Washer won't cycle through!

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*]The washer fills, washes for a few minutes then cuts out. Their is a horrible buzzing (grinding/racheting?) noise coming from the control knob. Tried a different wash cycle, which again works for a short while before stopping. Don’t want to replace the controller for $100 if thats not what it is.:confused:[/LIST]

Thanks for the help, the link was great I managered to follow the steps without any bother. My only problem is that the coupler is in good working condition. What do I try next??:confused:

Yes could be pump but also could be tub seal… take 2 screws out of lower panel and run unit and look for leak