I have had the same problem on my ’03 2.3L. I initially thought it was from rain and my CAI. But after cleaning the top of my valve cover one hot dry day it stumbled the same way. So my guess is its coming from the coil packs, knock sensor, or the wiring harness in that area. If I barely give it gas it won’t do it, but too much throttle and it does.Anyone else having these problems.