Working on the Wagon I might have fixed a couple of things.
First was a small oil leak. A common place to leak was the oil filler tube on the engine where a cheap and easy, my kind of work, o-ring. Two easy to get to bolts and a o-ring seems to have fixed that.
Then the only code causing the CEL (check engine light) to come on was a code of 35. It was the purge solenoid. After reading several articles on this and trying all the "cheap" fixes I decided to take it apart and see what was inside. Take a look
I was told they don't come apart but that never stopped me before. I will have to get back to you on if this fixes it or not. Only time will tell.