havin a problem idling

[240sxdrifter s13]

ok well heres whats goin on i have a 93 240 and i just did an engine swap and i went to start it up and it starts but after about 5 seconds it shuts off i dunno whats the problem soo i replaced all of my vacuum hoses and its still makin a whilstling noice from the back off the engine but it might not even be a leak. i no its not a hose i have bo idea what the hell it is so if anyone know anythin about this let me know please thanks

[spoolings14]

check your idle air control (IAC) valve or the air passage way to the valve from the intake. I had the same problem, my problem was that the hose from the intake to the IAC valve air pipe was kinked so it wasnt getting any air.

[240sxdrifter s13]

it sounds like it whislting right from thier so maybe the line that ur talkin about is crackedor somthin thats the only one i ddnt check