[eclipsed at 3am]

My cel is on, and the car idles like crap. It stutters a lot, and really struggles. Sometimes, it idles great. Right at 900(where I like it) rpms. But most of the time it will idle super lean and the rpms will bounce up and down between 200 and 1000. Today it was even stalling a couple times. When I drive, it sometimes stutters, it feels like i let off the gas a little bit and then back on. very irritating.

Anyways, point of the story. I went to advanced auto and had them scan it. The printout was maf and throttle position sensor malfunction. Ok, thats fine. So heres my question: Wouldnt it be something like the IAC? or do those two sound right? Also, I think Ive heard around forums or whatever before that sometimes when an engine component, sensor, whatever is bad, it will turn on the cel but the cel will report something else as being bad. Is that true and/or could that be the case here? I know that might sound kinda dumb, but I'm just making absolutely sure before I buy these parts.

Could the maf throw a cel if its hacked?