The 1998 Dodge Ram Van is a workhorse with solid chassis bones, but the drivetrain is a ticking time bomb past 100,000 miles. Transmission failures and engine internal wear are the dealbreakers, while cooling system neglect accelerates expensive teardowns.
46RE/47RE Automatic Transmission Failure
Common · high severityTypical onset: 90,000-150,000 mi
Symptoms: Delayed or harsh 2-3 upshift, especially when warm, Slipping under load or complete loss of forward gears, Whining from torque converter or internal bearings, Metal shavings in pan during fluid service
Fix: These transmissions eat overdrive clutches and governor pressure solenoids. Full rebuild with updated clutch packs, solenoid body, and input/output bearings is standard. Expect 12-16 hours labor for R&R and rebuild. Transmission cooler replacement mandatory during rebuild to prevent repeat failure.
Estimated cost: $2,200-3,800
5.2L/5.9L Magnum V8 Intake Manifold Plenum Gasket Failure
Common · medium severityTypical onset: 80,000-120,000 mi
Symptoms: Rough idle with P0171/P0174 lean codes, Loss of power on acceleration, Audible hissing from intake area, Oil consumption increases as gasket deteriorates
Fix: The composite plenum gasket cracks and creates vacuum leaks. Requires upper intake removal, gasket replacement with upgraded aluminum gasket kit, and throttle body cleaning. Budget 4-5 hours labor. Often reveals cracked plenum pan that needs replacement too.
Estimated cost: $450-750
Engine Internal Wear - Piston Rings and Valve Guides
Occasional · high severityTypical onset: 150,000-200,000 mi
Symptoms: Blue smoke on startup or acceleration, Oil consumption 1+ quart per 1,000 miles, Loss of compression and power, Fouled spark plugs on specific cylinders
Fix: High-mileage Magnums burn oil through worn rings or valve seals. Full teardown for rings, honing, valve job, and freeze plugs if coolant-contaminated. Reality check: 30-40 hours for complete overhaul. Most owners opt for junkyard engine swap instead at 15-20 hours labor.
Estimated cost: $3,500-6,500
Head Gasket Failure from Overheating
Occasional · high severitySymptoms: Coolant loss with no external leaks, White smoke from exhaust, Milky oil or coolant in oil, Overheating with good thermostat and water pump
Fix: Usually follows cooling system neglect or failed water pump. Requires both heads pulled, resurface, new gaskets, and timing chain inspection. Critical: check for cracked heads before reassembly. Budget 12-16 hours labor. If heads are warped beyond spec, add $400-600 for new castings.
Estimated cost: $1,800-2,800
Transmission Oil Cooler Line Corrosion and Leaks
Common · medium severityTypical onset: 80,000-140,000 mi
Symptoms: ATF puddles under front of vehicle, Low transmission fluid warnings or burnt smell, Lines rusted through at frame brackets, Drips visible along passenger side frame rail
Fix: Steel cooler lines rust from road salt and moisture. Replace both lines from transmission to radiator-mounted cooler. Use pre-bent steel or upgrade to braided stainless. Add auxiliary cooler if towing. 2-3 hours labor with proper flare tools.
Estimated cost: $300-550
Fuel Pump and Filter Clogging
Occasional · medium severityTypical onset: 100,000-150,000 mi
Symptoms: No-start or extended cranking when hot, Stalling under acceleration or at highway speed, Fuel pressure drops below 45 psi, Pump whine audible from rear
Fix: In-tank pump fails from contaminated fuel or age. Midship fuel tank requires chassis access, not cab removal on vans. Replace pump, strainer, and inline filter together. 3-4 hours labor fighting rusty straps and filler neck.
Estimated cost: $450-700
Front Suspension Ball Joint and Control Arm Bushing Wear
Common · medium severityTypical onset: 80,000-120,000 mi
Symptoms: Clunking over bumps from front end, Wandering or loose steering feel, Uneven tire wear on inside edges, Play in wheel when jacked up
Fix: Heavy van weight destroys ball joints and control arm bushings. Replace uppers and lowers together with alignment. OEM Moog or equivalent required for longevity. 4-6 hours labor for both sides with proper ball joint press.
Estimated cost: $600-950
Buy under 100,000 miles with documented transmission service or walk away — the cost to fix drivetrain failures exceeds the vehicle's value.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.