this post was submitted on 13 Jan 2026
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Do you know if Vitamix motor units are relatively easy to repair? We have one that the speed control doesn’t seem to work consistently anymore. Even at low speeds sometimes it’ll randomly rev all the way to max, or if the knob is turned up sometimes it won’t actually speed the motor up. I think the model is VM0102D if that changes things.
We’ve been dealing with it as-is because the overall functionality isn’t terribly impacted, it just needs a little extra monitoring when it’s in use, but if I can fix it it’d be a much better experience.
I've fixed a bunch of things but not that specifically.
I'd try spraying the speed control knob with contact cleaner because it sounds like that might be the problem. (Available at any auto parts store in a spray can). Or use 99% isopropyl if you have that available.
If cleaning the connection doesn't work, you can then replace the whole assembly, the new part runs about $20 incl shipping if you're in the USA.
https://www.ebay.com/itm/326749491891
That's a non genuine 3rd party Comparible part. The genuine one is on Amazon for about $60 but I am not sure if it's 3X as good. Your call.
If I'm not mistaken it would be the 2-wire version but ou might want to look inside and confirm before ordering.
(I'm guessing here, but what I think is happening is that the potentiometer is so dirty it's like a crackily speaker or volume knob that is sometimes cutting out completely. I suspect it's wired so that it goes full speed and the knob steps down the speed. So when it cuts out at the knob the motor defaults to full blast.)