sounds like an engine problem, to help you out lets trade for awhile
I25 through castle rock is pretty solid ice in spots tonight, glad you made it safe.
frank............
I'm glad that you have the " fluke" probs...maybe i wont get them or you can help me when they occur....you are the xj doctor!
dbswede
l had simerlier problem on mine,(99,4.0)one time up at spring creek,turned out rear o2 sensor grounded out and blew a mini fuse,and caused a lot of chugging, but not constant.hope it helps