My 91 Z28 has been running a tad hotter than usual. I've attributed most of that to the 95+* temps lately. Its just shy of 220* when its normally noticeably lower. Anyway, it seems that once the motor gets up to 220 or so, it doesn't want to idle anymore. I have to give it gas to keep it running. Once underway, its not an issue and power delivery seems normal. Its only when its idling or trying to start it that I have to give it fuel.

Any ideas?