Why is my car stalling and not going anywhere

Coils

I would say definitely fuel relay because the ECU has to tell the relay to continue bringing gas to the injector s. If not relay then filter. Filter is the hardest to deal with so change relay first. For a Nissan that old I'd go pull one out of a junk yard. Good luck

I would assume your Check engine light is on. Scan for the codes instead of guessing and throwing parts at your car.