My friend had a '93 Chevy Blazer with a 4.3 V6 Vortec engine. Had the same exact problem. Would run fine when at idle, but giving it gas would make it die out. I changed the spark plug wires, the distributor, and rotor button. That solved the problem. Never had a problem since then. Hope this helps. Good luck.
Friday, July 30th, 2010 AT 9:09 PM