just got done doing an ls swap and my car idles rough... i hooked up all the vacumm lines up and still a rough idle.. i got new dist.,spark plugs,wires, almost everything i can think of is new..can any1 help me out by chance... thanks brandon

 

Do you have any CELs?

Is the idle speed set correctly? TPS calibrated properly?

 

no check engine light at all

 

check and make sure all ur ground wires are clean and connected. check the little boxes on each side of the engine compartment, they should be right by the lights on eachside. make sure they are clean and rust free. then try it. I had the same problem b4. I i couldnt figure out why it was idling badly. lceaned all the grounds and poooooffffff. perfect idle. keep me posted.