– A lawsuit against Ram CP4 claims fuel pumps are faulty in 2018-2020 Ram 2500, 3500, 4500 and 5500 trucks equipped with 6.7-liter Cummins diesel engines.
Bosch CP4 high-pressure fuel pumps would presumably have defects that cause metal parts to shatter against each other, which creates metal shavings that spoil fuel systems.
Ram CP4 class action lawsuit claims the pumps are unable to handle US diesel fuel, leading to complete engine failure.
Earlier this month, the National Highway Transportation and Safety Administration has opened an investigation into nearly 605,000 ram trucks equipped with Bosch CP4 fuel pumps.
The Ram fuel pump investigation includes 2019-2020 Ram 2500, Ram 3500, Ram 4500 and Ram 5500 heavy trucks equipped with 6.7-liter Cummins diesel engines. The government says 22 complaints have been filed regarding CP4 fuel pumps.
The Ram CP4 fuel pump lawsuit was filed by Larry Sharp (2018 Ram 3500), Davey Dockens (2019 Ram 3500) and Jason Palmer (2019 Ram 2500). However, the class action does not claim that their CP4 fuel pumps have failed or been repaired.
Ram CP4 cause: diesel fuel as lubricant
According to the plaintiffs, Ram fuel pumps are too fragile to withstand US diesel fuel specifications regarding water content and lubrication.
CP4 fuel pumps purportedly use a cam and two “pump cylinders with individual rollers designed to roll together without jumping, slipping, sticking or wearing to function effectively.”
“If the fuel used with the CP4 pump is not sufficiently lubricating – which most US diesels are not – the cam and rollers wear against each other and generate tiny metal chips that are dispersed throughout the high pressure fuel injection system “. – Cause Ram CP4
The metal shavings presumably cause the fuel injectors to block which kills the Cummins diesel engine. Plaintiffs argue that Ram owners will pay at least $ 10,000, but any repairs allegedly won’t work because replacement parts will again be damaged by American diesel fuel.
The Ram CP4 lawsuit claims that the first tank of diesel fuel will begin to destroy the engine and fuel system as the metal shavings travel through the engine.
A Ram truck will not only stop, but an owner will not be able to restart the engine, leaving the occupants stranded on dangerous roads.
Chrysler never warned Ram customers of the alleged CP4 fuel pump problems and did not describe the safety risk of driving trucks that could die in motion. And plaintiffs say Chrysler often refuses to pay for warranty repairs because the CP4 fuel pumps would have failed due to the use of contaminated gas.
However, plaintiffs argue that the “poor fuel quality” defense employed by FCA will not fly because there is no way for a ram owner to know if the fuel is contaminated while filling the tank.
“[I]It is virtually impossible for customers to determine fuel quality when they fill up at the pump, and “bad” refueling can lead to catastrophic failure. Consumers have no way to assess the quality of the fuel they purchase or to confirm whether a fuel complies with the applicable requirements. “- Cause Ram CP4
In addition to Fiat Chrysler, plaintiffs are suing manufacturer Cummins who built the 6.7-liter Turbo Diesel engines.
Ram Case CP4 was filed in the United States District Court for the Eastern District of Michigan: Sharp, et al., V. FCA US LLC, and others.
The plaintiffs are represented by the law firm Miller, PC, Hagens Berman Sobol Shapiro LLP and Hilliard Martinez Gonzales LLP.