Jus had clutch replaced gmpp from crateenginedepot.com. normal driving feels great grabs really good. When I drive in first slowly n put it in neutral like stop n go traffic, my rpms float up and down. Stalled out today it was so bad. Usually tho 500-1500rpms. Sometimes more n sometimes even less. Is this normal break in or has anyone had this problem? Thanks.

 

Clean your throttle body.

 

why do so many people say clean ur throttle body, I looked at mine after 90 k kms and there was nothing to clean at all. it looked like new pretty much. I highly doubt throttle body has anything to do with this or most issues, especially if it didn't do it before the clutch install. then obviously its not the throttle body but something to do with the clutch

 

Because exactly what you described is the throttle body.
2.0L LSJ Performance Tech - Cobalt SS Network

Take it off and clean it properly and report back. Trust me you'll get lots of dirt off you may have not noticed.

 

I always clean mine every oil change just for good measure. Seems to run the same either way tho. Just saying