Hesitation/near stalling at idle and 1st gear

[FloridaCherokee1988]

So my Jeep has begin idling very low, like 400-500 rpm's and it spits and sputters when I press the throttle. Anything under about 1500 rpm's and it starts to miss and stutter. It doesn't feel like a spark miss but more like a fuel problem like she's starving. I replaced the fuel filter and fuel pressure regulator but it didn't fix the problem. Also it only does this after it has warmed up for a few minutes. When the engine is nice and cool in the mornings it runs fine. Has anybody else had a similar problem and found the solution? Thanks guys!
-Florida Cherokee

 

[abarmore]

I had the same exact problem on my 98 model and it ended up being the very first o2 sensor right out of the exhaust manifold I don't knw if yours has that but if it does unplug it while it is running bad n it will clear up or stay the same if it clears up that is ur problem. Hope this helps

 

[Bounty__Hunter]

Might need to remove and clean the throttle body.