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  1. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Unfortunately, nothing has changed. Other than firing it up and taking it for a short drive now and then, it's been sitting. I had to put it on the back burner while I work on more pressing projects. I hope to get back to it soon, I will update here if or when I figure anything out.
  2. Z

    Part Help

    I have the Rampage Frameless soft-top # 109435 that I put on my YJ a couple years ago. I just looked and that looks like the same as mine. Unfortunately, the instructions don't have part numbers so you will probably have to contact Rampage tops directly. Hope this helps...
  3. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    thanks, I've replaced every filter including the one in the tank and inspected the tank while i had it out and all the fuel lines. It was amazingly clean for being over 30 years old, no contaminants in the tank.
  4. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Its defiantly something about what the engine bay gets hot. I will bench test my current coil when I get time (cold and hot) But being that it usually will restart and idle right away I have a feeling that's not the issue. Also, this being the third coil, all different brands from different...
  5. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Hey Ralph, Sorry to hear your having the same pain in the A as me. Although it does make me feel more sane that I'm not the only one with this problem. I haven't been able to do more troubleshooting on mine for the last week but will try to get on it soon. I had some of the same issue I...
  6. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    I have 30 years as in the electrical field, I've seen plenty of bad parts straight out of the box, so I understand it. When I get time, I will bench test the coil and do some spark checks. It has been nothing but yard art for over a year, I'm thinking it might make a nifty section of...
  7. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    have changed the plugs once and checked them a few times, they look fine everytime. Did a compression check cold and hot, pressures were the same. If i remember correctly, i had 3 that matched two 10 psi lower and one 20 psi lower. Removed the valve cover to check, did a visual and poked around...
  8. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    So I had an Accel coil and replaced it (not sure brand) but unless it was bad out of the box it didn't change the problem. fuel pressure is always fine, i have added a gauge to the line to monitor it. I haven't checked spark while its acting up. All the plug wires are new since the problem...
  9. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Sorry for the delay, busy weekend. Replaced the ICM and the problem is not fixed. I have no other ideas, so it sits for now. EDIT to clarify: I installed the Howell FI. I have all manuals and guides. It ran good when I installed it and for about a year or so after. thinking it might have...
  10. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Update. pulled the ICM to inspect and do the Nutter bypass. that's when I found that the Howell FI is wired into the ICM. I forgot that as part of the FI install, you have to remove one pin and replace it with a wire from the Howell harness, which would be why there is no need for the nutter...
  11. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    okay, after researching ICMs I have more questions than answers. I read a lot about the nutter bypass, which I did not do when I removed the old bbd computer and installed the Howell FI kit. It ran good for a year or two after that. I didn't do it since none of the instructions (Howell's or...
  12. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    I checked the tank vent when I had it out replacing the filter. Also, fuel seems to be flowing since when I pinch the return line while it's running horribly the pressure goes up. So, I'm pretty sure it's not vapor locking. I located what I believe is the stock ignition module under the coolant...
  13. Z

    YJ runs fine for 10-20 miles, then hesitates, sputters, and stalls

    Hello, I'm new here. I bought a 89 YJ 4.2l a few years ago. The body and chassis are in great shape (California jeep). the engine on the other hand needed work. I was able to get it running and driving good, until about a year ago. It has progressively gotten worse since then, on to the issue...