My 87 doge died we worked on it now the key wont work to start it has had problems befor when you turn it off it dont want to go off it sputters and sometime i have to turn the key back on then off just to get it to stop

All sign is pointing to a bad electric switch.
The ignition switch is consist of three parts.
1)key way 2)steering lock 3)electrical system
In your case,it can be a bad switch and/or worn linkage point where they connect.
As you turn the key,there is a shaft/linkage (just like a screw driver) that turn the electrical switch,
Over time the plastic center will worn down or crack.


Depend on your skill level you can pass a vacuum over the hosing to clean to as far as replacing the electrical switch.
This is a very inexpensive $15 part. ~1 hour of labor time.