1986 Nissan Truck blocked catalytic converter

Converter was blocked, truck died, then restarted drove it home 3 miles, but ran really rough gave it a tune up and other converter but still runs rough, is there such a thing as a crackshafter sensor, and could driving it while converter was plugged cause ALL the sensors to blow. I am unemployed and that is why I am asking for someone to give me some advice so I can fix it without the 98.00 hr. Labor thanks