[tboyer]

Are you handy enough to work on your car? If yes, then remove the engine cover, disconnect the battery (make sure you have your radio security code) and finally MAF electrical connector (on the J tube behind the air filter box). Connect the battery and start the car, which will drop it into "limp home" mode. Observe whether the car runs better, if yes, it COULD be the MAF. From what I've learned, the MAF has nothing to do with rough or chasing idles. The most common reason for a rough and/or chasing idle is a vacuum leak somewhere. My rough and chasing idle was caused by a small slit in one of the rubber sleeves behind the throttle body. While you're at it, cleaning the throttle body is a good DIY which will help too. Many posts here and on other boards.

To remove the actual MAF you'll need a security Torx bit set available at Sears.