What could cause ear pain to come and go? it can come on suddenly, be enormously painful to touch and go into jaw sometimes have a sore throat with it can go within seconds or last hours. has been reoccurring on and off for months now?

It is not feasible to provide a meaningful opinion without additional history, physical examination and may be some tests. It would be prudent to see a doctor, preferably an ENT doctor. Wish you good health!

There are a lot of reasons for ear pain as you describe. Ear pain as you describe could be coming from the jaw joint or jaw muscles. I could be an ear infection, although that would likely be more constant. You would also have some hearing issues, most likely. Best to have this evaluated by an ENT specialist you can do an exam and help you sort this out.