I think most higher end cars are chain driven now, and frankly I would not buy a new one that was not. There were issues with chains as well, but car makers have worked those out.

Maybe that is what did it, once I really got on the gas climbing hills and such the tensioner slipped. Light came on heading up those hills...which I first thought was that connector coming un-plugged.....or maybe the sudden shut downs from the connector coming unplugged did it?