mustang won't idle when engines cold?

ok i have a few problems, so here they are.... I installed a set of BBK LTs and i haven't put in the O2s yet, so thats probably my problem with the engine not wanting to idle when its cold. so thats getting done today. and i have another problem, my tranny is slipping when it is cold too?? i don't know what the deal is with that? but it doesn't do it bad, just like once or twice, then it is done. but it almost got me killed the other day, when i was leaving work i pulled out and then it slipped and it didn't move for like 5 seconds, and i almost got smashed by a semi it sucked. so if anyone has any suggestions on what to do to fix the problem it is greatly appreciated. and yes i checked the fluid, it is fine.

transmission is an AOD with a 3,000 stall and a B & M shift kit in case you needed to know. thanks.
 
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