so i got it running yesterday and it smells like its running rich and i got a cel i got the code for the iacv its surging from 1400 to 1700 it only does it when i am in neutral when i get it in gear it runs not good but it runs. I havent been running it at all cause i want to get the cel fixed i am getting some more codes i am just wondering if the iacv will make more codes go off and what could make it surge like that?