So I am guessing that it cycles properly when you turn the faucets on and off.
Is the problem when you are continually running the water (like taking a shower) the pump slows down and stops ?
I would check the sediment strainer that is on the inlet side of the pump.
Next check the ground connection along with all the electrical connections.
Gene & Ginger
1997 Jayco Eagle 8
04 Winnebago Adventurer 33V, 05 Jayco 23B, 02 Coleman Cheyenne