Does it do it all the time or only when it's warm? About 6 years ago, My 94 Accord did the same thing as soon as the engine warmed up, but ran fine when it was cold. I tried lots of things, new spark plugs, new wires, etc, and nothing helped. I finally figured out that it was the EGR, which opened to far as soon as the engine warmed up, and then it ran rough. I disconnected the vacum line to it, capped it, and everything has been fine ever since. Yes, the check engine light will come on when the EGR doesn't open like it's supposed to, but who cares? Not me!