Replaced my fuel pump & filter...after about

The fuel presure needs checked to make sure that the pressure is the 50-55 that the system wants. if it is OK then the catalist converter in the exhaust or other exhaust restriction is likly. Remove the upsteam oxagen senser and run it their should not be more than 3 PSI pressure at the hole the O/2 sendser was in. Sure it'll run with the O/2 out long enought to test it just leave the wire hooked up. Don't drop the o/2 senser as it's easy to break. if the pressure is high and it may have to be hot to fail the test. But if it tests the same both hot and cold and it's less than 3 PSI your looking somewhere elese.