There was no check engine light, but then I plugged in an AutoZone diagnostics device. It read low input from the MAF. The MAF is plugged in. I then saw that there is a sensor plug, but no sensor to plug in to. Does anybody have any idea where this goes?
https://drive.google.com/file/d/0B50...it?usp=sharing

Unfortunatly, I don't have the tools to check fuel pressure. I would rather not get the equipment just yet.