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    4.0L Rough Idle - Tried everything... any more ideas?

    Yesterday, picked up a new battery and installed it. Today, the voltage is still acting crazy (see video link above if you havent) So, I went to autozone and had them test the alernator while it was in the Jeep. Below are the readings at 2000 rpms. peak voltage: 13.46 peak amps: 88.6 (They said...
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    4.0L Rough Idle - Tried everything... any more ideas?

    coil over plug design - (i.e. there is a coil rail that sits on top of the plugs).
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    4.0L Rough Idle - Tried everything... any more ideas?

    Ok, more testing - Battery w/ jeep off - 12.2-12.8v Battery During Start - Lowest 5.4v Highest 11.6v Running with accessories off 13.94v Running with lights, AC at full and Radio 11.98-12.82v However, even those these (except for starting) ar all pretty consistant, the volmeter on the dash is...
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    4.0L Rough Idle - Tried everything... any more ideas?

    New problem!!! Today when I went to start the jeep on lunch, it clicked (like the battery was dead) one time, the Trip and overhead milage reset to 0, but the radio stations are still there, and then started. Then once running, the dash voltmeter was doing some super strange things as seen in...
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    4.0L Rough Idle - Tried everything... any more ideas?

    i appologize, I was a little mad at my jeep, and took your resonse out of context. I am not recieving and messages or check engine lights at all.
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    4.0L Rough Idle - Tried everything... any more ideas?

    wow, thanks for being the worlds greatest human spell checker - you were biggest help I have had this year, don't know what I would do without your informative post.
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    4.0L Rough Idle - Tried everything... any more ideas?

    2004 WJ w/ 4.0L and 4x4. I have replaced, plugs, IAC, TPS, Crank Position Sensor, removed and completely cleaned throttle body (with sensors out). I have done an oil change, checked motor mounts and trans mount (they seem to be ok). It runs rough (not to the violently shaking, but rough enough...
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