96 audi a4 2.8l

so about 4 days ago i had a check engine light pop on. showing codes for abs, maf and missfire..well when i first got the car last week i did a tune up. just so i know it has been done and not going off the previous owners word. well anyways. havent fixed the abs control module(still shows abs and brake light) and maf. i erased the codes just to make sure the misfires went away. been driving for 4 days now about 30 miles(freeway) to and from work and the check engine light hasnt gone on. im not complaining im actually surprised and happy..does this seem weird?(sp)

 

if the MAF problem was intermittent then it just hasnt come back yet. when it does come back you want to figure out why its misfiring. its not good to drive around with it doing that.