According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1998 RAM 1500 has 7 documented known issues, with 2 rated critical. The most serious are 5.2L/5.9L Magnum Intake Manifold Plenum Pan Gasket Failure (Oil Burning, Misfire, Cat Damage) ($150-$600 repair) and 42RE/46RE Governor Pressure Solenoid and Sensor Failure — Limp Mode / Wrong-Gear Start ($150-$500 repair). Across all issues with published estimates, repair costs range from $50 to $3,000. DIY maintenance guides at au7o.io.
On the 1994-2001 RAM 1500, on Magnum-engine Rams the intake manifold has a stamped-steel plenum pan sealed to the aluminum manifold by a one-piece gasket. Because steel and aluminum expand at different rates, the gasket tears over time and lets engine oil from the lifter valley get drawn into the intake plenum and burned. Virtually every high-mileage 3.9/5.2/5.9 Magnum develops this. Burned oil fouls the oxygen sensors, causes detonation (pinging), and can destroy the catalytic converters if ignored.
Blue smoke / oil pooled in bottom of intake plenum
Fouled spark plugs and O2 sensors
How to Fix
Remove the intake, discard the OE stamped plenum pan and install an aftermarket billet/thicker steel plenum repair plate with a new gasket (commonly sold as a 'plenum repair plate kit', e.g. from plenumrepairplate.com), or install a Mopar/Fel-Pro intake gasket set (Fel-Pro MS 90314 series plenum/valley gaskets). Inspect and replace fouled O2 sensors afterward. DIY parts run roughly $60-$180 (gasket/plate kit); shop labor adds the rest.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Hughes Engines HUG 7720FEL V8 Magnum plenum repair kit
1992-2003 Dodge/Jeep 5.2L and 5.9L Magnum V8 only; includes aluminum plate, premium Fel-Pro gaskets, bolts and bypass hose. Not for the 3.9L V6.
On the 1994-2001 RAM 1500, the 3.9/5.2/5.9 Magnum uses a camshaft position sensor inside the distributor plus a crankshaft position sensor on the bell housing. These sensors are heat-sensitive and fail intermittently — the engine stalls or dies when hot and refuses to restart until it cools, or cranks-but-won't-start with no other symptom. Corroded/loose sensor connectors cause the same behavior.
Inspect the sensor connectors/wiring for corrosion or a pulled pin first. Replace the failing sensor with a Mopar unit (owners report frequent failures of cheap aftermarket sensors): camshaft (distributor pickup) sensor Mopar 56027868 and crankshaft position sensor 56027865 (verify by engine/year). On distributor-cam-sensor trucks a full distributor may be needed if the pickup is integral. Parts $30-$150; typical $50-$250.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Mopar 56027272 crankshaft position sensor
1994-1996 Dodge Ram 1500 3.9L, 5.2L or 5.9L applications listed; confirm OE 56027272 and connector before purchase.
Crankshaft position sensor replacing Mopar 56027870AB
The live page explicitly lists 1998 3.9L and 1999-2003 5.9L Ram 1500 applications; other 1997-2003 automatic Magnum combinations must be confirmed by OE number/VIN rather than inferred.
On the 1994-2001 RAM 1500, the electronically-controlled 42RE/46RE automatics regulate shift points with a PWM governor pressure solenoid plus a governor pressure sensor/transducer in the valve body. These parts get contaminated by transmission varnish and wear out. When the sensor feedback no longer matches the commanded pressure, the PCM sets a code and drops the transmission into 'limp' mode — no overdrive, 2nd/3rd-gear start, harsh or no shifts. Extremely common on high-mileage 2nd-gen Rams.
