Loud grinding noise sounds like something small and hard is getting caught in some kind of rotary. The sound comes from underneath the dishwasher at or near the motor. I screwed the big circular plastic filter on the bottom of the inside of the dishwasher, but found no significant debrie. It did not resolve the problem.

SOURCE: kenmore elite dishwasher making loud buzzing sound when washing

I had the same problem with by Kemore Ultrawash after two years. The motor bearing went bad because the seal went out and dish water got to the bearing. If you are handy, this motor comes out after taking the dishwasher out. I was surprised how easily the motor came apart from the dishwasher, a good design. The motor has three screws that holds it together, I took them out and took the motor apart.
I took the old beaing off the shaft with a grinder, careful not to groove the motor shaft. I did, but just put some high temp silicone caulk in the groove before I put the new bearing on the shaft. I bought a new bearing on the internet, it is a 22mm x 8mm x 7mm. I bought one that went in a small engine, a quality one. I placed it on the shaft, put the motor back together and put the dishwasher back together. It has run quiet and great for many weeks now. I expect the dishwasher may last many years now, because the bearing I took out was a cheap aftermarket one, and the new one is vastly superior in quality.

Good luck and fire away with any questions. I love this dishwasher and am glad I could fix it for 19$ and some of my time.

SOURCE: Kenmore Elite ultra wash dishwasher

When it is off, reach down around the base of the spray assy and run your fingers around the entire circular base where junk can get caught. I've found broken glass and plastic utensils. Why do some of us wash disposable utensils? Huh? You may find something like a piece of plastic, glass, or the like that is making the noise. Be careful not to cut yourself.

If this buzzying sound is not coming from the tub, and is actually below the tub and in front right side, it is most likely the electrical relay switch ( which can make that sound when it is straining or failing).

SOURCE: loud noise near the end of drain cycle model #MDB7100AWQ

On some othersites it was said that the plate on the discharge impeller came loose and was banging on the black metal impeller. When I took mine apart that what mine looked like. I glued mine back with J B WELD, and there is still some noise during rinse. One person said he took it out and the noise went away. The part came be bought for about $15.00 online. Are there any torque specs for these screws?

SOURCE: Loud Humming noise every time we run the dishwasher

Hi, I had this exact same problem. In my situation it turned out to be the pump that pumps out all of the used water. It was rubbing up against the floor so that every time it turned on it made a loud vibrating sound. I just reached under the washer and put a piece of rubber between it and the floor and it solved the problem.

good luck!

I saw this post because I am considering buying the same model you have. Other than the noise problem you have, what do you think of it?

SOURCE: Jenn Aire dishwasher DW861upq leaks

Hi


Thanks for using FixYa. If you have nuisance water leaks around the base of your dishwasher, you may be using a detergent that is causing too much suds. Cut back on the amount of detergent you use, and see if that makes a difference.

Water that spills through the door vent is usually caused by improperly loading dishes. Leaks from the door itself may be caused by a faulty door gasket or door tightness adjustment.

Also make sure the dishwasher is sitting level (you can adjust the front feet up or down, and many units have some type of levelers at the rear).

Water under the dishwasher may be originating from a leaky hose or loose hose connection. Remove the lower front panel, and check the hoses. The pump seal may be defective, too; replacing this is a job for an appliance repairperson.

An older dishwasher may corrode at the bottom, but this is fairly uncommon. If this is the case with your dishwasher, it's time for a new one.

Please do accept the solution if the issue is resolved or else revert for further assistance.

Thanks
Rylee