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Head_Unit 11-14-2012 12:23 AM

Why is the dishwasher thunking??!?

It's a GE Profile machine, which is running right now so I can't see the exact model.

Sometime this past year, it started thunking repeatedly as it runs. A couple times, I found "Aha! The rotating water nozzles are hitting something!"

But many times that is not the case at all. I just opened and interrupted it, and spun the top, middle, and bottom water sprayers and looked all around. They hit nothing. I cannot really tell where the sound comes from. At bottom around the base plate it is quite loud, but if I listen up by the vents it could be coming from inside. It is about once every second, more or less.


It is driving me NUTS, it is quite annoying, not just a small ticking.

What the heck could this be?

joecaption 11-14-2012 07:17 AM

Head_Unit 11-16-2012 12:55 AM


Hmm, drain impeller, maybe? Or possible that valve. The other causes, well, the sound is not continuous, it is definitely periodic.

boman47k 11-17-2012 09:16 PM

Definitely check for debri that may be getting knocked around in the pump. If these parts snap together, make sure all are in place and snapped properly.

I found some strange things in one dishwasher I checked out.

Seattle2k 11-19-2012 05:12 PM

Sometimes the water jets will move stuff around.

Head_Unit 11-22-2012 01:32 AM

Had a tech over, he pulled out the baskets. Still thunking. Removing the bottom trim moldings, sounds pretty sure it is coming from the bottom i.e. the motor/pump/etc. He said "don't fix, way too expensive. No panic, you have no leaks."

Maybe I'll have to see if I can find disassembly instructions to clean it out...

boman47k 11-24-2012 08:02 PM

Might google 'free appliance manuals'.

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