Changed thottlebody sensor. Still having issues. Does it need to be cleaned?

What is your question?

Changed throttle body 3 months ago. Last week lightning bolt indicater popped up on dash and is now blinking. Car is now stalling and not turning on. Got a diagnostic test last week and no code came up for throttle body.

What makes this problem better or worse?

It's fine when sitting for a couple hours before starting up. Once throttle body indicator pops up car runs like it's stuck in mud

How long has your 2007 Chrysler Sebring had this problem?

3 weeks