🏷️ Basic Information Identification Make: Jeep Model: Comanche Year: 1988 Codes Chassis Code: XJ Generation Generation: First Generation (SJ XJ Platform) 👋 Introduction Market Position Target Audience: DIY mechanics, Jeep enthusiasts, professional automotive technicians. Competitive Analysis Value Proposition: Provides dealership-level repair information at a fraction of the cost of dealer labor, enabling significant cost savings on maintenance and repairs. Key Features Content Highlight: Actual factory service manual content, not a compilation. Includes detailed procedures, diagrams, photos, and specifications for extensive repair and maintenance tasks. Data Accessibility: Digital format allows for easy searching, printing of specific pages, and multiple backups. 📋 Manual Details Coverage Areas Covered Models: Jeep Cherokee (XJ), Jeep Comanche (MJ), Jeep Wagoneer (XJ based), Jeep Wrangler (YJ) Page Count Total Pages: 1380+ (including AW4 Automatic Transmission Manual) Manual Type Type: Factory Service Repair Manual Language Language: English Format Format: .PDF (Digital Download) 📖 Manual Coverage Systems Covered Powertrain: Engine (2.5L, 4.0L), Fuel System, Cooling System, Exhaust System, Transmission (Manual and Automatic AW4), Transfer Case, Differential and Driveline Chassis And Suspension: Suspension, Steering, Brakes, Frame and Bumpers, Tires and Wheels Electrical And Accessories: Battery, Starting Systems, Charging System, Ignition System, Instrument Panel Systems, Audio Systems, Horn Systems, Vehicle Speed Control System, Turn Signal and Hazard Warning Systems, Wipers and Washer Systems, Lamps, Passive Restraint Systems, Electrically Heated Systems, Power Lock Systems, Power Window Systems, Power Mirror Systems, Chime/Buzzer Warning Systems, Overhead Console Systems, Wiring Diagrams Body And Comfort: Body, Heating and Air Conditioning, Emission Control System Procedures Included Maintenance: Lubrication and Maintenance Schedules, Fluid Level Checks, Filter Replacements, Tune-Ups Diagnostics And Repair: Component Testing, Troubleshooting Guides, Step-by-Step Repair Procedures for all covered systems Technical Data: Specifications, Torque Values, Clearances, Wiring Schematics, Exploded Views, Diagrams, Photos Technical Depth Depth: Comprehensive: Covers basic maintenance to advanced diagnostics and complete repairs. 📊 Manual Specifications File Format File Type: .PDF Print Quality Printability: Printable on demand, allowing users to print specific sections as needed. Binding Type Binding: N/A (Digital Download) Paper Type Paper Quality: N/A (Digital Download) Software Requirements Reader: Adobe Acrobat Reader X or later (Free download available) ⚙️ Engine Specifications Primary Engine Engine Option 1: 2.5L AMC I4 (150 ci) Engine Option 2: 4.0L AMC I6 (242 ci) Performance 2 5L Horsepower 2 5L: Approx. 121 hp @ 4800 rpm Torque 2 5L: Approx. 174 lb-ft @ 2400 rpm Performance 4 0L Horsepower 4 0L: Approx. 177 hp @ 4700 rpm Torque 4 0L: Approx. 220 lb-ft @ 3200 rpm Fuel System Fuel Delivery Type: Multi-point Fuel Injection (MPI) Recommended Fuel: Unleaded gasoline (87 octane or higher recommended) 🔧 Transmission Standard Transmission Standard AWD Manual: Getrag 5-speed manual (NV2500 variants) Optional Transmission Optional AWD Automatic: AW4 4-speed automatic transmission (Included as a separate manual) Features Transfer Case Options: Command-Trac (NV242) or Selec-Trac (NV242) full-time 4WD systems 📐 Dimensions Exterior Comanche Shortbed Wheelbase Shortbed: 113.9 inches Exterior Comanche Longbed Wheelbase Longbed: 125.9 inches Exterior Comanche Length Shortbed: 179.1 inches Width: 72.5 inches Height: 66.5 inches Weights Curb Weight Range: Approx. 3400 - 3800 lbs (Varies by configuration) Gvwr Range: Approx. 4800 - 5600 lbs (Varies by configuration) 🛡️ Safety Features Ratings NHTSA Ratings 1988: N/A (NHTSA did not publish standardized ratings in this format for 1988 vehicles) Active Features Braking System: Front disc, rear drum brakes. Optional rear disc brakes on some models. Passive Features Seat Belts: Front 3-point automatic locking retractors and rear lap belts. Rollover Protection: Integral roll bar structure within the XJ chassis. 💡 Technology Features Infotainment Audio System: Factory AM/FM radio with cassette player, optional premium sound systems. Driver Assistance Cruise Control: Optional Vehicle Speed Control (Cruise Control) system. Connectivity OBD Type: OBD-I (On-Board Diagnostics, pre-CAN bus era) with proprietary diagnostic connectors. Manual details diagnostic procedures. 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000 miles or 3 months, whichever comes first (typical for the era). Transmission Fluid Change: Check level regularly; change fluid and filter every 30,000 miles (for AW4) or as per manual recommendations for manual transmissions. Fluid Specifications Engine Oil Spec: API SG or higher, SAE 10W-30 recommended (check manual for ambient temperature suitability). Coolant Type: Ethylene glycol-based antifreeze/coolant (typically a green formula for this era). Transfer Case Fluid: ATF+3 or equivalent for NV242 Selec-Trac (check manual for specifics). Differential Fluid: SAE 80W-90 hypoid gear oil for front and rear differentials. Known Issues Common Wear Items: Water pump leaks, radiator issues, rear main seal leaks, worn leaf springs, aging suspension bushings, rust (especially in body panels and frame rails). Electrical Quirks: Aging wiring harness components, failing sensors (e.g., CPS, MAP sensor), dashboard instrument cluster issues. Engine 2 5L: Known for being underpowered but durable. Potential issues with exhaust manifolds cracking. Engine 4 0L: Generally robust. Potential for cracked cylinder heads on earlier models (though less common by '88) and oil filter adapter housing leaks. 📚...