starter

Could be the starter relay and the ignition switch

ive changed the ignition switch already. but where is the starter rely located? how do i know if it is bad in the process of looking at it?

Follow the battery positive cable going to the starter motor it will take you to the starter relay-

Try banging on it when the starter continues to crank the engine over-could be sticking

the battery cable positive goes to the starter soliniod is that it that is mounted to the firewall? if so that has been replaced too.

Last place will be the ignition switch

that is located underneath the steering column and is like a rectangle box that plugs in? if so that has been replaced to that is what is puzzling me.

is there anything else it could be?