SteppJL
Member
@JeepCares I wouldn’t mind sacrificing a few MPGs for a proper tuneLike Ive post on a different thread. @JeepCares Please let FCA know about the issue, this problem is all about the AIR/FUEL RATIO, the engine is running too lean that's why when the engine heats up to normal operating temperatures (between 200-220 degree) the lean mixture burns faster than it should at low rpms cause not enough fuel is getting into the cylinders. The air/fuel ratio mixtures has to be updated to a little richer ratio mixture and the problem will be solved, but JL Owners we will have to sacrifice a bit of mpg.
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