Originally Posted by 240sxdm

I need some help on my swap, i ordered a black top i got it started, did the wiring and everything, but the problem i have is kinda has a perferct idle and then it starts having a rough idle and shuts off, and right now it has no power it doesnt pull or anythin. The whole car vibrates like if it has a miss or somethin. I havent changed the plugs on them either could that be it? Can anyone help please.