A Chrysler Pacifica engine stall lawsuit alleges the minivans can die on the highways at any speed, and Fiat Chrysler (FCA US) has no idea how to fix the problems.  The lawsuit includes all U.S. residents who purchased or leased 2017-2018 Chrysler Pacifica minivans equipped with 3.6-liter V6 engines and 9-speed 948TE automatic transmissions.