My gals 93 YJ runs like a top when cold and first started. It will run great for hours until I shut it off and try to restart it. Some times (not all of the time) we are experiencing a bucking/jerking worse than a cowboy riding a mad bull, It almost feels like the thing jumps time. Its a 4.0 with fuel injection 5 speed. After the jeep sets and cools for a while she starts and runs again without a problem. The O2 sensor and fuel filter have been replaced a few months ago. Could it be the crankshaft sensor? Thanks in advance for any help/comments. Frank
93 YJ bucking problem
- Thread starter pghpenna
- Start date
Seriously, I had that same problem one time and also ran that "test" , but I did end up replacing the coil and my problem was cured. It wasn't on a Jeep but that's irrelevant. I don't have any other ideas of what to look for, sorry.Snitty, The engine wasn't hot, I didn't want to get burned when removing the coil. I see what your getting at and it makes sense to me. The problem occurs when the jeep is hot so it only makes sense to check the coil when it is hot. I believe I'll take a chance and replace the coil, I guess they can't run more than 40 bucks. I'll let ya know the outcome. Thanks, Frank
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