Hi,
I have a 98TJ 4.0L with 5 speed. 97,000 miles
I have an intermittant problem the engine. It only happens on occasion (maybe once a week) and ONLY after 30+ minutes of sustained highway speeds. The engine will sudenly begin to stutter, and keeping the foot in the gas will just drop the revs faster. I just have to press in the clutch and coast to the side of the road. Once off the road, it will idle smooth as silk, no danger of stalling, and if I sit there idleing for just a minute or two I can continue with no problem.
I had a similar problem a couple of years ago and finally tracked it down to a bad Crank Position sensor. Since this problem was so similar, I went ahead and put a new CPS in but the problem still remains. I thought it might be bad gas, but several tanks from differant locations and a couple of bottles of fuel system cleaner have not fixed it. Although I would think that bad gas or a clogged filter would give a more consistant, and sustained symptom. Any other ideas??
Thanks for your help.
Kelly
98TJ 2" suspension 1" body truetrak in dana 35 32" Super Swampers