I have a Pentair Whisperflo WFE-3 3/4HP Pump that seems to no longer turn on by itself. I will come in when it should be running, check on it, and I can smell a very hot smell, if I touch the pump the housing is hot enough to burn me. I then have to cut the breaker, come by, and get a wrench to manually turn the nut on the end. Once I do that and I turn it back on it runs without issue. I checked the capacitor with a volt meter and it seems to be registering that it is okay.
There also seems to be some major corrosion in the middle of it that just flakes away like powder. It is a 230V pump.