RAM 1500

COMMON PROBLEMS: eTorque Software Fault, Manifold Bolt Breakage, ZF Converter Shudder, Pinion Seal Leak, MDS Lifter Collapse

The eTorque 48V mild hybrid on 2019 and newer 1500s develops software faults that disrupt the start-stop function and flash warnings across the instrument cluster. Exhaust manifold bolts on the 5.7L Hemi snap from thermal cycling, and the exhaust leak ticks on cold start until the metal expands and closes the gap. ZF 8HP75 torque converter shudder during towing comes from the converter clutch material wearing under thermal load. Rear differential pinion seal weeps fluid under loaded axle conditions, and you’ll spot the drip on the garage floor before the differential fluid level drops enough to cause noise. MDS lifter collapse in the 5.7L Hemi produces a tick that gets louder under load and doesn’t quiet down with fresh oil.

RAM 2500

COMMON PROBLEMS: EGR Cooler Failure, DEF Heater Fault, 68RFE Converter Shudder, Stabilizer Damper Wear, Track Bar Bushing

The 6.7L Cummins EGR cooler fails and lets coolant enter the intake tract, producing white exhaust smoke that smells sweet and a coolant level that drops without a puddle on the ground. DEF heater element failure in cooler weather prevents the SCR system from reaching operating temperature, and the engine management system responds with a derate that caps your speed and pulling power until the repair is finished. The 68RFE six-speed torque converter shudders at highway cruise in a way that mimics rumble strips when the road surface is clean. Steering stabilizer damper wear produces a shimmy through the wheel over freeway expansion joints. Front track bar bushing wear on the solid front axle allows the axle to shift laterally under braking and creates a steering wander that tire alignment can’t fix.

RAM 3500

COMMON PROBLEMS: CP4.2 Pump Failure, Aisin Filter Restriction, Exhaust Brake Wear, Leaf Spring Bolt Shear, Axle Seal Leak

The Bosch CP4.2 high-pressure fuel pump on the 6.7L Cummins fails from fuel contamination, and the pump sends metal particles through every injector, fuel line, and the tank itself. The repair means replacing the entire fuel system, and class action litigation has been filed against Stellantis over the design. Aisin AS69RC transmission internal filter restriction degrades shift quality between service intervals because the filter catches debris that the fluid can’t flush out. Exhaust brake actuator wear reduces engine braking on grades where you need it most. Rear leaf spring center bolt shear under heavy payload shifts the axle position and changes the driveshaft angle. Dually rear axle seals leak at the hub and contaminate the inner brake surface with differential fluid.

RAM PROMASTER

COMMON PROBLEMS: Pentastar Gasket Leak, Transaxle Mount Failure, Door Cable Fatigue, Drum Brake Scoring, Coolant Sensor Fault

Every vehicle in the Stellantis lineup that runs the 3.6L Pentastar V6 develops the same oil filter housing gasket leak, and the ProMaster is no exception. Front transaxle mount failure from commercial payload cycling vibrates through the drivetrain under acceleration, and the vibration worsens with cargo weight in the back. Sliding door cable routing fatigues from thousands of daily open-close cycles in delivery and service fleet use, and the door binds against the track before the cable snaps. Rear drum brakes score when the cargo weight exceeds the drum’s thermal capacity during repeated stops. Engine coolant temperature sensor faults delay cooling fan activation and let the engine run hotter than it should during low-speed driving.

RAM DAKOTA

COMMON PROBLEMS: Tensioner Failure, Ball Joint Wear, Speed Sensor Fault, Relay No-Start, Frame Corrosion

Dakota timing chain tensioners on the 3.7L V6 and 4.7L V8 weaken with age, and the chain slaps against the guide on cold start with a rattle that gets longer every month until the tensioner runs out of travel. Front lower ball joints carry the Dakota’s nose-heavy weight distribution, and they wear through faster than any other front-end component on the truck. Transmission output speed sensor failure confuses shift timing and throws the speedometer reading off by enough to notice. Fuel pump relay intermittent failure kills fuel delivery without setting a code, and the engine dies at a stoplight and restarts after you cycle the key. Frame crossmember corrosion builds over the life of the truck, and coastal East Bay salt air doesn’t slow it down.