🏷️ Basic Information Identification Make: Dodge Model: Ram Pickup Truck Years: 1989, 1990, 1991 👋 Introduction Market Position Segment: Full-size pickup truck. Target Audience: Commercial users, fleet owners, heavy-duty users, enthusiasts seeking robust work vehicles. Competitive Analysis Competitors: Ford F-Series, Chevrolet C/K Series. Key Features Powertrain Options: Renowned for powerful Magnum V8 engines and the robust Cummins turbodiesel. Durability: Built for heavy-duty use and towing capacity, known for its rugged construction. Manual Value: Essential resource for maintaining and repairing these durable trucks, ensuring longevity and optimal performance. 📋 Manual Details Coverage Areas Coverage: Complete factory service and repair information for 1989-1991 Dodge Ram Pickup Trucks. Page Count Pages: Estimated 1000+ pages (typical for comprehensive factory manuals of this era) Manual Type Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Engine: All engine variants including 3.9L V6 (5.9L V8) Magnum, 5.2L V8 Magnum, 5.9L V8 Magnum, and 5.9L Cummins Turbo Diesel. Transmission: Manual (Getrag G360) and Automatic (A500, A518, A727, A727 OD) transmissions. Drivetrain: Rear-wheel drive (RWD) and Four-wheel drive (4WD) systems, transfer cases (NP200, NP208, NP241). Suspension: Front and rear suspension systems, steering, alignment specifications. Brakes: Front disc and rear drum brake systems, ABS (if equipped). Electrical: Complete wiring diagrams, lighting, starting, charging, ignition, accessories, body control modules. Body: Body and chassis, interior and exterior trim, doors, windows, HVAC. Procedures Included Maintenance: Scheduled maintenance intervals, fluid changes, filter replacements, lubrication. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs), diagnostic procedures for all major systems. Repair: Step-by-step repair procedures for engine overhaul, transmission rebuild, suspension replacement, brake service, electrical component repair. Specifications: Detailed torque specifications, clearances, tolerances, and electrical specifications. Technical Depth Depth: Comprehensive factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format File Type: PDF Searchable: Yes, typically searchable text for easy information retrieval. Print Quality Quality: High resolution, clear diagrams and text for readability. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine 3.9L V6: 3.9L (239 ci) OHV V6, MPI (Multi-Point Fuel Injection). Power output approx. 125 hp @ 3600 rpm, 210 lb-ft torque @ 2000 rpm. Engine 5.2L V8: 5.2L (318 ci) OHV V8 Magnum, MPI. Power output approx. 170 hp @ 4000 rpm, 255 lb-ft torque @ 2400 rpm. Engine 5.9L V8: 5.9L (360 ci) OHV V8 Magnum, MPI. Power output approx. 190 hp @ 3600 rpm, 300 lb-ft torque @ 2400 rpm. Engine 5.9L Cummins: 5.9L (359 ci) OHV Inline 6-cylinder Turbo Diesel. Power output approx. 160 hp @ 2500 rpm, 400 lb-ft torque @ 1700 rpm. Performance Ignition System: Distributorless Ignition System (DIS) or distributor with electronic ignition. Fuel System Fuel Type: Unleaded gasoline for V6/V8, Diesel fuel for Cummins. Injection Type: Multi-point fuel injection (MPI) for gasoline engines. Indirect injection for early Cummins. 🔧 Transmission Standard Standard Transmission: 5-speed manual (Getrag G360) typically found on 5.9L Cummins and some V8 models. Optional Optional Transmission: 4-speed automatic transmissions: A500 (3.9L V6, 5.2L V8), A518 (5.9L V8, 5.9L Cummins OD), A727 (heavy duty 5.2L, 5.9L V8). Features Overdrive: Overdrive gear (4th) available on automatic transmissions for improved fuel economy. Transfer Case: Manual or electronic shift transfer cases (e.g., NP200, NP208, NP241). 📐 Dimensions Exterior Body Styles: Regular Cab, Club Cab (Extended Cab). Bed Lengths: Fleetside bed in 6.5-foot and 8-foot lengths. Weights Gvwr: Varies by configuration, typically ranging from 6,000 lbs to 10,000+ lbs for heavy-duty models. Towing Capacity: Up to 10,000+ lbs depending on engine, axle ratio, and configuration. 🛡️ Safety Features Ratings Crash Tests: Older vehicle, specific NHTSA/IIHS ratings for this era may be limited; refer to manual for specific safety system details. Active Features Brakes: Front disc, rear drum brakes. Optional Anti-lock Braking System (ABS) on rear wheels for 2WD, and rear wheels or all wheels for 4WD. Passive Features Restraints: Seat belts. 💡 Technology Features Infotainment Audio System: AM/FM radio, cassette player, optional CD player. Basic speaker configurations. Driver Assistance ABS: Rear-wheel ABS or full 4-wheel ABS available on certain models/options. Connectivity Diagnostics Port: OBD-I diagnostic port, typically located under the dash. Manual provides specific diagnostic procedures and connector pinouts. 🔧 Maintenance Service Intervals Oil Change: Gasoline: 3,000-5,000 miles or 3-6 months. Diesel: 5,000-7,500 miles or 6 months (consult manual for specific intervals). Tune Up: Spark plugs, filters typically every 30,000-60,000 miles depending on usage and engine. Fluid Specifications Engine Oil: Gasoline: API SG or higher, SAE 10W-30 or 10W-40. Diesel: API CD or CG-4, SAE 15W-40 (refer to manual for exact specifications and viscosity). Coolant: Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Mopar OAT or HOAT recommended. Transmission Fluid Auto: ATF+3 (or equivalent like ATF Dexron II/III for earlier models) for A500/A518/A727. Transmission Fluid Manual: GL-4 or GL-5 gear oil,...