I am new to the mustang family, I just purchased a 2014 CS mustang with manual transmission. My problem is the engine shuts of when I put the clutch in to slow down. It does not happen all of the time. For instance when you going down the highway and the light turns red I put the clutch in a coast to a stop and sometimes the engines dies. I have searched other forums and others have had the same problem. I have taken the car back to the dealer and he says I need to down shift as I come to a stop instead of coasting. Is this correct? Or is he being a turd and trying to pull the wool of my eyes? He says I am not driving it right.