🏷️ Basic Information Identification Make: Jeep Model: Cherokee (XJ) Year: 1990 Codes Chassis Code: XJ 👋 Introduction Market Position Segment: Compact SUV Target Audience: DIY enthusiasts, mechanics, Jeep owners seeking in-depth repair knowledge Competitive Analysis Competitors 1990: Ford Explorer, Chevrolet S-10 Blazer, Toyota 4Runner, Nissan Pathfinder Key Features Vehicle Philosophy: Robust construction, capable off-road performance, relatively simple mechanicals Manual Value Proposition: Empowers owners to perform complex repairs and maintenance, saving money and ensuring quality 📋 Manual Details Coverage Areas Engine Options: 2.5L AMC 150 I4, 4.0L AMC 242 I6 Transmission Options: AX4/AX4R Automatic, AX5 Manual, NV3550 Manual (late 1990 production) Drivetrain Options: 2WD, 4WD (Command-Trac, Selec-Trac) Body Styles: 2-door SUV, 4-door SUV Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Manual / Repair Manual Language Language: English Format Format: Downloadable Digital File (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine (2.5L, 4.0L), Fuel System, Cooling System, Exhaust System, Ignition System, Engine Mechanical, Engine Electrical Transmission Drivetrain: Automatic Transmission (AX4/AX4R), Manual Transmission (AX5, NV3550), Transfer Case (Command-Trac, Selec-Trac), Drive Axles (Front & Rear) Chassis Suspension Steering: Front Suspension (Leaf Spring/Solid Axle), Rear Suspension (Leaf Spring/Solid Axle), Steering System, Brakes (Front Disc, Rear Drum), Wheels, Tires Electrical HVAC: Body Electrical Systems, Lighting, Instruments & Gauges, HVAC (Heating, Ventilation, Air Conditioning), Power Accessories, Fuses & Relays Body Interior: Body Panels, Doors, Windows, Seats, Interior Trim, Bumpers Procedures Included Maintenance: Fluid Changes (Oil, Coolant, Brake, Transmission), Filter Replacements, Lubrication, Tune-ups, Belt & Hose Inspection/Replacement Repair Rebuild: Engine Overhaul, Transmission Rebuild, Differential Service, Suspension Component Replacement, Brake System Overhaul, Electrical Component Diagnosis & Repair Diagnostics Troubleshooting: Wiring Diagrams, Diagnostic Trouble Codes (DTCs) for applicable systems, Symptom-based troubleshooting charts, Component testing procedures Specifications Tolerances: Torque Specifications, Clearances, Fluid Capacities, Electrical Specifications, Component Dimensions Technical Depth Depth: Comprehensive - Covers routine maintenance, troubleshooting, repair, and overhaul procedures for all major vehicle systems. 📊 Manual Specifications File Format Digital Format: PDF (Portable Document Format) Searchability: Text-searchable (OCR) Print Quality Digital Quality: High-resolution scans with clear diagrams and text Binding Type Digital Access: Instant download for immediate access Paper Type Digital Delivery: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine 1 Displacement: 2.5 Liters (150 cu in) Engine 1 Configuration: Inline 4-Cylinder (I4) Engine 1 Code: AMC 150 Engine 1 Horsepower: 125 hp @ 4,000 rpm (approx.) Engine 1 Torque: 200 lb-ft @ 2,000 rpm (approx.) Optional Engine Engine 2 Displacement: 4.0 Liters (242 cu in) Engine 2 Configuration: Inline 6-Cylinder (I6) Engine 2 Code: AMC 242 Engine 2 Horsepower: 177 hp @ 4,750 rpm (approx.) Engine 2 Torque: 220 lb-ft @ 3,250 rpm (approx.) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline Performance Compression Ratio 2.5L: 8.8:1 Compression Ratio 4.0L: 8.8:1 🔧 Transmission Standard Manual Transmission: AX5 5-Speed Manual Optional Automatic Transmission: AX4/AX4R 4-Speed Automatic Late Manual Transmission: NV3550 5-Speed Manual (rare for '90) Features Transfer Case Options: New Process NV231 Command-Trac (Part-time 2WD, 4WD High, 4WD Low), New Process NV242 Selec-Trac (Full-time 4WD, Part-time 4WD High, 4WD Low) Fluid Specifications Automatic Transmission Fluid: Chrysler ATF+3 or equivalent (check specific manual for exact spec) Manual Transmission Fluid: API GL-5, SAE 75W-90 Gear Oil (check specific manual) 📐 Dimensions Exterior Wheelbase: 101.4 inches Length: 167.5 inches Width: 69.2 inches Height: 62.5 inches Weights Curb Weight Approx: 3,200 - 3,500 lbs Gross Vehicle Weight Rating Approx: 4,400 - 4,800 lbs Cargo Cargo Volume Behind Rear Seat: 30.5 cu ft Cargo Volume With Rear Seat Folded: 69.2 cu ft 🛡️ Safety Features Ratings NHTSA Rollover Resistance: Not rated (as per typical 1990 standards) Active Features ABS: Optional (Rear-wheel ABS) Passive Features Airbags: Driver-side airbag only Seat Belts: Front: 3-point; Rear: Lap/shoulder belts 💡 Technology Features Infotainment Audio System: AM/FM Radio, Optional Cassette Player, Optional CD Player (rare) Speakers: Typically 4 or 6 speakers Driver Assistance Cruise Control: Optional Connectivity Connectivity Features: N/A (pre-digital era) 🔧 Maintenance Service Intervals Engine Oil Change: Every 3,000-5,000 miles or 6 months (depending on driving conditions and oil type) Engine Coolant Change: Every 30,000 miles or 2 years Transmission Fluid Change Auto: Every 30,000-50,000 miles Transmission Fluid Change Manual: Every 50,000-75,000 miles Transfer Case Fluid Change: Every 30,000-50,000 miles Fluid Specifications Engine Oil 2.5L: API SG/SH, SAE 10W-30 (or 10W-40 in cooler climates) Engine Oil 4.0L: API SG/SH, SAE 10W-30 (or 10W-40 in cooler climates) Coolant: Chrysler Type A (Green) or equivalent Ethylene Glycol based coolant Brake Fluid: DOT 3 Known Issues Engine 4.0L Common Issue: Head gasket leaks, oil filter adapter housing leaks, cracked cylinder heads (less common in '90). Suspension Common Issue: Leaf spring sag, worn control arm bushings (due to solid axle design). Electrical Common Issue: Grounding issues, intermittent power to accessories. Rust Prone Areas: Rocker panels, rear quarter panels, floor pans, unibody frame rails. 📚 Vehicle History Brand Heritage Jeep Legacy: Established in WWII with...