🏷️ Basic Information Identification Make: Jeep Model: Comanche Model Code: MJ Production Years Covered: 1984-1996 Codes Chassis Code: MJ 👋 Introduction Market Position Vehicle Segment: Compact Pickup Truck Jeep Heritage: Leveraged Jeep's reputation for ruggedness and off-road capability in a utility segment Competitive Analysis Key Competitors: Toyota Pickup, Nissan Hardbody, Ford Ranger, Chevrolet S-10 Key Features Unique Selling Proposition: Unibody construction (shared with Cherokee XJ) for lighter weight and improved ride compared to body-on-frame competitors, available 4x4 system. Design Philosophy: Practical, durable, and capable, mirroring the core Jeep brand values. 📋 Manual Details Coverage Areas Manual Type: Factory Service Manual / Workshop Manual Language: English Format: Digital (likely PDF) Intended Audience: Professional Technicians and Enthusiast Owners Page Count: Extensive (typical WSM for this era exceeds 1000 pages, specific count not provided in product info) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, fuel system, ignition system, cooling system, exhaust system, lubrication system, engine control systems (ECU diagnostics) Transmission: Manual and Automatic Transmission repair, overhaul, diagnostics, clutch, driveshafts, transfer case Chassis: Suspension (front and rear), steering system, brakes (hydraulic, power assist, parking brake), wheels and tires Electrical: Wiring diagrams, lighting systems, starting and charging systems, instrumentation, power accessories, body electrical components, diagnostic procedures for electrical faults Body: Body structure, exterior panels, interior trim, glass, doors, hoods, tailgates, collision repair information Procedures Included Maintenance: Scheduled maintenance intervals, fluid changes, filter replacements, lubrication points, inspections Repair: Detailed step-by-step repair procedures for all major components and systems, including disassembly, assembly, and adjustment Troubleshooting: Diagnostic charts, symptom-based troubleshooting guides, fault code interpretation (where applicable) Specifications: Torque values, clearances, fluid capacities, electrical resistance values, pressure specifications Technical Depth Diagnostic Capabilities: Advanced diagnostic procedures, including methods for identifying and resolving complex mechanical and electrical issues Rebuild Procedures: Comprehensive overhaul instructions for engines, transmissions, differentials, and other major mechanical assemblies Wiring Diagrams: Detailed and accurate wiring diagrams for all electrical systems, essential for diagnosis and repair 📊 Manual Specifications File Format Compatibility: Viewable on most devices with PDF reader (Adobe Acrobat Reader recommended) Searchability: Likely text-searchable for quick information retrieval Printability: Printable pages for hands-on workshop use Print Quality Clarity: High-resolution, clear text and diagrams Binding Type Type: N/A (Digital Format) Paper Type Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: 4.0L Inline-6 (High Output) Displacement: 3960 cc (242 cubic inches) Horsepower Output: Approx. 170-182 hp (depending on year and specific tune) Torque Output: Approx. 220-235 lb-ft (depending on year and specific tune) Optional Engine Engine Code: 2.5L Inline-4 (AMC 150) Displacement: 2469 cc (150 cubic inches) Horsepower Output: Approx. 105-120 hp Torque Output: Approx. 135-140 lb-ft Performance Fuel Type: Unleaded Gasoline Fuel System Induction Type: Multi-Port Fuel Injection (MPI) for 4.0L, Throttle Body Injection (TBI) for early 2.5L, later 2.5L also MPI. 🔧 Transmission Standard Transmission Type: 5-Speed Manual (e.g., AX-5) Optional Transmission Type: 3-Speed Automatic (e.g., Aisin AW4) Type Later Years: 4-Speed Automatic (e.g., AW4 or 42RH/44RE for later models) Features Transfer Case Options: Command-Trac (2WD/4WD Part-Time), Selec-Trac (2WD/4WD Full-Time and Part-Time) - NP231, NP242 📐 Dimensions Exterior Wheelbase Short: 113.0 inches (2870 mm) Wheelbase Long: 121.0 inches (3073 mm) Bed Lengths: 6-foot and 7-foot bed options Weights Curb Weight: Approx. 3,500 - 4,000 lbs (depending on configuration) 🛡️ Safety Features Ratings NHTSA Ratings: N/A (Vehicle Safety Administration ratings were less standardized during this period for trucks) Active Features ABS: Available on some later models, primarily rear-wheel ABS Passive Features Airbags: Driver airbag became standard in later years, passenger airbags were not common. Seatbelts: Lap and shoulder belts 💡 Technology Features Infotainment Radio Options: AM/FM radio with cassette player, optional premium sound systems Driver Assistance Cruise Control: Available as an option on most trims Connectivity Early Tech: Focus on functional utility rather than advanced technology; basic driver controls and comfort features. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 3,000 miles or 3 months for conventional oil, potentially longer with synthetic. Consult manual for specifics. Transmission Fluid Interval: Every 30,000-50,000 miles, depending on usage and transmission type. Consult manual. Spark Plug Replacement: Varies by plug type, typically 30,000-100,000 miles. Consult manual for specific recommendations. Fluid Specifications Engine Oil: SAE 10W-30 or 10W-40 (consult manual for specific 4.0L/2.5L recommendations and API service classification) Transmission Fluid Auto: ATF+3 or ATF+4 (for later models), consult manual for specific AW4/42RH/44RE requirements Transmission Fluid Manual: GL-3 or GL-4 gear oil (e.g., SAE 75W-90 or 80W-90), check manual for AX-5 specification Coolant: 50/50 mix of Mopar Antifreeze/Coolant (MS-9769) or equivalent ethylene glycol-based coolant with demineralized water Brake Fluid: DOT 3 brake fluid Known Issues Common Concerns Engine: Oil filter adapter O-rings leakage (4.0L), rear main seal leaks, intake manifold gasket leaks (especially 4.0L '99+ style, but can occur earlier). Common Concerns Transmission: AX-5 manual transmission synchro wear, AW4 automatic transmission solenoid issues, transfer case chain stretch (NP231). Common...