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-   -   TJ rough idle, need some help! (

arnoldosu1 06-28-2013 08:41 PM

TJ rough idle, need some help!
I have in the past couple months been having issues upon starting my tj. It starts fine every time: It's only once I start that I have rough idling. If I'm pressing on the accelerator it doesn't seem to be an issue. Also once I start driving it, the engine starts to cut out almost, in which case I have to depress the clutch and rev the engine some. Once I start driving it really isn't an issue anymore except on occasion when at a complete stop...or if I turn off the car for even like 10 min or so. And now recently my car appears to be leaking oil, but I have not added any oil as it appears to have plenty in the tank also I have plenty of oil pressure...I do have a little over the recommended full line btw and pressure is over half on the gauge.

I have seen similar things on this forum but nothing exact that had been resolved, so I apologize if there is a thread with this exact issue and the solution. Thanks, I just joined today in hopes that someone on here could help!

arnoldosu1 06-29-2013 05:25 PM

Anyone? No wires/cables, feel/look loose in the engine compartment...Is there anyone who knows what this could be? I'm about to have to take it to a repair is my daily driver and I can't just start guessing what the issue may be. Thanks in advance.

GilaMtnJeep 06-29-2013 09:35 PM

Miles? Tune up last done? Any codes? Need a little more info.

arnoldosu1 06-30-2013 06:38 PM

It has 95,xxx miles on it. I changed my oil 94,xxx with royal purple and k&n oil filter. I changed the spark plugs and wires with performance plugs and wires 25,000 miles ago I think (can't remember what brands but they are both very nice; no miss fires). Also no codes, which is why I am puzzled haha. I was thinking it must be some kind of sensor because it runs well when it isn't acting up. But it also leaks a little oil. Any ideas...hopefully thats a good amount of information. thanks!

arnoldosu1 07-01-2013 01:20 PM

Well I'm still unsure what it is...but I am going to run fuel injector cleaner (lucas) to see if maybe that could solve it. I have never used fuel injector cleaner with this car for the 45,000ish miles I've put on it. Maybe it will be that simple. Though I still don't get the oil leaking part of it...incase anyone cares I will post back on here what the result is.

bmxboy809 07-10-2013 12:01 PM

did you ever figure it out? I am having the same surging/idle/misfire problem on my TJ. No oil leak for me tho

arnoldosu1 09-03-2013 02:49 PM


Originally Posted by bmxboy809 (Post 15662268)
did you ever figure it out? I am having the same surging/idle/misfire problem on my TJ. No oil leak for me tho

I have not figured it out. The fuel injector cleaner did nothing for me. I have been meaning to get it back to my mechanic to see what else it could be...I'm thinking some sort of sensor (throttle position sensor, idle control, or something)...because all I have to do is rev the engine several times and it begins to run properly; though sometimes better than others.

Also sorry for not responding for so long, I didn't get much of a response on here to begin with and I never received any email notification or anything from your response. Have you maybe found a solution to your problem?

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