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Dishwasher makes very loud noise when running - my guess is pump or motor....only 2 year old - very disappointing. Makes lud sounds at beginning of cycle and then several times during the cycle. How can I tell if it is the pump or motor? Thanks

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Maybe something in pump or bad pump baring

Posted on Sep 30, 2010

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Posted on Jan 02, 2017

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Pool pump makes a loud noise


bad bearings change pump and motor

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I have a year old kitchen aid dishwasher and during fill cycle it makes a thumping noise. The dishwasher every 5 or 10 seconds shuts off fill cycle then turns back on which I think is what's causing...


Drain Pump

If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.


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Circulation Pump

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.


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Drain Impeller

If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.


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Pump and Motor Assembly

If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.


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Wash Impeller

The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.


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Circulation and Drain Pump Motor

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.


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Water Inlet Valve

The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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May 24, 2013 | Dishwashers

1 Answer

As soon as the motor starts up after the dishwasher fills, the motor makes a loud grinding noise that turns into high pitch whining. Water begins leaking from above the pump.


That shows a leaking water seal. Water would run into the motor bearings which then rust and make noise. You probably need the motor / pump kit.

May 20, 2011 | Dishwashers

1 Answer

Very loud noise underneath


The water pump is only held off the flor by a wire tie. It can drop down just enough to begin touching your floor and it makes a bunch of noise. Either put a small piece of rubber or foam, ( old dish sponge) between the pum and floor or tie the pump back up.

No more noise!

Oct 03, 2009 | Frigidaire 24 in. PLD2850 Built-in...

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We mistakenly ran our 2 year old kitchenaid through a cycle


It's possible. A pump like that should never be run dry, especially if it ran dry for an extended period of time. Does the noise go away as more water moves through the system? If not absent then less?

Jul 22, 2009 | Whirlpool GU2400XTP Built-in Dishwasher

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Makes a loud buzzing sound when washing


This buzzing sound can be from a couple things. A lose a lose kick/access panel when the motor and pump is in operation can cause a slight vibrating noise. Try tightening securing the dishwasher and kick/access panel.

Second, (most likely) their can be an obstruction or debris in the water pump. You may see a plastic grid (4" x 6"; filter like) in the right rear of your dishwasher; Try removing the grid (1 or 2 screws 1/4"/cross tip), then use a dry-vac to remove any debris. *

Safety: As a beginning, please remember to perform the repairs with the power-off and ensure you have water in the dishwasher before restarting the water pump cycle (the water-pump can become damaged while dry-spinning and water enters the pump suddenly)

Jan 26, 2009 | Kenmore 24 in. 17482 / 17484 / 17489...

1 Answer

1 week after installation- is very loud


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

Jul 23, 2008 | Frigidaire 24 in. FDB1050RE Built-in...

5 Answers

Dishwasher Making Loud High Pitched Noise.


debris caught iside pump assy is what it sounds like

Feb 24, 2008 | Kenmore 24 in. 17032 Built-in Dishwasher

1 Answer

Dishwasher Making Loud High Pitched Noise.


How deep do you want to get into this?It sounds like the wash pump motor bearings that are worn.You can pull the unit out flip it over and wd40 the bearings in the motor or you can replace the bearings.Try to lube them first.

Feb 23, 2008 | Dishwashers

1 Answer

High Pitched Noise


try washing on hottest cycle it may be the seal in the spray pump somethimes the rinse aid can put a glaze on the seal if that doesnt work you can replace just the front part of the motor( in australia) dont know where you are.

Feb 06, 2008 | Whirlpool 24 in. GU2500 XTP Built-in...

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