Okay I drove on the highway today for about 45 minutes and the surging got way worse than before. About 70mph, it cuts out pretty badly, and this mind you, is after a new cap, rotor and plugs. The only thing I haven't done is the 02 sensor and the plug wires. Well, and a filter which I am changing tomorrow. Someone mentioned it might be the computer, but the car drove awesome before I swapped everything on the ignition. Even with the rotor not having any dang metal left on it! Now it runs worse than it did before. Any one else have this problem? What's the first place to look? Plug wires? I didn't see them arcing ANYWHERE...but they look original, at 150K miles...