2001 AE A/T
Idles fine @ 700~ RPM.

Sometimes, and only sometimes, (cold or warm) when gassed up in Neut/Park, it'll miss 700rpm on its way back down, go as low as 200 rpm, and either sputter, catch itself and idle back upto 700, or stall altogether.

Ideas??

could be MAF.

maf or coil starting to go out would be my guess

So this would have nothing to do with the IACV? I've been very paranoid about my IACV since hearing about all the fried ECU's...