Jumpy idle

i have a 99 GA with the 2.4L. while idling anywhere, the car will start acting like it wants to stall and shake really bad. it will smooth out after a few seconds and run fine, then it'll do it again. i have new plugs and wires and also new iac. any ideas on what could be happening? no codes present. 114,000 miles also thanks

Possibly a clogged injector... have you tried any fuel system cleaners ??

A can of Seafoam might clear it up.
... or a profetional fuel system cleaning done by a shop or stealership. Price varies, $75-300.

Also what type of plugs ?

i was maybe thinking injectors, its been awhile since ive ran any. im using autolite platinums. pry should be using ac delco but atleast not bosch

I ran bosch platinum 4x in my 95 quad, it loved them. As for the jumpy idle, check for vacuum leaks.