Question about Whirlpool 24 in. DU900PCD Built-in Dishwasher

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Dishwasher Making Loud High Pitched Noise.

Dishwasher Worked Fine For Many Months. Really Quiet. Started Making Loud High Pitched Noise When Running. It Still Runs Good And Cleans. But, The Noise Is Very Noticable.

Same, loud high-pitched whining during wash cycle. 2 yr old Whirlpool.

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  • charlieohio Mar 10, 2008

    Our Whirlpool DU890SWLUO makes a high pitched noise as well. It happens after the wash cycle and at the end of the rinse cycle, too. Our dishes are not getting as clean as before, however. A strange white film (like soap residue) now covers the dishes and the inside of the dishwasher. The rinse tower is working and all the spray holes are clear.

  • huggy_01 Jul 26, 2008

    My Kenmore dishwasher makes a loud high pitched whine when running and stops during the rinse and pumpout.

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  • 11 Answers

A loud high pitch whine while running the dishwasher means that there is something caught in the chopper assembly. To get to the chopper assembly you need to take the racks out and take the pump apart from the inside of the dishwasher. The chopper assembly looks like a metal grate with holes in it. And it might not even be stuck in the grate but somewhere in the pump area due to the water being pumped out, so the best idea is to take the whole thing apart and clean everywhere. However I do not recommend doing this unless you are completely certain you will remember where the screws and gaskets go, otherwise you risk damaging your pump or house from a leak or improper installation. You have been warned.

Posted on Jan 15, 2009

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bigg t
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SOURCE: 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.

Posted on Feb 24, 2008

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