2020 Ram 3500: engine stalls while driving

Filed Sep 9, 2025 · Fuel system · 38,000 miles · TX

The contact owns a 2020 Ram 3500. The contact stated that while driving at various speeds, the vehicle made an abnormal ticking sound. The vehicle was taken to the dealer, where it was diagnosed with high-pressure fuel pump failure, but the vehicle was not repaired at the time. The contact stated that upon pulling into a parking lot, the vehicle stalled. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that the high-pressure fuel pump had imploded, causing damage to the fuel system. The dealer related the failure to the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel), and the vehicle was repaired; however, the contact later became aware that the dealer had replaced the high-pressure fuel pump with the same part. The contact stated that upon taking the vehicle to an independent mechanic to be serviced, the mechanic informed the contact that the high-pressure fuel pump installed on the vehicle was not the recall part, but the same defective part. The mechanic recorded the high-pressure fuel pump and part number, and the vehicle was taken back to the dealer, where it was confirmed that the recall part had not been installed on the vehicle. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The contact stated that the dealer delayed performing the recall repair free of charge, which required the contact to pay for the replacement of the high-pressure fuel pump with the correct part. The vehicle was repaired. The contact stated that the manufacturer failed to complete the recall repair free of charge. The failure mileage was approximately 38,000.

Filed Feb 21, 2025 · Engine, Fuel system · ID

Codes: P2002, P242F, P2463, P1451 Failures: DPF, Charge air cooler leak, PM sensors, EGR internally cracked, Catalytic Convertor, Pink tinged oil, strong diesel odor in oil - post failures. Erratic def gauge readings, unstable idling, clunking downshift when exhaust brake decelerates, warm up stumbling. Power reduced, see dealer (over and over and over and over). Limp Mode (5 MPH). Permanent ticks/taps from front left motor, front passenger wheel well, passenger side mid-truck. Extremely loose gear shifter plus an occasional “Vehicle Not in Part” message on the dash display. Manufacturers Service Center (local and ONLY Ram dealership) has reproduced the issue. Independent Diesel Mechanic shop also reproduced. Service center and Independent shop both inspected. The safety issues of a 5 MPH limp mode and risk of sudden engine stalls while driving in traffic, especially on an interstate should be fairly self explanatory… As is a constant “Power Reduced See Dealer” problem, when your truck is used to do what it’s designed to do… Tow large loads. As is an extremely loose gear shifter that doesn’t always properly register as “in Park”. The date listed below is simply the date of the very first occurrence. It’s not a representation of every date after. The most recent date was just last week.

Filed Apr 6, 2022 · Engine, Fuel system · CA

While towing 5th wheel vehicle check engine light came on I was out of state in arizona vehicl then started to stall I canceled my trip checking all fluids headed back to California as I was nowhere near a dealership made a appointment at ram dealer when I got there light went out I talked with technician he said would have to leave it for 3 weeks before they could look at vehicle needless to say I took it home then in early Feb about 3 weeks after the first incident the check engine light came on again made appointment which was 3 weeks away just to check it in shop and a week before they even looked at the issue they found a cracked hose on inter cooler dealer stated vehicle ok well again on March 4 2022 vehicle again has check engine light on I took to auto store to check code same as before vehicle regeneration frequency it Regenerates ever 100 miles runs poorly uses excessive fuel hesitates when pedal depressed and long cranking time so now I have to be without a vehicle again

Filed Dec 27, 2021 · Engine, Fuel system · 24,000 miles · GA

The contact owns a 2020 RAM 3500. The contact stated while her husband was making a right turn, the vehicle began to stall. The contact stated do not turn off the vehicle until arriving at destination warning message was illuminated. The driver was able to continue driving under 15 MPH until arriving at a local dealer. The local dealer was unable to duplicate or diagnose the cause of the failure. The contact was informed that a specialist was needed to diagnose the vehicle. The contact stated that the dealer called back 2 days later and stated that some unknown cables needed to be replaced. The vehicle was repaired but continued to experience the same failure. The contact stated that the failure had been experienced a third time. The VIN was associated with the federal safety agency Campaign Number: 21V880000 (Fuel System, Diesel) and 21V398000 (Wheels). The manufacturer had not been informed of the failure. The failure mileage was approximately 24,000.

Filed Oct 21, 2021 · Acceleration, Fuel system · AZ

At 28,000 miles my vehicle in the middle of the Highway going up a hill stall and suddenly lose boost or was inoperable to safety get out of the road. i was able to do a unsafe maneuvering to get out of the way with the momentum of speed that i have at the moment When this happened a message on my screen said power boost service require,contact your dealer. Later and after the poor customer service in moreno valley ca. And yuma az my local dealer provide., i found out that my fuel pump(cp4) went down,completely destroyed on the inside sending metal particles trough the entire fuel system. 93,000 and again my vehicle went out of service exactly for the same reason(cp4) And now at 135,000 miles my vehicle is down again the reason is idle pulley broke and my serpentine belt got damage at the same time serpentine belt damage my crank sensor and i found out today that is on back order until the 3th week of november I have all documents in order to support the complaints im here to submit today

