Surging Water Pressure
I didn't have the surging water pump issue until I installed a new showerhead, today. The one that came with my trailer seemed to dribble, even when the taps were wide open and the pump running full blast. I put the Oxygenics in today and now I get the surge.
Basically, the new shower head uses less water than the old dribbler, so the pump doesn't need to run as much. Even using less water, the new head feels like it has more pressure. To make it stop surging you have to make the pump run full time. To do that, you need more water demand. When I turned the sink on very slightly at the same time as the shower, the surging stopped.
2014 Flagstaff V-Lite 30WTBS
2008 Surveyor SV-234 (SOLD, but not forgotten)
2008 Nissan Titan Pro-4x crew cab