what would make the fuel pump keep going out on 1992 Toyota Pickup

have replaced fuel pump several times, new pump lasts about 6 weeks then drops fuel pressure from 90psi to 45psi, have changed filter, runs great with new pump, replaced pump atleast 8 times, what could cause this?

Asked by for the 1992 Toyota Pickup
Check your ground circuit for loose, corroded or broken connections. All the way to the battery.
1 more answer
Assuming you changed the filter have you checked the fuel pressure regulator.If not those maybe its gettingsometypeof power surge is the sleeve clean when u change it?