2018 Ram 3500 Fuel system Problems

“I had a warning message to service my DEF system. I had the truck checked at a RAM dealer who reported i need a new exhaust system. They had me wait a few days while they ordered parts. The message never reappeared and the truck is running fine. I dont understand why the dealer wanted me to replace my exhaust system when it apparently doesn't need one. The 2018 truck has only 18K miles on it.”

“On May 3, 2025, while driving my 2018 RAM 2500 with approximately 46,000 miles, the check engine light came on and the engine immediately experienced a significant loss of power. The vehicle entered a limp mode condition, drastically reducing speed and acceleration. I was forced to pull into a nearby business as the truck could not maintain safe highway speeds, creating a traffic hazard and contributing to congestion. The vehicle was diagnosed by a repair facility as having a failed turbo actuator, a critical component in regulating turbo boost and engine power delivery. …”

“The Bosch CP4 fuel pump internally disintegrated sending metal shavings throughout the fuel system. On the highway accelerating out of a toll both without warning, the truck lost almost all acceleration power and began to shudder. There weren't any preexisting warning lamps or messages. Any time after that when accelerating up to highway speeds quickly or attempting to maintain highway speeds the truck would lose acceleration and begin to shudder. When I took it to a mechanic, they informed me the CP4 fuel pump had grenaded and the whole fuel system needed to be replaced. …”

“Traction control and ABS work intermittently. Ram sent out this notification for recall concerning stated problems but state there is no fix at this time. They continue to state there is no fix. This is a safety issue and you are not forcing them to repair. They are dragging their feet hoping it goes away. DO SOMETHING!!!!”

“The contact owns a 2018 Ram 3500. The contact stated while driving at 60 MPH, the vehicle loss motive power with the accelerator pedal depressed. The contact stated that vehicle jerked and stalled with the check engine warning light illuminated. The vehicle was moved onto the shoulder. The vehicle was restarted however, the failure recurred twice. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that metal fragments had penetrated the fuel line filter and into the fuel pump. The vehicle was repaired and the fuel pump was replaced. …”