Strange noise when using the dishwasher

The motor is going out. this is a warranted part, so call for service and just pay the labor

check to see if the load noise is coming from the motor that is attached to the sump if it is replace the motor and sump together as one unit if you buy them seperatly youll end up paying almost twice as much for the single pieces take off the bottom panel to inspect where the loud noise is coming from

Could be a bearing on the motor. Expensive

yes.. keep going deeper you will most likely find what is blocking the chopper from turning.

Hey, consider the float assembly!

We bought this dishwasher and ran it for the last 1 1/2 months and it made a grinding and whistling sound from day one (it's supposed to be nearly silent in its operation). Turns out the drain pump was cutting in while the machine was still filling, thereby emptying the wash tub of any water. Then, when the cycle proceeded to wash, the dumb thing had no water and made a horrible noise. So I had to pitch in at least 2-3 litres of hot water, and then it worked quietly! Had to do this every time there was new water intake.

After working with the repairmen - four visits later, we isolated the float assembly as the problem and they set about replacing the part. Turns out the two parts were markedly different. LG HAD INSTALLED an older model float assembly at the factory and it was the problem. The replacement part was the correct float assembly and things worked perfectly after that - thank goodness. No more babysitting the dishwasher.

Don't let anyone tell you the motor assembly needs replacement. I have seen that cop-out 'fix' all over the web. But use deductive reasoning to find out where the problem is in the cycle, and explore this option first - it's a quicker and cheaper fix than replacing the whole motor assembly.

'Mr. Float' as he is now called works like this:
-expels any residual water in the tub from the last wash
-intakes water for the wash or rinse
-whirs 2-3 times prepping for the cycle
-begins to wash, quietly
-expels at the end of the wash or rinse.

He used to:
-expel residual water
-intake new water for wash or rinse
---drain pump would cut in WHILE still filling
-machine would whir once, realize it didn't have enough water
-perform a brief top-up intake shot
-begin to wash and whistle and GRIND (this is where I would have to add the water)
-expels water from wash or rinse, and start all over again.

It's a good dishwasher and it will work, but the right model parts have to be in place!

Dishwasher noise is such a pain, especially in a new kitchen that you need to leave just to have a conversation.

There is nothing to be done to make the dishwasher quieter. Upgrading is the way to go. I now own the amazingly quiet LG LDF8812ST which works well for me and is EnergyStar rated. I really did not know the dishwasher was running, and visitors often comment on how quiet it is as we chat around the kitchen table.

But it takes time to get used to a water and energy conserving dishwasher. You need to make sure the arms are not blocked with each load and not use ultra-cheap detergent powder. Also, the plastic items will not dry like the older dishwasher.

Good Luck!

your model probably has a coating of a black tar-like substance on the inside of the inner door, which, by design, reduces noise. However, LG failed to notice the corrosive properties of the black tar-like layer. Your wiring harness is probably corroded by the soundproofing, and you will need a new inner door, wiring harness, and circuit board. LG extended my parts warranty because they know it's their fault, Call them at 1-800-243-0000. They will recommend an LG warranty repair certified technician in your area to come out and confirm this. They probably won't extend the warranty until after the tech checks out ur unit. However, labor will be your responsibility.

I had the same problem where rubber gasket that seals the motor bearings leaked water into the bearing and rusted out the bearing.

I scrapped the motor into every little pieces and extracted the bearing and just replace it. Now it is quiet as a mouse.

You need a bearing puller to get the bearing out for about $20 and the bearing is $6.
During the repair i slightly bent the shaft and i didn't straightened it properly so it wobbles a bit. But it works and if really quiet.

Me to....My dishwasher is about 7 months old. It use to be extremely quiet. Now it is LOUD. but still works fine. HELP!