Vs calais 1995 3.8 v6 ecotec problems

[Raymonddan]

When driving between 0-50 driving nearly perfect until u give it some gas it Ethier starts puttering or it starts moving but not as it should an very high revs or it just turns off with the lights on the dash and then takes a couple of turns to kick back over it also feels as if it wants to go but something is stopping it . To my knowledge water pump has been changed spark plugs new radiator also got it scanned and came up with 1 thing mass air intake sensor changed that but all still the same any help please as this my 1st comme

 

[MasterC]

Not a mechanic but miss my vs. I similar to that 2 times. One was the belt was slipping and the other was a gasket leak