noise from aerator (sort of long)

[dpage70]

I have a 95 201 pro and the livewell timers are on the bow. there are 2 switches for each livewell. one is off/manual/timed and the other is 2/4/6 with a small red light to indicate that it's running. when I am fishing the livewells will fill up as they are supposed to and after a while it starts making a thumping sound. it's only on the port side and when it's thumping the red light starts flickering and the aerator stops pumping. I honestly can't tell if the sound is coming from the aerator or from the switch up front because you can hear it all over the boat. to me it seems like it would be the switch since the light is flickering but I've never heard a switch make a thumping sound. so I'm lost. anyone else ever has this problem? I put this on the electrical board also but thought I would try here too. thanks for any help.

[JerryT]

Maybe the pump is binding up?? Im guessing you have Atwoods..White cone like pumps..Find the one in question and remove the three philps head screws and pull the motor off and look at the impeller..If found rocks in mine and they have never been run with the screens off by me

[basser201]

I have a 96 201 and the same set-up. If the timer is starting to go out it will do the same thing. Pull the swith panal that has off/manual/timed and the other is 2/4/6 behind that is the timer. It is red and round. I had to replace mine not to long ago.I think I paid $13.00 for it.