TwoXtreme4Wrds

ok get this i buy my mustang an i get ready to drive it home i start it up and the starter is still cranking so i turn the car off and it is still cranking i disconnect the battery terminal change the starter and it still is cranking so i change the sylenoid it stops.... now im driving this wounder home and the car starts to over heat theres no antifluid .... lol figures i should of checked that before i left ..... so i put the anti freeze in and go to start the car and he starter stays cranking ... so now im stuck 20 miles from my house aaa wont tow the car because its not registerd and my final desprite move i cut the wire from the starter going to my syleniod hold the wire there and start the car then remove the wire and its fine .... the onyl way i can start me car now is holding the wire together starting it and then capping the wire now what can that be the starter or the syleniod .... it was a used starter i put int he car and a brand new syleniod ... one of my friends told me bad ground but im not sure if that is the problems can anyone help me with this ????