Segment:
Full-size pickup truck, known for robust construction and towing/hauling capabilities.
Competitors:
Ford F-Series, Chevrolet Silverado/GMC Sierra.
Vehicle Strengths:
Strong V8 engine options, durable chassis, spacious cab options, and significant towing capacity.
Utility:
Indispensable tool for owners and independent repair shops to maintain, diagnose, and repair the 1998 Dodge Ram Truck effectively and economically.
Systems Covered:
Engine mechanical, powertrain control, transmission, drivetrain, suspension, steering, brakes, body electrical, HVAC, interior, exterior, frame, emissions control, fuel system, cooling system, exhaust system, chassis, body repair.
Estimated Pages:
Over 2000 pages (typical for comprehensive workshop manuals of this era and scope)
Type:
Workshop Service Repair Manual
Format:
Downloadable Digital Format (e.g., PDF)
Engine Mechanical:
Detailed disassembly, inspection, repair, and reassembly procedures for all engine variants, including cylinder head, block, pistons, crankshaft, camshafts, timing systems, lubrication, and cooling.
Powertrain Control:
Engine control module (ECM) diagnostics, sensor identification, actuator testing, wiring diagrams, emission control systems, and on-board diagnostics (OBD-II).
Transmission:
Service and repair for automatic (e.g., 46RE, 47RE) and manual transmissions, including hydraulic controls, valve bodies, torque converters, clutches, bands, and gears. Drivetrain components like U-joints, driveshafts, differentials, and axle shafts.
Suspension And Steering:
Front and rear suspension component service (ball joints, tie rods, control arms, springs, shocks/struts), steering gear repair, power steering system, and alignment specifications.
Brakes:
Front and rear brake system service (disc and drum), ABS diagnostics and repair, hydraulic components, parking brake system, and brake fluid specifications.
Electrical System:
Complete wiring diagrams, component location, charging system (alternator, battery), starting system (starter motor), lighting, instrument panel, power windows, locks, mirrors, and trailer wiring.
HVAC System:
Air conditioning (A/C) system service, heater core replacement, blower motor, climate controls, refrigerant charging, and system diagnostics.
Body And Interior:
Door panel removal, seat adjustment/removal, dashboard disassembly, body panel alignment, glass replacement, bumper service, and interior trim components.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, fluid checks and changes, tire rotation, spark plug replacement, and tune-up procedures.
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting guides for common drivability, electrical, and mechanical issues.
Repair And Rebuild:
Complete step-by-step instructions for component repair and full system rebuilds, including torque specifications, clearances, and special tool requirements.
Diagnostics:
Detailed guidance on using diagnostic tools (scan tools), reading trouble codes (DTCs), and interpreting sensor data for precise fault identification.
Depth:
Comprehensive, covering everything from basic preventative maintenance to complete engine and transmission overhauls. Includes detailed specifications and tolerances for precision work.
Engine Options:
5.2L (318 cu in) Magnum V8, 5.9L (360 cu in) Magnum V8, 5.9L (359 cu in) Cummins Turbo Diesel I6.
Horsepower 5 2L:
Approx. 230 hp @ 4400 rpm
Torque 5 2L:
Approx. 300 lb-ft @ 3200 rpm
Horsepower 5 9L V8:
Approx. 245 hp @ 4000 rpm
Torque 5 9L V8:
Approx. 335 lb-ft @ 3200 rpm
Horsepower 5 9L Diesel:
Approx. 215 hp @ 2700 rpm
Torque 5 9L Diesel:
Approx. 420 lb-ft @ 1600 rpm
Injection Type Gasoline:
Sequential Multi-Port Fuel Injection (MPI)
Fuel Type:
Unleaded gasoline (87 octane recommended), Diesel fuel
Wheelbase Options:
Regular Cab (134.0 in), Club Cab (164.0 in), Quad Cab (164.0 in for early models, later 164.5 in).
Bed Length Options:
6.5 ft bed, 8.0 ft bed.
Gvwr Range:
Varies by model (e.g., 6,050 lbs to 10,000+ lbs for 3500 series).
Towing Capacity:
Up to 10,000+ lbs depending on configuration (engine, axle ratio, chassis).
Oil Change Interval:
Every 3,000-7,500 miles (depending on oil type and driving conditions, consult manual).
Transmission Fluid Interval:
Every 30,000-60,000 miles for automatic transmissions (severe duty may require more frequent service).
Engine Oil 5 2L 5 9L:
API Service SN or SP, SAE 5W-30 (check manual for temperature-dependent viscosity).
Engine Oil Diesel:
API Service CJ-4 or CK-4, SAE 15W-40.
Coolant:
Ethylene Glycol antifreeze, meeting Chrysler MS-9769 (typically a Mopar OAT coolant).
Transmission Fluid Auto:
ATF+4 (Mopar)
Transmission Fluid Manual Nv4500:
NV4500-specific fluid, often GL-4 rated.
Diesel Injector Washers:
Potential failure of injector hold-down clamp washers on the 5.9L Cummins leading to coolant loss into cylinders.
Transmission Governor Pressure:
Symptom of slipping or delayed shifts in automatic transmissions can be governor pressure related.
Dodge Tick:
Characteristic ticking sound from the 5.9L Cummins, often related to valve train noise or exhaust leaks.
Rear Main Seal Leaks:
Common wear item on higher mileage examples, requiring transmission removal for replacement.