I recently noticed that my 96 ex stumbles when I give stomp on the gas pedal. I typically drive very conservatively, so this condition may have existed for a while, but I had not noticed it. The car accelerates well with minimal pressure, but when I ask for the car to accelerate quickly it almost seems like the transmission is slipping. Almost like a clutch chatter. This goes away at 2000+ rpm. I only notice it when at a low speed because otherwise it would downshift and be above 2000 rpm. This problem I can live with, but it becomes a safety issue when I occasionally need to get up to speed fast.

I have also had an oxygen sensor code come up very infrequently. I don't think this is related. Another side issue I had was a rough idle, but in the cooler weather, the car seems to be running much better now, even on warm restarts.

I have seen some posting suggesting vacuum leaks or fuel injector issues. I plan on giving the vacuum hoses a good look over tomorrow. Any suggestions would be appreciated.

Thanks again for the always informative answers that are provided here!