+2 to check the wiring, go over your solder joints, etc w/ a fine comb... make sure there's no oxidation, etc.
Did you use heat shrinkable tubing when you did the wire splices? If not, you pry should have, especially if you live in a "wet" area.
I seem to remember you saying something about maybe having two plugs in the wrong places b/c they're interchangeable... have you tried swapping them yet?
Those are about the only ideas I have for now, will post if I get something else later...
Other than that, work on it ONE code at a time... don't get overwhelmed by all those codes you're throwing, b/c if you do, you'll waste alot more time standing there sighing about how your car should be running, and you're losing this, or need to have it for that... and bitching is a waste of time