poor gas mileage, accelleration, theres been a few times my CEL came on. i need to change my fuel filter, so its probably that. but last week i was farting around in the engine bay, the car was running and i unplugged my maf. the car idled high for a split second then returned to normal idle. in all my experiences when the maf is unplugged the car barely idles. ive experienced bad maf's before, but the car would shut off until i unplugged it then idle fine, but my car idles fine, and during driving doesnt misfire. could the maf just be on the way out?