I had autozone check the code a few months back, I don't remember the exact code, but it was something MAF related. I drove the car around earlier doing a few more things and I noticed that it didn't do the erratic idle at stop lights or when accelerating, but it is still jumping up and down if I let off of the gas pedal when driving, typically jumping from about 1000 to 1300 when usually it would drop to just idle (about 800 I believe). But then again, it doesn't always do the RPM jumping so I'll have to keep an eye on it and keep ya'll updated. Anybody else have an idea?