stalling???!!!

[John '85]

I have an '85 4+3, and yesterday it stalled on me at a red light! it started up again [had a code 43, but that erased]. now today, stuck in traffic [the creatins just HAD to slow down to have a look at the car in trouble on the side of the highway!] and my Vette stalled again on a full stop! no codes [except for my code 32 that is always with me]. this is something new, tuned it up over a month ago, ran great until now.
any suggestions, or comments?

 

[Volkspanzer]

Check your idle speed and\or iac.