1996 Ford Bronco idle and hesitation

Well I did the test and fuel did come out of the regulator so I went ahead and got one new. After installing it ran rough at first then calmed down and check engine came back on, so I drove it to the auto store. Codes read o2 bank1&2 too rich and maf sensor intermittent. When I was driving it still have the hesitation but not as bad. Got up to 30mph it started hesitating again but not as bad as befor and I also heard a popping sound on passenger side of engine. Got back home checked plugs and there was fluid on the threads of the first and third plug on that side.

Well I cleaned the Maf sensor and its doing better still a lil hesitation on acceleration. But no I havent tested the TPS yet (dont know how) and the coolant level is good with fluid in overflow.
I wish we could talk over the phone so I can explain better

Ok ill try that next and drive it some more to see if it's going to get better. I know I was about to break down and take it to the shop but I don't like shop prices. I'm not a mechanic but I do something's but this had got me stumped. I will do what you said and get back to you.
Haha yes very frustrating. Guys like you are highly appreciated for the work that you guys do and the help that you guys provide.

And I thank you. Ill let you know what happens as soon as I test the tps. It'll be tomorrow it's too cold in Minnesota right now and I don't have access to a garage