[Tommy]

My next move would be to reset the warm idle to 11-1200 RPM just for diagnosis. Repeat the action that caused the engine to die before and see what happens. If the engine dies again, I'd focus more on electrical causes. If it keeps running, I'd focus on the fuel system. .... My thinking is that the rapid acceleration/deccleration may inded be causing something electrical to move; but it is also possible that going from near wide open throttle to fully closed butterflies may be causing an air fuel ratio problem. ... For the record, I'm far from an expert on this topic. If someone better informed comes along, take their advice over mine.