A class action lawsuit alleges Fiat Chrysler (FCA) sold hundreds of thousands of Ram 1500 trucks equipped with defective exhaust gas recirculation (EGR) coolers between June 12, 2013 to October 23, 2019. The suit claims that the EGR coolers are prone to thermal fatigue, which makes the coolers more prone to internal cracks over time. An internal crack will then introduce preheated, vaporized coolant to the EGR system while the engine is running. This is a potentially dangerous situation as the intake manifold may combust and result in a vehicle fire if the mixture interacts with other hydrocarbons and air in the system. One of the plaintiffs in the class experienced just this: her truck suddenly lost power and caught fire.
A. (2021, January 15).
Ram 1500 EGR Cooler Recall. California Consumer Attorneys, P.C.
https://thelemonfirm.com/2021/01/18/ram-1500-egr-cooler-recall/