🏷️ Basic Information Identification Make: Jeep Model: Cherokee Year: 1990 Codes Chassis Code: XJ 👋 Introduction Market Position Vehicle Segment: Compact SUV (Sport Utility Vehicle) Target Audience: Off-road enthusiasts, adventurers, and families seeking a capable and rugged vehicle. Competitive Analysis Key Competitors: Toyota 4Runner, Ford Bronco II, Chevrolet S-10 Blazer. Key Features Chassis Design: Unibody construction (a significant differentiator for SUVs at the time), offering better on-road manners than body-on-frame rivals. 4X4 System: Renowned Jeep Command-Trac 4WD system, known for its robust and reliable performance. Durability: Known for its rugged build quality and off-road capability, cementing Jeep's reputation. 📋 Manual Details Coverage Areas All Major Topics: true Page Count Estimated Page Count: Approximately 1500-2000 pages (typical for comprehensive service manuals of this era) Manual Type Manual Type: Service and Repair Workshop Manual Language Language: English Format Format: Digital (likely PDF, often scanned from original print) 📖 Manual Coverage Systems Covered Engine Mechanical: Detailed diagnosis, repair, overhaul procedures for all engine variants. Engine Electrical: Ignition system, fuel injection, sensor testing, wiring diagrams, ECU diagnostics. Transmission Manual: Service, repair, and overhaul for manual transmissions (e.g., AX-4, AX-15). Transmission Automatic: Service, repair, and overhaul for automatic transmissions (e.g., AW4). Drivetrain 4X4: Operation, diagnosis, and repair of the Command-Trac 4WD system, transfer case service. Suspension: Front and rear suspension components, alignment specifications, component replacement. Steering: Power steering system diagnosis, pump and linkage service, steering column repair. Brakes: Hydraulic system, disc and drum brake service, ABS diagnostics (if equipped), parking brake. Cooling System: Radiator, fan, water pump, thermostat, and coolant maintenance and repair. Fuel System: Fuel pump, injectors, fuel lines, fuel tank service, evaporative emissions control. Exhaust System: Catalytic converter, mufflers, pipes, and manifold service. Electrical System: Battery, charging system, lighting, accessories, power distribution. Body And Interior: Door mechanisms, glass, trim, seats, dashboard, and body panel repair. HVAC System: Air conditioning, heating, ventilation system service and repair. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, tune-ups. Troubleshooting Guides: Systematic diagnostic procedures for common and uncommon faults. Engine Rebuilds: Detailed step-by-step instructions for complete engine overhauls. Transmission Overhauls: Comprehensive disassembly, inspection, and reassembly of transmission units. Component Replacement: Instructions for replacing major and minor components. Electrical Diagnostics: Using test equipment, interpreting wiring diagrams for fault finding. Body Repair: Panel replacement, dent repair, rust prevention. Torque Specifications: All critical fastener torque values for assembly and disassembly. Special Tool Identification: Identification and usage instructions for specialized Jeep service tools. Technical Depth Depth Level: Comprehensive (from basic maintenance to complete engine/transmission rebuilds). Diagnostic Focus: In-depth diagnostic procedures for all major systems, including engine control and electrical faults. Rebuild Instructions: Detailed instructions for rebuilding major mechanical assemblies like engines and transmissions. Wiring Diagrams: Complete and detailed electrical schematic diagrams for all vehicle systems. 📊 Manual Specifications File Format File Type: PDF Searchability: Typically searchable text content for efficient information retrieval. Print Quality Print Readability: High resolution scans, ensuring clear text and diagrams. Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code 1: 4.0L Inline-6 "Renegade" (AMC 242) Displacement 1: 3960 cc (242 cubic inches) Horsepower 1: 177 hp @ 4750 rpm Torque 1: 220 lb-ft @ 3250 rpm Bore X Stroke 1: 3.875" x 3.562" (98.4 mm x 90.5 mm) Compression Ratio 1: 8.8:1 Valvetrain 1: Overhead Valve (OHV), 2 valves per cylinder Fuel System 1: Multi-Point Fuel Injection (MPFI) Cooling System Capacity 1: 11.2 quarts (10.6 L) Optional Engine Engine Code 2: 2.5L Inline-4 "Tech" (AMC "Hemi" - though not a true Hemi) Displacement 2: 2469 cc (150.5 cubic inches) Horsepower 2: 121 hp @ 4700 rpm Torque 2: 170 lb-ft @ 2400 rpm Fuel System 2: Multi-Point Fuel Injection (MPFI) Performance Engine Recommendation: The 4.0L Inline-6 is widely considered the superior and most sought-after engine for its power and reliability. 🔧 Transmission Standard Standard Transmission: AX-4 4-Speed Manual Transmission (Rarely equipped, primarily on base models) Optional Optional Transmission 1: AX-15 5-Speed Manual Transmission (Commonly paired with 4.0L) Optional Transmission 2: AW4 4-Speed Automatic Transmission (Commonly paired with both engines, built by Aisin-Warner) Features Transfer Case Type: NP231 Command-Trac (2-speed, part-time 4WD system) Automatic Transmission Control: Electronically controlled for shift points. 📐 Dimensions Exterior Length: 172.5 inches (4382 mm) Width: 70.5 inches (1791 mm) Height: 64.4 inches (1636 mm) Wheelbase: 101.4 inches (2576 mm) Ground Clearance: Approx. 8.7 inches (221 mm) depending on tires and suspension Weights Curb Weight 4Cyl 2Wd: Approx. 3200 lbs (1451 kg) Curb Weight 6Cyl 4Wd: Approx. 3500-3700 lbs (1588-1678 kg) Towing Capacity: Up to 5,000 lbs (2,268 kg) with proper equipment and engine. 🛡️ Safety Features Ratings NHTSA Rollover Resistance: NHTSA 4-star rating for rollover resistance (typical for SUVs of this era). Active Features ABS: Available Anti-lock Braking System (ABS) on rear wheels, or optional 4-wheel ABS. Passive Features Seat Belts:...