Turbo? (trigger pulse derived from distributor).
Inspect carefully the small connector on the side of the distributor for heat damage and or plastic fatigue, compromising the connections.
You posted previously and i am having the problem of sputter and die from 55 mph my wires are hanging out of the distributor so suspect this to be the problem my mechanic says to try a new used distributor being the easiest way to cure the problem, already tried another ignition controller with no change...had spark at the coil when it stalled...so i am thinking sensor in distributor since wires are hanging out. I am hoping that will do the trick...