So i have a 01 mustang gt 5sp. I swapped a motor in with 73k miles. It ran good for about two months. The only problem i had was the coolant hose poppin out throwing all my coolant. After i fixed that my car started spuddering and bogging out and dying. Replaced the fuel pump. Spark plugs. Fuel filter. Also change the engine wiring harness cause the ones it had were ripped and nasty. Today i recieved the ecu and swapped it out and nothing. It doesnt turn on anymore it just cranks and cranks. Can anyone let me know whats going on to my pony?