P2173 runs ruff and then idels to high

Well I have code p2173 also it runs ruff and then stumbles and then raises the idle to 1300 on its own so it runs better. Also with the scanner and watching the fuel trims. The fuel trims are all over the place when its running ruff but most of the time its dumping fuel but once it raises the rpms the fuel trims mellow out. First thing I found was a large vaccum leak from the egr tube seal. I repaired that and smoke checked and no more vaccum leaks. Cleared codes and retried and still same thing. Tried a new throttle body cause I already had one lying around and performed the relearned and cleared ecu and still same problem. Checked map sensor and it is working properly and has the updated version already. Has new Pcv valve also probaley not relivant but I threw that in there anyways. So iam kind of stuck at the moment wonderin what can I try or test or do at this point. Somebody suggested the gas pedal but on the wiring diagram I didnt understand how that could make it run bad. I know on chevys it can but its wiring is set up differently then this car. So please Help! Also has codes po710 and c121c also dont know if thats relivent.