Idle problem?

I have a 2001 WS6 Trans Am... The other night I cranked it and it wouldn't idle, then after a few minutes (keeping the idle up myself) it began to idle - still not the normal idle though...when put in gear it went dead... then after a little bit of driving it wouldn't go dead when coming to a stop..
Well, last night I get in it and it cranks and runs fine and this morning it goes back to a rough idle. What gives? Has anyone else had this problem? Any suggestions?
It runs fine when driving, no skip or anything and the alternator appears to be charging. Also has a brand new battery...Please HELP! :banghead:

I have a 2001 WS6 Trans Am... The other night I cranked it and it wouldn't idle, then after a few minutes (keeping the idle up myself) it began to idle - still not the normal idle though...when put in gear it went dead... then after a little bit of driving it wouldn't go dead when coming to a stop..
Well, last night I get in it and it cranks and runs fine and this morning it goes back to a rough idle. What gives? Has anyone else had this problem? Any suggestions?
It runs fine when driving, no skip or anything and the alternator appears to be charging. Also has a brand new battery...Please HELP! :banghead:

I had an idle issue like that last fall. Turned out to be a vacuum leak at a t coupler.

Hmmm...but wouldn't that cause the check engine light to come on and the computer to store a code? Neither have happened yet....But Thanks I'll look for loose hoses or busted t's/couplers...
I just hate taking it to the dealer cause I know I'll get reamed!

im sure you have a vacum leak or timeing is off ut im not the smartest

Maybe a vacuum leak, it's just weird because it only does it when it is really cold outside....anyone know why this could be?

How about the idle air control valve.

IAC Valve! There ya go, Thanks!