1991 Ford Bronco XLT 302/E4OD
So I pulled my codes this morning, I did both engine off and engine running. The codes I have are 172, 173, 213, 327, 328, 332, and 334. I know what most of them mean I'm just trying to figure out where to start troubleshooting. The truck runs fine, idles a little high at times but doesn't miss or run rough. It has been running rich. Known issues I have right now is my PCV is bad, I've got a new one already just have to find time to do it. Could probably replace all my vacuum lines while I'm at it. Lastly my air injection tube at the cat is rusted off so it's not currently attached, will be replacing it soon.