Question about Maytag MDB7100AWB Dishwasher

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Loud noise when I start the dish washer it fills with water and as soon as t starts to run it makes a real loud grinding noise can you tell me what it might be and a rought estimate as to what it might cost to get it fixed. Thanks in advance Jim

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  • pamk810 Jul 01, 2008

    Our Maytag Quietseries 300 started doing this also. Model BTT70AWB. Thought it was the motor, replaced it and it is still doing it. Anyone figured this out yet?

  • ljpaquet1 Oct 26, 2008

    I will like to understand how to access the pump. I unscrew everything inside the dish washer and clean remove all plastic pieces that was there. I also remove the blades and really desassembly until I saw the last shaft. But the noice is still there It's seam to come from under the diswasher. I hear the noice comming from the engine when I turn the shaft.



    Any Idea?

  • angeloc Mar 26, 2009

    my cat runs over and looks under the dishwasher as if something is moving under there. Very loud and starts immediately not during rinse as some folks complain of.

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My Dishwasher had the same loud Grinding Noise.
It was a piece of a plastic fork lodged behind the macerator blade.
This is at the suction to the pump just under the strainer. check this out first before you pull everything apart. You should be able to get to it by taking the lower arm off and pulling the strainer out. Hope this helps.

Posted on Mar 31, 2009

  • ty_h_yancey
    ty_h_yancey Mar 15, 2013

    I followed the person's thinking above, and then went to YouTube to see how I could perform what they did. The video was great, and within 30 minutes I found a piece of metal under everything *about the size of a hearing aid battery". Not at all sure where it came from, but with three boys, anything can happen.... I could not put the machine back together since I started working on it a midnight and it proved harder to get the screws back in that to take it out. I need to purchase a special tool that will fit the screws well. Wishing me (and you) much luck..YouTube info: "Maytag Quiet Series dishwasher noise repair Pt. 2" Author: Robachino

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Ours stopped when we changed from light wash to normal wash. Might be something in the panel associated with the wash cycle. No more clicking...keeping fingers crossed as it has not done it in a couple of months now.

Posted on Oct 28, 2008

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I will like to understand how to access the pump. I unscrew everything inside the dish washer and clean remove all plastic pieces. But the noice is still there It's seam to come from under the diswasher. I hear the noice commung from the engine when I turn the shaft.

Any Idea?

Posted on Oct 26, 2008

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Sounds like something caught in the pump.

Posted on Jul 05, 2008

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1 Answer

Dish water is not working. Water fills but no noice after that.


it's obviously sounds like your pump has gone, but considering the age of the machine, it would probably be best to get a new machine, that way you would have a 5 year warranty with it aswell so it's win/win really!

Jan 05, 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

When washer is started make loud grinding noise


Very likely the bearings in the motor have begun to fail. You can replace the motor, but for a 15 year old DW, sometimes it makes better sense to just buy a new one. Depends on the features the old DW has, vs new, vs motor replacement cost.

Reply back and we can you more.

Dec 13, 2009 | Dishwashers

1 Answer

Doesnt clean dishes, seems to be no water coming into machine


There should be about 2 inches of water in the bottom of the DW.  If it is filling but not washing the pump may be bad.  That might explain the loud noise (motor bearing).  I assume that the detergent cover is opening but no water is being sprayed to dissolve it.

May 31, 2009 | Dishwashers

1 Answer

Loud rattling grinding noise when pump is running, no water enters the machine.


Make sure the water is turned on to the machine, if it is then it sounds like a faulty water fill valve, just replace the fill valve, they can sometimes be cleaned but I would never trust one, they can always stick in the on position later and flood your house. Check to see if the valve is geting 120v ac before replaceing the valve, if it's getting voltage and no water is flowing then the valve is bad. You will need to borrow or buy a multi-meter for this test.

Feb 01, 2009 | Whirlpool Gold 24 in. Built-In Dishwasher...

6 Answers

Loud noise maytag dishwasher quiet series 100


Hi All,


I have had a Maytag Quite Series 300 for some years now and have done basttle with it on may occasions. I now consider myself somewhat of a veteran, although by no means a repair expert!


