Wheelbase: 101.4 inches (2576 mm) Length: 165.0 inches (4191 mm) Width: 69.3 inches (1760 mm) Height: 62.3 inches (1582 mm) Weights Curb Weight Approx: 3100-3500 lbs (1406-1588 kg), depending on configuration. Towing Capacity Max Approx: 5000 lbs (2268 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3 out of 5 stars (typical for SUVs of this era) Active Features ABS Availability: Optional on some models Passive Features Seat Belts: Front and rear seat belts Airbags: Driver-side airbag standard for 1991 model year. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player. Optional premium sound system available. Navigation: Not available on this model year. Driver Assistance Cruise Control: Optional Connectivity Power Windows Locks: Optional on higher trim levels 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, whichever comes first. Tune Up Interval: Spark plugs every 30,000 miles (48,000 km), air filter every 15,000-30,000 miles (24,000-48,000 km). Transmission Fluid Change: Every 30,000-60,000 miles (48,000-96,000 km) for automatic transmissions, depending on usage. Fluid Specifications Engine Oil Type: API SF/SG, SAE 10W-30 recommended for 4.0L; SAE 10W-30 or 10W-40 for 2.5L. Coolant Type: Ethylene glycol based, 50/50 mix with distilled water. Mopar Antifreeze/Coolant (MS-9769). Automatic Transmission Fluid: ATF+3 or ATF+4 (or equivalent Dexron II/III for AW4). Manual Transmission Fluid: GL-3 or GL-4 gear oil, SAE 75W-90 or 80W-90. Transfer Case Fluid: ATF+3 or ATF+4 (for NV242 Selec-Trac); NV231 Command-Trac typically uses Dexron II/III or ATF+3. Differential Fluid: API GL-5, SAE 75W-90 or 80W-90. Limited-slip additive may be required for some differentials. Known Issues...