Maytag Dishwasher Noisy — What the Sound Means

On a Maytag [dishwasher](/blog/repair-or-replace-dishwasher) the noise type and when it happens point straight at the part. A grinding or crunching during the wash is usually the chopper; a high-pitched whine building to a growl is a wash-motor bearing; a rhythmic knock is a spray arm striking a dish. Some grinding is even normal — Maytag's chopper deliberately macerates food with a low rhythmic crunch — so the first job is to match your sound to the right category before deciding whether anything is wrong.

Noise categories#

Before troubleshooting, identify which noise you have: grinding or crunching during wash (chopper obstruction, worn chopper bearing, or a foreign object in the sump); grinding during drain (debris in the drain pump); a rhythmic knock or thump (a spray arm hitting an item); a high-pitched whine or growl (motor bearing); or a buzz during fill (inlet valve). Naming the sound narrows the causes immediately.

Quick Answer#

Quick answer: Most likely the chopper assembly is obstructed or worn — the blade that macerates food before it reaches the drain — so a grinding or crunching during the wash points here first. A worn wash-motor bearing (a whine that grows to a growl) or a spray arm striking a dish (a rhythmic knock) are the next most common.

Most Likely Causes, Ranked#

Chopper and wash-motor bearing#

The four-blade stainless chopper (part W10083957) spins fast to macerate food before it reaches the drain pump, and when a non-food item — a glass fragment, a bit of bone — enters the chopper zone, you get grinding or crunching during the wash. The main circulation motor drives both the spray-arm water flow and the chopper, so when its bearings fail the sound progresses from a high-pitched whine at startup to a continuous grinding or growling — and a growl paired with a burning smell means the motor is overheating and should be stopped at once.

Spray arms, drain pump, and fill noises#

A rhythmic knocking or thumping during the wash almost always means a spray arm is striking something as it rotates — a tall item in the lower rack, a misaligned upper arm, or a utensil hanging through the basket. The drain pump makes a normal high whir for a minute or two during the mid-cycle and final drains, but a damaged impeller or debris that bypassed the filter turns that into a rattle. A loud buzz during the first minute of fill is the inlet valve solenoid working, and a bang at the start or end of fill is water hammer — a plumbing pressure surge rather than a dishwasher fault.

When noise means urgent repair#

A few sounds warrant stopping immediately: grinding paired with a burning smell is a motor bearing failing with overheating; a loud continuous rattle from beneath is a broken drain-pump impeller circulating fragments that can damage the motor. If your Maytag is simply louder during PowerBlast, that is expected — that cycle runs the motor at higher speed and works the chopper harder.

How to check it yourself#

1. Match the noise to the category — grinding, whine, knock, whir, or buzz.
2. Check the sump and chopper for glass or a foreign object after power-off.
3. Spin the spray arms by hand and reload tall items so they clear.
4. Stop the unit if grinding comes with a burning smell.
5. Clean the filter to prevent debris reaching the drain pump.

DIY or call a pro?#

Clearing the sump, freeing a spray arm, and cleaning the filter are approachable owner tasks that quiet the common noises. A worn chopper assembly, a failing wash-motor bearing, or a damaged drain pump is a repair for a technician working inside the sump and motor. If the grinding or whine continues after you clear the sump, book a diagnostic and we will confirm the part before ordering it.