Haha, this is an easy one. Lets just say it'* time to upgrade your coil packs to a nice set of packs from MSD!
I did the exact same thing last fall. I cleaned off my engine and was a little happy with the water. Well, it turned out that my middle coil pack got wet and fried. I had similar problems as what you described. I was getting what seemed to be almost like backfire, a rough idle, stumbling on acceleration, and more. Took it to the shop (thinking I literally blew up the engine internals) and they just replaced a coil pack and everything was back to normal.
I am not sure if the 92'* use the same packs as the 95'* but I do have some spare ones (known good) sitting in my garage right now