I have been trying to get my 1982 Corvette running the way it's supposed to. I have replaced everything. I have had a couple professional mechanics work on it and still nobody can get it running properly. It finally starts fine and purrs like a kitten, but after a minute or two it just dies. When I drive it, it just isn't right. It will also die while driving, whether I'm going 35 mph or 65 mph. It even misfired on me today while attempting to drive it home. We have tuned and timed it and still this problems persists. When I come to a stop, especially when I place it in park, the idle shoots high, approximately 1200 rpms. Other times it goes up and down like a vacuum leak. We are convinced there are no vacuum leaks. All we can guess at is perhaps the ECM is bad. I did have Cardone rebuild one for me just last summer/fall. I've added a new chip from Summit Racing for a 1984 Corvette. Yes my Vette is a 1982, but I was told that is shouldn't hurt anything to have a 1984 ECM especially since the 1984 had the crossfire as well. I need help. Does anybody know the crossfire engine like the back of their hand? What can I do to get it running perfectly?