2021 Ram 2500 engine problems

Filed Sep 10, 2026 · Engine, Transmission · FL

I am writing to formally follow up regarding complaint/case number 97989810 through Dodge and to request that this matter be elevated for a complete technical review concerning my 2021 Ram 2500 6.7L Cummins, VIN [XXX]. Time - Line PRIOR FACTORY-WARRANTY REPAIR The XXX factory-warranty repair is an important part of this vehicle's mechanical history. That repair involved the timing-cover/timing-gear-case area and front crankshaft seal. As part of that repair, the harmonic balancer/vibration damper was removed and reinstalled. Approximately 26,000 miles later, the vehicle experienced a failure involving the vibration damper and its associated mounting bolts. +++ Vehicle receipt will be attached XXX took vehicle Naples Dodge after large thump and vehicle would not move Per dealership - Finding - Advise it was an after market tune that caused harmonic balancer got loose and sheered the bolts Ongoing the dealership provided video and several reports that it was an after market tune no coralation between the 2024 service and findings today Findings: Cummins Service Technician XXX technician report In XXX Cummins filed a safety recall with the federal safety agency (Campaign ID 24V‑192) concerning certain engines equipped with vibration dampers are the critical details of the recall:The Issue: The front vibration damper capscrews (mounting bolts) were not torqued to specification during assembly. If left unaddressed, the capscrews could fracture or loosen, potentially causing the vibration damper to separate from the engine. This creates a high risk of personal injury, mechanical failure, or property damage.(Note: If you are looking for Dodge Ram trucks, Cummins also issued a Technical Service Bulletin—TSB210097—addressing fluid degradation and capscrew fractures on viscous vibration dampers for B6.7 engines, though it was handled as a service bulletin rather than a sweeping automotive safety recall). Direct coralation of what occure INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 31, 2026 · Driver assistance, Engine · CA

The contact owns a 2021 Ram ProMaster 2500. The contact received notifications of the federal safety agency Campaign Numbers: 25V552000 (Back Over Prevention) and 25V720000 (Engine and Engine Cooling); however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The vehicle was taken to the dealer, and the contact was informed that the repair might take 2 or 3 days to be completed. The dealer was only able to pay for a rental vehicle for two days. The contact stated that 5 days later, the dealer was still waiting on parts from the manufacturer to repair the vehicle. The vehicle was not repaired. The manufacturer was not made aware of the failure. The contact had not experienced a failure.

Filed Mar 21, 2026 · Engine, Fuel system · KS · fire

Vehicle caught fire while engine was running, vehicle idling. Vehicle is a total loss. Prior the federal safety agency complaints regarding these vehicles causing fire from electrical components under the hood. Unknown if fire was due to electrical or leaking fuel issues under the hood. Major safety risk to occupants, especially children in car seats. Fire became out of control and burned the interior of the vehicle to bare metal. There were no injuries in this incident. This report being submitted by Law Enforcement on owners behalf. Full report from Law Enforcement included in this complaint.

Filed Mar 18, 2026 · Engine · TX

Ram is refusing to repair and item on my truck egr cooler is cracked, leaking and burning coolant. They have recalled every year model but mine. All have same issue, all have same part and part number. Dealership suggested I contact NTSB to see if I could get it recalled. It is said to cause ifres in some trucks

Filed Jan 4, 2026 · Engine, Transmission · CO

The lifters failed at 64,000 miles they where replaced under warranty. but now the lifters are making noise again with 71,000 miles since replaced. it’s a bad design that could be fixed permanently with the right parts! No warning lights just failure.

Filed Sep 24, 2025 · Engine · WA · fire

After starting the vehicle, fire smell came into the cab. After exiting the vehicle smoke was coming from the engine. The engine caught on fire and car was totaled within 10 minutes.

Filed Jun 18, 2025 · Engine · GA

Transmisson makes a whining noise when shifting gears when excelerating. I have taken it to the local ram dealership 4x now. Fca did approve a small transmission part repair, but unfortunalty it did not fix the problem.

Filed Apr 30, 2025 · Engine · KY

Imminent lifter failure. Has a very loud tick. This is a very common and almost always catastrophic failure. This is on the 6.7L Cummins engine

Filed Feb 6, 2025 · Engine · FL

The engine has had camshaft and lifter failure multiple times. The dealership has replaced the camshaft and lifters twice already , and now they have failed a 3rd time which has lead to metal in oil lubrication system. This has caused further damage to the engine crankshaft bearings, in my case the engine was still running with a tapping/knocking noise. However, this can result in engine locking up and causing vehicle to no longer operate. In the event of engine failure this heavy duty truck will have no power steering or power brakes, leading to a high likely hood of collision. This issue is widespread for all 2019+ RAM 2500 with the 6.7L Cummins engine. Ram has done nothing to address the faulty parts , and continue to replace with same flawed parts, and not correctly addressing the damage done to the engine after a lifter failure. Ram HD 2500,3500,4500,5500 are still being sold currently with these faulty parts.

Filed Jan 28, 2025 · Engine · TN

Heater quit working on driver side only. Still heats on passenger side. Took it into an ASE mechanic and they said they have seen multiple RAM trucks with this same problem. It isn't the heater or heater core. It is the Cooling system - gaskets failed, and coolant sprays across intake.