I'm kicking myself for it right now. If I had a garage, I'm positive I could get both of our cars back up and running. But as it sits, the wife's '04 Altima sits immobile in the driveway with no way to get it to a buddy's garage. Wind chills in the single digits are condusive to 7pm tune-up and diagnostic sessions.
But thanks to computers and the internet, I am actually gaining more confidence in working on my own vehicles. Apparently, all newer vehicles have really simple, metal pieces and really complex computer pieces. The metal pieces tell you they're done with noises. Computer pieces tell you they're done when the car does NOTHING. Going to the auto parts store to buy a code reader today.