Not to sound rude or ignorant, no intention of being either on this forum, but i know what the iat is and this sensor is not in the intake piping, its underneath the intake manifold, and i think it has something to do with vacuum pressure for the fuel system, it has a line attached to it with a yellow fuel tag/sticker on it, long story short, its been fixed, wires were broken off of the plug, and the coolant temp sensor plug was half unplugged throwing all kinds of codes and making it run like crap, all fixed. Thank you for the info and for the diagram of sensors.