what would be the cause of no fire at all? on 2003 Chrysler PT Cruiser

was driving down the interstate, when car spuddered twice and died. now it has no fire at all and i've changed the oil switch what else could cause this to happen?

Asked by for the 2003 Chrysler PT Cruiser
Need more info. If the engine is not turning at all it could be the alternator has gone bad or the battery blew a cell and one or the other will need replaced get battery and alternator tested.