do mazda 1996 have inertia cutoff switch or not, because if not wont even check

What is your question?

my mazda 96 b2300 (smallest one)standard transmition stoped while driving it and turns over but wont start, for about 2 weeks before that,everytime i stoped on traffic lights it would start failing like if it really wanted to turn off but never did, and then, suddenly while drive at about 50 miles an hour, the truck turned off so a mechanic changed float (was not working working for ages) with its fuel pump and the main line that goes to the tank wich was leaking, so he though that could be it...guess what?, up to today still can't make it run. Any experienced thought will be more then welcome, thank you so far.