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NHTSA is investigating Ram diesel high-pressure fuel pumps

Roadshow logo Roadshow 10/19/2021 Kyle Hyatt
A faulty high-pressure fuel pump is a big problem in a modern diesel. Ram © Provided by Roadshow A faulty high-pressure fuel pump is a big problem in a modern diesel. Ram

The National Highway Traffic Safety Administration is working with Stellantis to investigate potential high-pressure fuel pump failures in its 2018-2020 Ram trucks with the 6.7-liter Cummins diesel engine. According to an announcement by NHTSA Oct. 14, there have been 22 reports of pumps failing.

A diesel engine lives or dies, literally, by its high-pressure fuel pump, thanks to the massive pressures required to atomize diesel fuel sufficiently for efficient combustion. A failing or failed pump can cause stalling or a no-start condition. The NHTSA document states that so far all failures have happened at speeds over 25 mph.

A faulty high-pressure fuel pump is a big problem in a modern diesel. © Ram

A faulty high-pressure fuel pump is a big problem in a modern diesel.

This investigation hasn't yet been turned into a recall, nor is it clear how many vehicles would be affected if it gets elevated that far -- NHTSA estimates up to 604,651 -- but only time will tell for sure.

2019 Ram 2500 HD gets accessorized with Mopar goodies

a blue truck parked in front of a building: Mopar introduced an accessorized 2019 Ram 2500 HD at the 2019 Chicago Auto Show.

Mopar introduced an accessorized 2019 Ram 2500 HD at the 2019 Chicago Auto Show.
© Provided by Roadshow
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