LG dishwasher(LDF 7810WW) making noise like a four wheeler.

https://www.youtube.com/watch?v=WCKBFHgOadU

The above link will show you how to remove and replace the upper spray bar for cleaning.

I had a problem with my LG dishwasher and there was a small stainless steel impeller that they had to replace to stop the high pitch noise. I think this impeller grinds up any food particles. The tech said if one of the veins bend it causes this issue.

I had the same issue with my LG it has a stainless steel impeller the grinds up the food particles and if one of the veins get slightly bent it causes that problem. The tack took it out straightened it out until the new part arrived and it worked fine. He did return to replace it but I don't think it was needed

Hi

In Australia I have seen similar problems with some recent models of LG dishwashers. Not sure if the ones sold in the US are any different.
One common problem I have seen with LG wash pumps from dishwashers which were sold 2-4 years ago, is that the motor becomes noisy after some time. The replacement motors which I have ordered is a different one and therefore revised as the predesessor was not reliable. The replacement motor has a different mounting bracket as well.
They are fairly cheap, but to change them is very difficult. Best to get a repairer as the machine needs to be thoroughly dismantled to allow you to get to the wash pump.
Ash

MINE IS A LG 3850DD3006A AND YES THE GARBAGE DISPOSER GETS STRAWS AND JUNK IN IT. OR THE SCREEN ON THE TOP IS COVERED WITH MACARONI AND CHEESE. OR TWICE IN 4 YEARS THE MOTOR RING SPLIT AND THE MOTOR STARTED TO GRIND THAT RING TILL IT STOPPED ALLTOGETHER.
WHAT A PEACE OF JUNK!!
I ADMIT THE STRAWS ARE THE USERS FALT!

The sound may generate form inlet Solenoid. It may come from water pump also. Check inlet water flow also for proper pressure.

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!

I believe this is a brand new dishwasher. Please listen carefully to determine of the sound you hear (clunk) is being made inside the dishwasher or is it being made near by. Most times, the problem is that the hot water pipe is baking the noise when the dishwasher closes the water inlet valve ... and the pipe goes "clunk"
I have not had an LG dishwasher make a clunking sound inside itself when the cycle changes. Also, because this dishwasher is so very quiet (well insulated) the pipe banging would be louder than something inside the Dishwasher.
If you have access to the hot water pipe, listen very near it when the cycle changes for the sound. Follow that pipe (hot water) pipe back and insulate it at the point it is banging. (or get a plumber to evaluate and resolve.)
Please get back to me with what you find, OK?
Good Luck!

dishwasher less then 2 months old was really quiet when we purchased now has a loud vibration noise when water is pumping out.

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