Well I've got a problem that has been around for the last week or so. Its a 98 4.0. Randomly my jeep will loose power and regain it very quickly causing my jeep to "hop" at low speeds, keep in mind its a manual. When it does this I generally pull off to the shoulder. My jeep idle will go down to about 400 rpm and get rough, sometimes it will die, sometimes it will regain to about 900-1000. The problem comes and goes but seems to have gotten worse. Only had the jeep for a week.
The check engine light was on for the 2nd o2 sensor, replaced it, cleared code, problem still persists. I'm afraid its a fuel pump, hopefully not.
Any thoughts? Thanks