Q: SUGGESTIONS. My car died, old light came one, now won't start. What it may be. on 2006 Chrysler Pacifica

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First time this has happened. It also blew the radiator cap.
(1) Answer
Let's start with the last line: "It also blew the radiator cap". Sounds like maybe the engine overheated and shut down? You could have a major concern, and you definitely need the help of a local shop to help evaluate your Pacifica.