Transmission stuck in limp mode (2nd/3rd gear only)
No overdrive / no lockup
Wrong-gear starts
Harsh or delayed shifts
Speedometer-related shift errors
How to Fix
Drop the pan and replace the governor pressure solenoid (Mopar 4617210) and the governor pressure sensor/transducer (56028196AD, supersession of 56041403AA); available together as an aftermarket kit (e.g. Hercoo/TransGo). Fresh ATF+4 and a filter at the same time. DIY parts ~$40-$120; shop job $150-$500. Confirms and clears P0748/P1757/P0868 limp-mode codes.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
1996-1999 42RE/46RE governor pressure transducer 56041403AA family
On the 1998-2010 RAM 1500, rams with the Sentry Key Immobilizer Module (SKIM/WCM) can lock out the fuel injectors if the module fails to read a valid transponder key. The engine cranks, fires for ~2 seconds, then dies, and the security/theft light stays on or blinks. Causes include a failing SKIM/WCM, a damaged antenna ring around the ignition lock, a worn transponder chip in the key, or wiring/connector corrosion.
Intermittent no-start that clears after re-inserting key
No-start with a worn or non-transponder key
How to Fix
Read the security light while cranking (blinking = SKIM lockout). Diagnose with a scan tool that can access SKIM (basic code readers can't). Fix per cause: reprogram/relearn keys, replace the antenna ring, or replace and re-flash the SKIM/WCM (dealer or locksmith with the PIN). Verify battery/ground first. Typical $100-$400 depending on module vs. key relearn.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Ilco Y160-PT 4D-64 transponder key blank
2002-2005 Dodge Ram 1500 as explicitly listed; must be cut to the vehicle and programmed. With two valid keys, some builds support owner programming; otherwise use a locksmith/dealer.
On the 1994-2001 RAM 1500, second-gen 4WD Rams use a vacuum-operated Central Axle Disconnect (CAD) on the front axle to lock the right axle shaft when 4x4 is selected. The rubber/plastic vacuum lines become brittle and crack, the vacuum switch fails, or the CAD diaphragm/actuator ruptures — so the transfer case engages but the front axle never locks in and there's no front drive (or it won't disengage). A frequent cause of 'my 4x4 doesn't work.'
Transfer case shifts to 4x4 but no front-wheel drive
4WD won't engage or won't disengage
Grinding/no lock at the front axle
Vacuum leak / rough idle from cracked CAD lines
How to Fix
Diagnose vacuum before parts: with engine running, one line to the axle shift motor should read ~20 in-Hg and switch when the transfer case is shifted. Replace cracked vacuum lines and the vacuum switch first; replace the CAD actuator if the diaphragm is ruptured. A permanent fix is a cable-operated 4x4 Posi-Lok kit that eliminates the vacuum system. Parts $30-$200; typical repair $100-$400.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Dorman 600-202 front-axle 4WD vacuum actuator
1994-2001 Dodge Ram 1500 with applicable CAD axle shown by Dorman/JEGS; Dorman 600-202 crosses 4506116/4882682. Fitment/availability: Direct purchase page live at review
On the 1994-2008 RAM 1500, these Rams are widely known for rust-through at the rear wheel arches, lower quarter panels, cab corners, rocker panels, and the bed (inner bedside rusts out to the exterior on trucks through ~2006 due to poor drainage and moisture-trapping foam in the bed rails). It is severe and common enough that a large aftermarket of stamped repair panels exists specifically for these years.
Address early: treat surface rust, keep drains clear. For rust-through, cut out the affected metal and weld in reproduction panels — rear wheel-arch skins, cab-corner patches, rocker and bed patch panels (Raybuck, Mill Supply, Classic 2 Current). Prime, seal, and undercoat. DIY panels cost $30-$150 each; professional cut-and-weld with paint runs $500-$3,000+ depending on extent.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Key Parts 1994-2001 fleetside upper rear wheel-arch panel, driver side
1994-2001 regular-cab lower cab-corner panel, passenger side
1994-2001 Dodge Ram 1500 standard/regular cab, passenger side only; not Quad Cab or driver side. Fitment/availability: Direct purchase page live at review
2002-2008 regular-cab lower cab-corner panel, driver side
2002-2008 Dodge Ram 1500 two-door/regular cab, driver side only; not Quad Cab or passenger side. Fitment/availability: Direct purchase page live at review
On the 1994-2010 RAM 1500, the in-tank fuel level sending unit (float arm and variable-resistor card, part of the fuel pump module) wears out and gives false readings — commonly reading full then dropping to empty, sticking, or bouncing. On OBD-II trucks it sets P0463/P0462. It is one of the most-searched Ram gauge complaints and is separate from the instrument-cluster fault.