Filed Jan 7, 2021 · Engine, Fuel system · 1,834 miles · CA

The 2019 to 2020 model year ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a major safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system. The pump destroys itself and takes out the rest of the entire fuel system leading to repairs in the $20,000 usd range. Fca & ram have attempted to revise the pump in late (july) 2020 to solve the issue but the failures keep occurring. For the 2021 model year, fca & ram have changed the pump entirely and reverted back to using an older, safer, more reliable design. No public announcements of neither the pump revision in 2020, nor the pump change in 2021 have been made. The issue is so prevalent that the replacement pumps and repairs generally have a 30-90 day wait period where the customer is without the primary vehicle. This problem is a substantiated safety risk. According to a texas judge in a bosch cp4.2 lawsuit, when another automaker, gm tried to dismiss the case saying the pump failure is not a safety issue, the court responded: "the worst case scenario of a truck spontaneously stalling at high speeds is not a mere inconvenience. Nor is it a mere inconvenience to spend between $8,000 to $20,000 on repairs to make the trucks fit for their ordinary purpose. The court rejects gm's suggestion that the risk of spontaneous engine failure while driving is not, as a matter of law, unreasonably dangerous, depriving the vehicles of fitness for their purpose of transportation.". Toyota agrees: "if a vehicle stall occurs while driving at higher speeds, this could increase the risk of a crash". Fca & ram have remedied the situation for the 2021 model year however, the 2019 and 2020 owners are still at risk. The federal safety agency needs to force fca to recall these trucks.

Filed Jan 5, 2021 · Engine, Fuel system · 12,500 miles · FL

The 2019 to 2020 model year ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system.the pump destroys itself and takes out the rest of the entire fuel system leading to repairs in the $15,000-20,000 usd range. Fca & ram have attempted to revise the pump in late (july) 2020 to solve the issue but the failures keep occurring. For the 2021 model year, fca & ram have switched back the pump entirely and reverted back to using an older, safer, more reliable design cp3. No public announcements of neither the pump revision in 2020, nor the pump change in 2021 have been made. The issue is so prevalent that the replacement pumps and repairs generally have a 30-90 day wait period where the customer is without the primary vehicle. This problem is a substantiated safety risk. According to a texas judge in a bosch cp4.2 lawsuit, when another automaker, gm tried to dismiss the case saying the pump failure is not a safety issue, the court responded: "the worst case scenario of a truck spontaneously stalling at high speeds is not a mere inconvenience. Nor is it a mere inconvenience to spend between $8,000 to $20,000 on repairs to make the trucks fit for their ordinary purpose. The court rejects gm's suggestion that the risk of spontaneous engine failure while driving is not, as a matter of law, unreasonably dangerous, depriving the vehicles of fitness for their purpose of transportation.". Toyota agrees: "if a vehicle stall occurs while driving at higher speeds, this could increase the risk of a crash". Fca & ram have remedied the situation for the 2021 model year however, the 2019 and 2020 owners are still at risk.

Filed Jan 2, 2021 · Fuel system · SD

The 2019 to 2020 model year ram 2500 heavy duty equipped with a 6.7l cummins diesel engine has a major safety issue that could cause a stall and increase the risk of a crash. The bosch cp4.2 fuel injection pump has a very high rate of sudden failure leading to immediate stoppage on the engine and engine braking system. The pump destroys itself and takes out the rest of the entire fuel system leading to repairs in the $20,000 usd range. Fca & ram have attempted to revise the pump in late (july) 2020 to solve the issue but the failures keep occurring. For the 2021 model year, fca & ram have changed the pump entirely and reverted back to using an older, safer, more reliable design. No public announcements of neither the pump revision in 2020, nor the pump change in 2021 have been made. The issue is so prevalent that the replacement pumps and repairs generally have a 30-90 day wait period where the customer is without the primary vehicle. This problem is a substantiated safety risk. According to a texas judge in a bosch cp4.2 lawsuit, when another automaker, gm tried to dismiss the case saying the pump failure is not a safety issue, the court responded: "the worst case scenario of a truck spontaneously stalling at high speeds is not a mere inconvenience. Nor is it a mere inconvenience to spend between $8,000 to $20,000 on repairs to make the trucks fit for their ordinary purpose. The court rejects gm's suggestion that the risk of spontaneous engine failure while driving is not, as a matter of law, unreasonably dangerous, depriving the vehicles of fitness for their purpose of transportation.". Toyota agrees: "if a vehicle stall occurs while driving at higher speeds, this could increase the risk of a crash". Fca & ram have remedied the situation for the 2021 model year however, the 2019 and 2020 owners are still at risk. The federal safety agency needs to force fca to recall these trucks.

Filed Oct 26, 2020 · Engine, Fuel system · 16,684 miles · TX

Tl* the contact owns a 2020 ram 3500. The contact stated while driving 65 MPH and towing a generator up a hill, the vehicle stalled with the diesel exhaust and engine stability control warning lights illuminated. The vehicle was not drivable. The vehicle towed to platinum chrysler dodge ram jeep located at 65 tx-557 spur, terrell, tx 75160, (469) 249-9407, where it was diagnosed with needing the fuel pump to be replaced. The vehicle was not yet repaired. The manufacturer had been informed of failure. The failure mileage was approximately 16,684.