idle problems when cold

when i start the car when cold it runs very rough at idle going up to 1500rpm then to where its about to die then back up over and over. it will also drive very sluggish. But once its warmed up it runs strong. it will also hold at 1500 rms for a few seconds then drop back down.

Im assuming I have a vaccume leak sense it holds at 1500rpm for a while but it only does it when it is cold so can i cut down my trouble shooting?

the car also misses and i checked the fuel pressure. with key on engine off it goes up to 19psi. With the engine started it climbs to 34psi. Shouldnt it stay the same? Then it jumps 2psi when ever i rev it. Then with engine off it holds. So i dont think there is a leak it just climbs slowly. But when starting the car it starts right up.

any thoughts?

ok i had a smoke machine shoot through the system and no leaks. I also replaced the iac motor. What other sensors are used during open loop?
is the act or map sensor used during open loop?

no codes but i think that act sensor is my problem b/c it has been relocated to the air box and im going to move it back to the intake. My guess is that the map and the act sensors are not giving each other proper readings anymore after the relocation. Maybe the readings just arnt off enough to pull a code. I don't know what do you think?