Possible pump motor bearing failure?

[mas985]

Also, check the pump drain plugs.

[kballard72]

funny thing... 100% of the time I once the sound starts... stop pump... do one simple thing...

so after awhile on high today, skimmers, main, returns, and water feature wide open. It finally started doing it again...

turn pump off, open strainer lid, close strainer lid.... restarted and pressure instantly returned to 20... no chatter and off&running again......

Before removing the lid I turned it off and on to see if the action of off/on does it... no, still chatter... removing and reseating the lid seems to alleviated its troubles consistently at this point... how long varies has gone as long as two hours that I was outside before switching to low... or simply turning off...

I want to say today was about an hour before chattering returned... but still reseat the lid and viola!