I have a 1998 manual Cherokee Sport that is stalling on long-distance trips. After an hour-plus of highway driving (70-75 mph), it will decelerate to the point where I have to pull off the highway. When it happened a couple months ago, I just cut off the engine, re-started and went on my way with no more problems. Thinking it was an exception, I didn't have it checked out. Yesterday, it happened again. This time, I tried to re-start and get going and it just stalled out. After sitting for five minutes, I was able to re-start and get back on the road for another hour w/out any more problems. Anyone else experienced this? Thoughts/suggestions? Thanks in advance.