[gr8shot]

I bought a 454 (in my sig) thats doing a similar thing. I haven't figured it out yet either. I started unplugging sensors to see what would happen. I unhooked the electrical connection to the map sensor (back pass. side above intake manifold, black square box with vac. line and 3 prong electrical connection) and it's running pretty good. It would also run good with the coolant temp sensor unplugged. I haven't had much time to fool with it, but I've also got charging issues, so I'm hoping that it might go away when I solve those.

If you do figure it out, please let everyone here know. This seems to be happening to several people on here, and no amount of throwing parts seems to fix it.

PS, no mass airflow sensor on TBI motors, so thats a no-go.