What would cause the eng to shutdown while still moving, mostly when slowing?

What is your question?

Happens maybe once a week, no special conditions. Already replaced fuel filter, air cleaner, and used some spectrum injector cleaner. Would it most likley be the fuel pump, inertia switch (that turns off the fuel supply), or an oxygen sensor? Even read that it could be an electrical connection somewhwere that is bad. EGR sensor, or some other?