I have a submersible water pump, 185 ft, It will not build up enough pressure to turn on limit switch. Replaced limit switch,bladder tank is set with air pressure, turned to 20/40 still won't reach limit. I can hear the pump running at the well head. Never have heard it running outside before.
Some water pressure, it sounds like water is running back in well lines when I turn limit switches to a low number.

Some water pressure, it sounds like water is running back in well lines

That part sounds like a bad checkvalve. The rest of your post, unfortunately, sounds like a pump going bad. How old is the pump?

That part sounds like a bad checkvalve. The rest of your post, unfortunately, sounds like a pump going bad. How old is the pump?

22 year old pump, hard water in the area

That part sounds like a bad checkvalve. The rest of your post, unfortunately, sounds like a pump going bad. How old is the pump?

Yes it is, checkvalue at the well bottom?

Some water pressure, it sounds like water is running back in well lines
Sounds like a leaking or cracked well pipe to me.

Good catch, HK. That could very well be the problem. Still, a 22 year old pump is pretty old. What kind of pipe is your wellpipe, plastic or galvanized?