01 Dodge Ram 1500 SLT won’t start?

Truck drove fine all day yesterday, drove to
gas station put gas in it and it cranked for a
second then died. We had just replaced the
idle sensor last week. Cleaned distributor,
replaced wires because when we went to
check plugs the inside of boot on the wire was
attached to the top of plug, changing plugs
next. If this doesn’t fix it what should be done
next??