Confirm the sender resistance sweep before replacing the cluster. Repair requires dropping the tank (or removing the bed) and replacing the fuel level sending unit — often done as a complete fuel pump/sender module for reliability. Avoid the cheapest unbranded senders, which frequently read wrong out of the box; use a quality module (Delphi/Spectra/Mopar). Parts $60-$250, with labor $150-$500.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
Carter P74673M fuel pump and level-sender module
1994 Dodge Ram 1500 gasoline 3.9L, 5.2L or 5.9L with Carter-style module as listed; do not extend to later connector designs without exact match.
1998-2000 Dodge Ram 1500 with 26- or 34-gallon tank as listed; confirm engine, connector and OE cross-reference. Other 1998-2001 tank/engine combinations use different modules.
Agility 4011439 / Carter P76846M fuel module assembly
2007 Dodge Ram 1500 applications cross-referenced to Carter P76846M and Mopar 68004489AA; use the retailer engine selector and confirm tank capacity/OE label.
Genuine Mopar 68027917AE fuel pump and level-sender module
Selected 2008 Dodge Ram 1500 SLT/ST regular- and quad-cab 3.7L, 4.7L and 5.7L applications shown; confirm cab/bed, tank and VIN because several other 2008 modules exist.
POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
Chrysler (FCA US LLC) is recalling certain 2016-2017 Ram 3500 Cab Chassis with a Gross Vehicle Weight Rating (GVWR) of less than 10,000 lbs, 2011-2017 Ram 3500, 4500 and 5500 Cab Chassis vehicles, 2009-2017 Ram 1500 and 2010-2017 Ram 2500 and 3500 pickup trucks, all equipped with a column shifter. Pushing the brake pedal for prolonged periods when the vehicle is running and in PARK may cause the Brake Transmission Shift Interlock (BTSI) pin to stick in the open position. With the pin in the open position, the transmission can be shifted out of PARK into any gear without pushing the brake pedal or having the key in the ignition.
Chrysler (FCA US LLC) is recalling certain 2009-2012 Dodge Ram 1500 trucks currently, or ever registered, in Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin and the District of Columbia. Exposure to environmental conditions such as water mixed with road salt may cause the front fuel tank strap frame "T-Slot" bracket to corrode, possibly causing the fuel tank to drop and make contact with the ground.
Campaign #18V16000008/03/2018
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
Chrysler is recalling certain model year 2009-2012 Ram 1500 trucks manufactured from February 27, 2008, through June 30, 2009, and from December 1, 2009, through October 20, 2011; model year 2009-2011 Dodge Dakota trucks manufactured from February 27, 2007, through June 30, 2009, and from December 1, 2009, through September 30, 2011; model year 2009 Chrysler Aspen trucks manufactured from January 3, 2008, through December 18, 2008; and model year 2009 Dodge Durango trucks manufactured from January 3, 2008, through December 18, 2008. The rear axle pinion nut may loosen due to an undersized pinion spline that can allow relative motion between the nut and companion flange.
Campaign #13V03800006/02/2013
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
Chrysler is recalling certain model year 2009-2010, Ram 1500 and Dodge Dakota trucks, manufactured from July 1, 2009, through November 30, 2009, because the rear axle pinion nut may loosen due to a lack of adhesive.
Campaign #12V47400002/10/2012
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1998 RAM 1500 has 7 documented issues. The most frequently reported are: 5.2L/5.9L Magnum Intake Manifold Plenum Pan Gasket Failure (Oil Burning, Misfire, Cat Damage), 42RE/46RE Governor Pressure Solenoid and Sensor Failure — Limp Mode / Wrong-Gear Start, Sentry Key Immobilizer (SKIM/WCM) No-Start — Security Light On, Cranks But Won't Run. Of these, 2 are rated critical and should be addressed promptly.
