rough idle

I'm new to this forum.. But not to the Jeep.. I'm about at my wits end with my 2003 grand Cherokee.. It has the 4.0 in it.. And here is what I'm experiencing.. Keep in mind this is all been within the last three months.. Giving you all the problems in case I missed something.. Battery died in...

I've been dealing with this on and off problem for 7 months now. This is a 2003 WJ 4.0l. I sometimes get a misfire code for cyl 3, after being cleared a month goes by and it shows up on cyl 1. Every morning when it first starts, it's rough like an old ford thats half dead. I give it a litle rev...