Possible TPS problem need help

Hey guys, im new to this forum. but any ways i just had my alternator go out on me yesterday and i replaced it today, now im having issues with idling. when im idling it idles at 200 RPM ive never had this before. i have to keep on the throttle in order for it not to stall out on me. does anyone have advise for me? or any other reason this might be happening? thank you very much

its a 2000 jeep cherokee 4.0

It takes a certain number of key/run cycles sometimes for the PCM to learn the new TPS.

disconnect the battery for 10 minutes. after reconnecting, turn the key to the ON position, wait about 10 seconds then start. all should be good.