Reference cummins diesel motors in Ram 2500 and 3500 in model year 2019, Ram made the switch to a Bosch CP4 high pressure injection pump. (for model year 2021, Ram has switched back to the CP3 utilized prior to 2019) this pump is prone to sudden and catastrophic failure, which renders the vehicle immediately immobile. This can result in loss of control, inability to maneuver out of harms way and ultimately serious bodily injury.

- Rozet, WY, USA

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 NHTSA needs to force the hand of fca to recall.

- Santa Clara, CA, USA

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 NHTSA needs to force the hand of fca to recall.

- Shelton, CT, USA

Truck making ticking noise from engine from fuel pressure pump CP4?? makes noise at idle and when in motion sometimes jerks and stalls

- Shelton, CT, USA

Two different times while driving the vehicle stalled. Both times it was broken wires to the fuel pump. One had rubbed on something causing the break, not sure why the other one broke. I was on a highway both times. First time it happened was around 11/19/2020 the. Again on 12/11/2020

- Moretown, VT, USA

Truck has CP4 fuel injector pump. Pump can fail without warning. When it fails the pump distroys the fuel rail system. Truck can then leave the occupants in a dangerous situation. When pump shuts down the engine you loose steering and brakes. You also loose the exhaust brake feature. Has not happened on my truck. These pumps will fail at some point.

- Freedom, WI, USA

Fuel pump has failed twice in less than 6,000 miles. This truck was purchased new. Truck was moving down the street at normal town speeds ( less than 40 mph) started slowing and engine quit. Had to have the truck towed both times to home then towed to dealer for repair.

- Little Rock, AR, USA

CP4 pump noise

- Shelton, CT, USA

My Ram 2500 was picked up from Ram service center sat July 24th, on Sunday July 25th the engine failed on my wife and kids while driving down a curved county road. The vehicle lost power and would not restart. The vehicle has been in the shop since July 25tf. The vehicle only had 6,200 miles on it, and was only 6 months old.

- Bloomfield, KY, USA

While driving in a 40mph zone, the electronic throttle control (etc)light came on and the truck accelerated uncontrollably. After braking and getting the vehicle stopped, it was shut off and restarted. The etc light went out but the check engine light came on. Made an appointment with the dealer the next day and while en route to the dealer, the etc light came on, this time resulting in a power loss. It happened while entering a highway ramp, and could only get the vehicle speed gradually up to 40. Dealer attempted to clear codes and repair, but kept vehicle overnight for a test drive. During the dealer test drive, the etc light came on and the problem occurred again. So far there hasn't been a resolution, but the vehicle is unsafe to drive. It is a brand new 2019, with only approximately 400 miles on it, owned less than a week.

- Selkirk, NY, USA