Would a egr valve make your 1994 Pontiac grand am delay on its acceleration?
yes,if the inner vacuum bladder is cracked it could cause a vacuum leak,this could cause a problem at idle also.
There is a few different things. More then likely you floated a valve from either extreme aggressive driving. Hard acceleration then to completely letting off, and back to hard acceleration. Or another scenario would be like you either hydroplaned while you where accelerating or hit ice and over revved the engine.