My 2000 sport (4.0L) Is idling pretty rough now that the cold finally hit michigan. I have replaced the tps during the summer and cleaned out the throttle body, and I have also replaced both of the O2 sensors. Not sure why its happening. Sometimes when I start it up, it will idle fine for a short while then revert back to the 200rpm/gasping for breath. Any help would be greatly appreciated!

Brandon

 

Did you clean out your idle air controller? Might've time for a new one.

 

^ What he said.