I just got this jeep 3 weeks ago W/78K miles, the idle is not smooth(not terrible rough). It had bosch +4 platinum in it, replaced with the same, no difference, some said use a regular champion copper. I did that and it actually idled worse, like it had a miss so I put the bosch back in. I cleaned the throttle body and idol control. That seem to help some. The jeep seems to run fine and has good power, engine is in nice condition and clean. I used carb spray to check for vacuum leaks, doesn't seem to be any.
What bothered me is the fact that it idled rougher with the champion plugs and had what sounded like a miss, thats not right. It should idle fine with any copper plug,. then again I never owned a jeep.
So, what could it be when idling? Coil rail/pack? Sensor? Vacuum? I did that trick with turing the key on and of 3 times and there was no code, it said NONE. It seems others are having idle issues with this engine, any help would be appreciated, the jeep is beautiful in and out and I want to get it to idle/run the same.
What bothered me is the fact that it idled rougher with the champion plugs and had what sounded like a miss, thats not right. It should idle fine with any copper plug,. then again I never owned a jeep.
So, what could it be when idling? Coil rail/pack? Sensor? Vacuum? I did that trick with turing the key on and of 3 times and there was no code, it said NONE. It seems others are having idle issues with this engine, any help would be appreciated, the jeep is beautiful in and out and I want to get it to idle/run the same.
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