Possible fueling issues?

VSS370z

My car was done nearly 3 months ago and haven't experience any problems except for what you mention about the idling surging. Mine always does it when i put on the a/c its start climbing from around 700 rpms like yours to 1500 and sometimes its stay there,other times it goes down around 1200 rpms and happens every time i stop but if i turn the a/c off the rpms goes back down and the car drive just fine but i need to get that fix cause is makes the engine temperature worst.