My girlfriend has a 2003 mitsubishi galant and I can't keep it running. It sounds like it's sucking in way to much air. I found, on the front of the Throttle Body (looking straight in on engine bay) a hole where I can hear and feel the air being pulled in. I do not know what goes there... I think it may have been just a cover plate, because if I plug the hole with a rag the car starts and runs normal. I was just hoping someone could confirm this for me?

 

Could be a vacuum hose from somewhere is missing