Grinding Noise: From either a clogged/blocked impeller or not enough water getting to the impeller.
For a clogged impeller, it is fairly easy to disassemble the washer to get at the impeller to remove any debris or blockages.
For not enough water it can be a number of things. First of all, you will notice that the noise lessens if you add a jug or two of extra water. This is because if the water level is too low, the pump impeller will get some air mixed with the water & this is LOUD! Now for the causes:
Float – If the float gets stuck in the wrong position (debris or water deposits), it will not fill enough.
Float Set Wrong – Seems thats some of these dishwashers have the float set a little too low to let the dishwasher perform without grinding. A few pennies attached to the float with a rubber band seems to help here. Don't go too far or you'll flood your kitchen!
Timer – Some folks have mentioned that dishwashers that fill on a timer will not fill enough in the allotted time, if the water pressure is low. While this is true, I have looked over the electrical & parts diagrams for the QS300 and I do not see a timer listed anywhere. Also, the wiring diagram appears to show that this dishwasher only uses the float to achieve the correct water volume. I could be mistaken here.
Note that in VERY hard water areas (like mine – TDS of 850 hardness or 49 Grains), the plastic fins on the cover of the impeller get very choked up with water salts and this can impede flow, leading to a low-water symptom, when in fact, there is plenty of water.


Dishes Not Cleaning:
Poor Water Flow – See above, all the above items will negatively impact dish cleaning.
Poor Q uality Detergent – After trying them all – Yes, all – Do not use cheap detergent. Buy the brand names: Cascade or Electrasol work well. I have found that by far, the little packs work the best. We found that the liquid works second best and the dry stuff really isn't up to the task at all, no matter which brand.
Spray Wands Catching – We found that our lower spray wand was catching on the bottom of lower dish tray, so I very slightly bent down the legs that the wheels mount to in order to lift the dish tray/basket a little and give the wand a little more room. This worked well.
Spray Wand Nut Too Tight – The factory seems to send the dishwasher out with the nut on the bottom spray wand tightened a little too far. Loosening this a little bit lets the bottom wand rotate much more easily.
Top Spray Wand Not Meeting Receptacle – The top spray wand is attached to a pipe that mates with a port (well, one of two ports, depending on if you have the top rack in the “Upper or “Lower” position). The pipe seems to have a tendency of missing the port. A well placed elastic band will help here. Note that on our dishwasher, by the time the first elastic band wore out, the pipe had been permanently moved to the correct position by the gentle pressure.
Tines/Dish Holders On Top Rack Falling Over – The tines (metal spikes) that hold dishes on the top rack fold down by design. Issue here is that they do it sometimes during the wash, causing the dishes to fall over and block the spray. A few well placed rubber bands help here as well.
Water Salt Buildup – If you live in a very hard water area, you can still get clean dishes from yor dishwasher. We do and we have VERY hard water. Buy a gallon of vinegar once a month. Pour this into a clean dishwasher. Turn it on so that it runs for 2 minutes to circulate the vinegar. Open the door & let stand over night. Close door & finish cycle. This will cut down significantly on the hard water salt buildup in the washer.
It's A Maytag – Sorry folks, it's true. I have learned (after purchasing the dishwasher) that Maytag has run into financial difficulty in recent years and has reduced build quality to save money. If you got suckered into buying one of these, you will very likely never buy one again. My opinion is “Do not by Maytag.”


Hope this helps someone!


Dec 31, 2008 | Maytag 24 in. MDB9750AW Dishwasher

1 Answer

Dishes not coming clean


Check to make sure that the drainline is not backed-up or obstructed. If water is draining properly, you may need to reprime your washer. It may have been turned off before being completing its cycle. To Prime, Start the dishwasher and slowly advance the timer, till you hear the water valve open and fill. Let the washer do the rest. If a loud whining noise appears and does not go away after filling, check the motor to make sure it is not locked up. If locked up. Turn washer off and attempt to turn the impellor. Once free, it should be ok

Jul 21, 2008 | Maytag Dishwashers

1 Answer

Dishwasher problems


The washer may be attempting to run dry. Many times on these washers, a person may open the washer and then go to another load. The washer gets stuck with a dry pump until the timer tells water fill valve to open. Easy test. Start on regular cycle ,slowly advance the timer. it will click until you here the fill start and water will fill until.....

Jul 06, 2008 | GE Dishwashers

1 Answer

Maytag dishwasher mdb56000aww


It seems that your motor on the dishwasher is going out, like mine has just done. My explanation is that it sounds like something is grinding on glass or as if a bunch of mice are making noise. Eventually, the motor will not run any more. What will happen is that the dishwasher will fill up, then make a loud humming noise, while the heating element is making the water near the heating element sizzle. Now what you have is a possible fire hazard which compounds the problem with the dishwasher. Get rid of it, take the loss and live like my grandmother used to, without having a dishwasher. That is the best advice I can give you.

May 08, 2008 | Maytag 24 in. MDB5600A Jetclean II...

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