Can someone please help me i have a 96 ford explorer with the 4.0 v6 ohv and when i push the gas pedal to the floor it bogs down and doesn't really wanna move. In park it revs up smooth. Ive replaced the Fuel filter, air filter, and spark plugs and its still doing it..Ive even removed the cat and check that for clogs and its perfectly fine and still bogging down someone please help me.

often a bad maf sensor does that, or a weak fuel pump which you can pressure test, or clogged up fuel injectors. Good luck