We have an old whirlpool deluxe washing machine. It had a leaky water pump, but otherwise worked fine. I decided to replace the water pump this week and bought the part. Its a very simple install. The problem I am having is that once installed, I run a test cycle and the spin cycle actually destroys the new water pump. It burns out the seal, and melts the plastic of the water wheel inside. I Bought the first pump on amazon. The second one I bought from an appliance repair shop an hour away.(Cost 4x as much as the one from amazon!) The same thing happened to the OEM pump. I called the appliance repair shop, and they said they'd never heard of that happening before. They wanted to send a tech. At this point my wife wants a new machine, as the repair will cost more than the old machine is worth...But I'm stumped and aggravated..I want to know why such an easy fix is making me look like a buffoon. anyone have any idea what is happening here??

MJCARB can you please give us the model number of your machine? With that info we may be able to find an answer for you. There are several type of drain pump systems.

Hammonds, your issue may different than their problem depending on the model and type of drain pump system. Can you tell us does the pump get hot right away? How long does the drain pump run for? Does it pump out all of the water right away?

Now for you Hammonds. As you can see the pump on his older top load direct drive is a completely different critter than your duet, which has a separate pump and motor from the drive system.
Perhaps you could start a new thread with your issue and we can further diagnose it.