Car stalls

i have a 1988 olds cutlass cierra that only has 87k on it I bought it last may and it drove fine for aout a month then one day my wife and i were going down the highway and it start missing and finally died then when it sat for a while it start and ran but once it started to get a little warmed up then it would start missing and dying out again finally it just got to where it would start and then die now i cant even get it to start replaced fuel filter and fuel pump