🏷️ Basic Information Identification Make: Jeep Model: Comanche Year: 1989 Codes Chassis Code: MJ 👋 Introduction Market Position Positioning: Compact pickup truck designed for utility and off-road capability, competing with models like the Toyota Hilux and Ford Ranger of its era. Competitive Analysis Competition: Offered a unique blend of Jeep's robust four-wheel-drive systems and truck utility, differentiating it from more car-like compact trucks. Key Features Features: Renowned Selec-Trac or Command-Trac 4x4 systems, durable construction, optional inline-six engines, and rugged styling. 📋 Manual Details Coverage Areas Coverage: Complete factory service and repair Page Count Pages: Hundreds Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: Downloadable PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, and overhaul procedures for all available engines. Transmission: Coverage for manual and automatic transmissions, including repair and adjustment. Drivetrain: Front and rear axle, transfer case, driveshafts, CV joints, and four-wheel drive system. Suspension: Front and rear suspension systems, including springs, shock absorbers, control arms, and bushings. Steering: Power steering system components, steering gear, tie rods, and alignment specifications. Brakes: Hydraulic brake system, front disc and rear drum brake assemblies, ABS (if equipped), and brake fluid specifications. Electrical: Complete wiring diagrams, component testing, charging system, starting system, ignition system, lighting, instrumentation, and accessories. Cooling: Radiator, fan, water pump, thermostat, and coolant specifications. Fuel: Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, and emissions control systems. Exhaust: Exhaust manifold, catalytic converter, mufflers, and pipes. Body: Body panels, doors, tailgate, interior trim, glass, and bumpers. HVAC: Heating, ventilation, and air conditioning system components and service. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, lubrication. Troubleshooting: Diagnostic charts and procedures for identifying and resolving common problems. Repair: Step-by-step instructions for component removal, installation, and repair. Diagnostics: Detailed diagnostic procedures for electrical and mechanical systems. Specifications: Torque specifications, clearances, fluid capacities, and pressure readings. Wiring Diagrams: Comprehensive electrical wiring schematics for all systems. Technical Depth Depth: Comprehensive, from basic adjustments to full engine and transmission rebuilds. 📊 Manual Specifications File Format Format: PDF Print Quality Quality: High-resolution, printable pages. Binding Type Binding: Digital download (printable). Paper Type Paper: N/A (Digital). ⚙️ Engine Specifications Primary Engine Engine 1: 2.5L AMC I4 (150 cu in) Engine 2: 4.0L AMC I6 (242 cu in) - High Output Performance Hp 2 5L I4: Approx. 105-115 hp Torque 2 5L I4: Approx. 130-145 lb-ft Hp 4 0L I6: Approx. 173-177 hp Torque 4 0L I6: Approx. 220-225 lb-ft Fuel System Fuel System Type: Multi-point Fuel Injection (MPI) or Throttle Body Injection (TBI) depending on engine and specific build. 🔧 Transmission Standard Standard Transmission: 4-speed Manual (e.g., AX-4) Optional Optional Transmission 1: 5-speed Manual (e.g., AX-5) Optional Transmission 2: 3-speed Automatic (e.g., AW-4) Optional Transmission 3: 4-speed Automatic (e.g., 42RE) Features Transfer Case: Selec-Trac (full-time 4WD with 2WD option) or Command-Trac (part-time 4WD) available. 📐 Dimensions Exterior Wheelbase Short: 113.0 inches Wheelbase Long: 125.0 inches Bed Length Short: 6 ft Bed Length Long: 7 ft Weights Curb Weight Range: Approx. 3,500 - 4,000 lbs Payload Capacity: Up to 1,500 lbs (depending on configuration) Towing Capacity: Up to 5,000 lbs (depending on configuration) 🛡️ Safety Features Ratings Crash Test Info: NHTSA ratings from the era are limited by modern standards. Focus on mechanical safety features. Active Features ABS: Optional Anti-lock Braking System (ABS) available on rear wheels. Passive Features Seatbelts: Seat belts for all occupants. Structure: Body-on-frame construction provides inherent structural integrity. 💡 Technology Features Infotainment Infotainment System: Basic AM/FM radio with cassette player. Optional premium sound systems may have been available. Driver Assistance Driver Assistance Features: Limited to basic safety features of the era; no electronic driver-assistance systems. Connectivity Connectivity Features: No modern connectivity features (Bluetooth, USB, etc.). 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 to 5,000 miles, or 6 months, depending on driving conditions and oil type. Transmission Fluid Change: Refer to manual for specific intervals (e.g., every 30,000-60,000 miles for automatic transmissions). Coolant Flush: Typically every 30,000-60,000 miles or 2-4 years. Fluid Specifications Engine Oil Spec: API Service SG or SH, SAE 10W-30 or 10W-40 (check manual for exact spec). Automatic Transmission Fluid: ATF+3 or ATF+4 (refer to specific transmission type in manual). Coolant Spec: Mopar Antifreeze/Coolant (green) or equivalent ethylene glycol-based coolant. Brake Fluid Spec: DOT 3 Hydraulic Brake Fluid. Known Issues Common Issues: Rusty rocker panels, door sills, floor pans; aging electrical components; potential for head gasket issues on early 4.0L engines; worn U-joints; cooling system leaks. 📚 Vehicle History Brand Heritage Jeep Legacy: Built on Jeep's long-standing reputation for off-road prowess and durability. Model Evolution Mj Introduction: Introduced in 1985 as Jeep's entry into the compact pickup truck market, sharing its platform with the Cherokee XJ. Mj Facelift: Received minor updates throughout its production run, with the 1989 model year featuring some styling...