Thread: mystery plug

Oh and mine is more square maybe diff years possibly but car will not start when i hit key it will crank and run for 15 sec and die but i beleive i need a vat chip key which the previous owner didnt give me i have a plain key that the dealer ship cut for me no chip it turns ignition but when go to start nothing is it the key? Cuz other then that i have no idea bought car expecting to put a motor in and go but the key was wrong and ive had it up to here with the car help me plz