Replaced pump

[mas985]

That sounds more like the gauge is broken. Does the gauge go to zero when you shut off the pump? Are you getting decent flow out of the returns?

[gohogs1]

I would like to add that when I replaced my motor on the pump that the motors thermal cutout was shutting the motor down after about 10 seconds. The problem turned out to be the timer. Some how the voltage was dropping too low and causing the pump to shut off.