I traded in my sport trac for one, 2005 loaded w/cvt trans. I love the all wheel drive, the ride is good, not great. fuel mileage is not bad @ 21-23mpg. I do miss the trac though.
Heather, here is some info that might help. If it does not show in this thread, it's in my library.
tracnyak
http://www.zjstech.net/~library/11566/obdII codes.htm
Just make sure that when you add air that it is filtered so that no moisture gets in the tire, otherwise you will have problems.We quit use it because we couldn;t control the moisture.other than that it is good stuff.
tracnyak
other than normal wrenches to remove the driveline and yoke you will need a seal puller and possibly a seal installer, most auto parts stores will rent or loan tools for the job now days.
Good Luck!
tracnyak