🏷️ Basic Information Identification Make: Jeep Model: Comanche Body Style: Pickup Truck Market Segment: Compact/Mid-size Pickup Truck Product Type: Service Repair Manual Codes Chassis Code: XJ (shared with Cherokee) 👋 Introduction Market Position Positioning: The Jeep Comanche (MJ) was a compact pickup truck produced by Jeep from 1986 to 1992, sharing its unibody platform with the popular Cherokee (XJ). It aimed to compete in the growing compact pickup market, offering Jeep's renowned off-road capability in a utilitarian package. Competitive Analysis Competitors: Primary competitors included the Ford Ranger, Chevrolet S-10, GMC S-15 Sonoma, and Nissan Hardbody. The Comanche differentiated itself with its unibody construction, robust drivetrain options, and strong off-road heritage. Key Features Unique Selling Points: Unibody construction (lighter and stiffer than body-on-frame), available 4.0L inline-six engine, legendary Jeep 4x4 capability, relatively compact size for maneuverability. Manual Value Proposition Value For Owners: This comprehensive service manual is essential for owners looking to maintain, diagnose, and repair their Jeep Comanche. It provides the same detailed information found in dealership service bays, empowering DIY enthusiasts and professional mechanics alike. 📋 Manual Details Coverage Areas Model Years Covered: 1986, 1987, 1988, 1989, 1990, 1991, 1992 Geographic Coverage: Primarily North American specifications, with global applicability for core mechanicals. Page Count Estimated Page Count: Over 1500 pages (typical for comprehensive service manuals of this era) Manual Type Type: Factory Service Manual (FSM) / Workshop Manual Content Focus: Repair, Maintenance, Diagnostics, Specifications Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine Mechanical: Diagnosis, repair, overhaul, specifications for 2.5L I4, 4.0L I6, and 4.2L I6 engines. Engine Performance: Fuel injection systems (Renix EFI), ignition systems, emission controls, cooling system. Transmission: Manual transmissions (AX-4, AX-5, NV2500), Automatic transmissions (AW-4, Aisin-Warner). Drivetrain: Transfer case (NP231, NP242), Dana 30 front axle, Dana 35 rear axle, NP242 Command-Trac, 4WD system. Suspension: Front and rear suspension systems, leaf springs, coil springs, shock absorbers, sway bars. Steering: Power steering system, steering column, steering linkage, steering gear. Brakes: Front disc brakes, rear drum brakes, ABS (if equipped), hydraulic system, parking brake. Electrical: Battery, starting system, charging system, lighting system, wiring diagrams for all circuits. Body And Interior: Body panels, doors, windows, seats, HVAC system, interior trim, body repair procedures. HVAC: Air conditioning system, heater core, blower motor, controls, refrigerant. Exhaust System: Exhaust manifold, catalytic converter, muffler, pipes. Fuel System: Fuel tank, fuel pump, fuel lines, fuel injectors, fuel pressure regulator. Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks, tune-ups. Troubleshooting: Diagnostic flowcharts, symptom analysis, common problems and solutions. Repair: Step-by-step repair instructions for all major components and systems. Overhaul: Complete engine and transmission rebuild procedures. Diagnostics: On-board diagnostics (OBD-I) interpretation, sensor testing, actuator testing. Wiring Diagrams: Detailed electrical schematics for all vehicle circuits. Technical Depth Depth: Comprehensive, covering everything from basic fluid checks to full engine and transmission overhauls. Diagnostics Level: Advanced diagnostic procedures including component testing and troubleshooting. Illustration Quality: Illustrated with clear, step-by-step diagrams and photos (as per description). 📊 Manual Specifications File Format Format Type: PDF (Portable Document Format) Searchability: Likely text-searchable if OCR'd properly, enhancing ease of use. Print Quality Print Readability: Designed for clear printing, allowing users to take it into the garage. Binding Type Original Binding: Stapled or perfect bound (factory original); Digital format offers no physical binding. Paper Type Original Paper: Typically printed on durable, shop-resistant paper (factory original). ⚙️ Engine Specifications Primary Engine Engine 1 Variant: 2.5L AMC I4 (150 cu in) Engine 1 Fuel System: Renix Multi-Port Fuel Injection (MPI) Engine 1 Power Hp: Approx. 115 hp @ 4600 RPM Engine 1 Torque Lb Ft: Approx. 135 lb-ft @ 2400 RPM Optional Engine 1 Engine 2 Variant: 4.0L AMC I6 (242 cu in) 'High Output' Engine 2 Fuel System: Renix Multi-Port Fuel Injection (MPI) Engine 2 Power Hp: Approx. 173 hp @ 4700 RPM (later models 190+ hp) Engine 2 Torque Lb Ft: Approx. 220 lb-ft @ 3200 RPM (later models 225+ lb-ft) Optional Engine 2 Engine 3 Variant: 4.2L AMC I6 (258 cu in) Engine 3 Fuel System: Fuel Injection (early models) or Carbureted (late models) Engine 3 Power Hp: Approx. 116 hp @ 3200 RPM Engine 3 Torque Lb Ft: Approx. 210 lb-ft @ 2000 RPM Fuel System Injection Type: Renix (Renault Electronics/Engine Management) EFI system, later models adopted Chrysler EFI. Fuel Type: Unleaded gasoline 🔧 Transmission Standard Transmission 1: AX-4 4-speed manual (early models, 2.5L) Optional Transmission 2: AX-5 5-speed manual (common, especially with 4.0L) Transmission 3: NV2500 5-speed manual (heavy-duty, less common) Transmission 4: AW-4 (Aisin-Warner) 4-speed automatic (very popular, especially with 4.0L) Features 4Wd System: Selec-Trac (Command-Trac NP231 or NP242 transfer case) Fluid Specifications Automatic Transmission Fluid: ATF+3 or equivalent (check specific model year for precise spec, e.g., Dexron II/III) Manual Transmission Fluid: GL-3 or GL-4 gear oil, 75W-90 or 80W-90 (check manual...