Is the RAM 1500 reliable?
The 1998 RAM 1500 has 7 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 2 issues are rated critical: 5.2L/5.9L Magnum Intake Manifold Plenum Pan Gasket Failure (Oil Burning, Misfire, Cat Damage) and 42RE/46RE Governor Pressure Solenoid and Sensor Failure — Limp Mode / Wrong-Gear Start. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common RAM 1500 problems?
Repair costs for known RAM 1500 issues range from $50 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 5.2L/5.9L Magnum Intake Manifold Plenum Pan Gasket Failure (Oil Burning, Misfire, Cat Damage), typically costs $150-$600 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 1994-2001 RAM 1500 5.2L/5.9L Magnum Intake Manifold Plenum Pan Gasket Failure (Oil Burning, Misfire, Cat Damage)?
On Magnum-engine Rams the intake manifold has a stamped-steel plenum pan sealed to the aluminum manifold by a one-piece gasket. Because steel and aluminum expand at different rates, the gasket tears over time and lets engine oil from the lifter valley get drawn into the intake pl… Repairs typically run $150-$600. Severity: high.
What is the 1994-2001 RAM 1500 42RE/46RE Governor Pressure Solenoid and Sensor Failure — Limp Mode / Wrong-Gear Start?
The electronically-controlled 42RE/46RE automatics regulate shift points with a PWM governor pressure solenoid plus a governor pressure sensor/transducer in the valve body. These parts get contaminated by transmission varnish and wear out. When the sensor feedback no longer match… Repairs typically run $150-$500. Severity: high.
What is the 1998-2010 RAM 1500 Sentry Key Immobilizer (SKIM/WCM) No-Start — Security Light On, Cranks But Won't Run?
Rams with the Sentry Key Immobilizer Module (SKIM/WCM) can lock out the fuel injectors if the module fails to read a valid transponder key. The engine cranks, fires for ~2 seconds, then dies, and the security/theft light stays on or blinks. Causes include a failing SKIM/WCM, a da… Repairs typically run $100-$400. Severity: medium.
What is the 1994-2001 RAM 1500 4WD Central Axle Disconnect (CAD) Vacuum Actuator / Line Failure — 4x4 Won't Engage?
Second-gen 4WD Rams use a vacuum-operated Central Axle Disconnect (CAD) on the front axle to lock the right axle shaft when 4x4 is selected. The rubber/plastic vacuum lines become brittle and crack, the vacuum switch fails, or the CAD diaphragm/actuator ruptures — so the transfer… Repairs typically run $100-$400. Severity: medium.
What is the 1994-2001 RAM 1500 Magnum Camshaft/Crankshaft Position Sensor Failure — Hot Stall and No-Restart?
The 3.9/5.2/5.9 Magnum uses a camshaft position sensor inside the distributor plus a crankshaft position sensor on the bell housing. These sensors are heat-sensitive and fail intermittently — the engine stalls or dies when hot and refuses to restart until it cools, or cranks-but-… Repairs typically run $50-$250. Severity: medium.
What is the 1994-2008 RAM 1500 Body Rust — Rear Wheel Arches, Cab Corners, and Bed Rot?
These Rams are widely known for rust-through at the rear wheel arches, lower quarter panels, cab corners, rocker panels, and the bed (inner bedside rusts out to the exterior on trucks through ~2006 due to poor drainage and moisture-trapping foam in the bed rails). It is severe an… Repairs typically run $500-$3,000. Severity: medium.
What is the 1994-2010 RAM 1500 Fuel Level Sending Unit Failure — Inaccurate, Stuck, or Erratic Fuel Gauge?
The in-tank fuel level sending unit (float arm and variable-resistor card, part of the fuel pump module) wears out and gives false readings — commonly reading full then dropping to empty, sticking, or bouncing. On OBD-II trucks it sets P0463/P0462. It is one of the most-searched… Repairs typically run $150-$500. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
