If a top-load washer fills but won't agitate, first confirm it's meant to agitate the way you expect and that the lid switch reads closed. After that, the usual causes are a slipping agitator, a worn drive coupling or belt, or a motor problem.
Safety first: Unplug the washer before you reach into the tub or lift off the agitator cap, and never run it with the lid switch taped or bypassed.
Follow the diagnostic path
Step 1: Does your washer have a tall center agitator?
If yes: Go to Step 2.
If no: Many high-efficiency top-loaders use a low impeller plate that moves clothes with short, slow motions and long pauses, using less water. That can look like "not agitating" when it's working. If the clothes don't move at all during the wash, continue to Step 2.
Step 2: Does the washer recognize the lid as closed?
If yes: Go to Step 3. If it isn't filling in the first place, use our guide to a washer that won't fill instead.
If no: Most top-loaders won't agitate with the lid open, and many lock the lid first. Check for a broken lid strike or something caught in the latch. A faulty lid switch or lock needs a technician.
Step 3: Is the tub packed tight, or holding one large waterlogged item?
If yes: An overloaded tub can keep the agitator from moving. Remove part of the load and try again.
If no: Go to Step 4.
Step 4: Do you hear the motor running while nothing moves?
If yes: The drive between motor and tub has slipped or broken. Depending on the design, that's a belt, a motor coupling (a known wear part on older direct-drive washers built by Whirlpool) or the transmission. Do the quick agitator check in Step 5, then have a technician confirm which drive part failed.
If no: If the agitator moves but clothes barely turn over, go to Step 5. If there's no motor sound at all after it fills, the motor, its control or the wiring is suspect, and a technician should test them.
Step 5: With power off, does the top section of the agitator spin easily in both directions?
If yes: On two-piece agitators, the upper section should grip in one direction. If it spins either way, the small plastic cogs inside (often called agitator dogs) are likely worn. Replacing them means removing the agitator cap and bolt, so follow your manual.
If no: The agitator itself is probably fine; the problem is in the drive.
What your answer points to
| What you found | Most likely cause | DIY or technician |
|---|---|---|
| Gentle motion, low water | Normal impeller design | No action |
| Lid not detected | Lid strike, switch or lock | Technician |
| Packed tub | Overload | DIY |
| Motor runs, no movement | Belt, coupling or transmission | Technician |
| Upper agitator slips both ways | Worn agitator dogs | DIY with the manual or technician |
Stop and call a technician if
- •You hear grinding or a loud bang when it tries to agitate.
- •The motor hums but doesn't turn.
- •There's a burning rubber smell.
Keep it from coming back
- •Load clothes loosely around the agitator.
- •Wash heavy items like rugs with a few lighter pieces.
- •Don't lean on the lid or slam it.
Owen's shop tip: Before anything else, I watch one full wash phase. A lot of newer top-loaders are doing exactly what they were designed to do, just more quietly than the old ones.
For drive or lid problems, call ProFix Boston at (617) 812-1425. We work on many brands, including Whirlpool.