My maytag home top loading washing machine over fills with water, ie. the switch to stop filling and start washing doesn't go off. I can drain it by setting it to spin.

Maytag & Whirlpool washer diagnostic - Fills with water then ...

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Troubleshoot your trusty Maytag Washer that has some of the ...washer diagnostic - Fills with water then cycle stops - LAT8014AAE .... Not agitating Maytag 2 belts top load washers - Duration: 26:55. by theapplianceman 23,820 views. 26:55.Washing Machine Keeps Filling With Water and Will Not Agitate ...

Maytag top loading washing machine stopped working & filled with

sounds like you are having a syphoning issue. caused by having the drain hose too far down the home standpipe. very common problem. test..fill the machine, high water level. when it stops filling turn off. advance into spin/drain for just a moment and shut off. listen to hear water still going down the drain.
repair.. raise the drain hose nearer the top of the stand pipe. also do not tape/seal the hose into standpipe. it has to breath. good luck. kihm washing machine drain hose installation Google Search

it sounds like your drain hose is to low it needs to be 3 feet high if its to low this will cause the water to syphon out and keep refilling

Make sure your drain hose to the drain pipe is higher than the water in the tub if not it will keep running and going out the drain.
Also try taking the hose off the level switch and blow in it to be sure it's not stoped up. If is it won't let the level sw cut off. air should go through it. Good luck
When you unpluged the power and it ddn't keep runing the water valve should be ok.

If it fills with water and starts the cycle and the water keeps running in then your water inlet valve on the back where the water supply comes in is sticking. It needs replacing.

WATER DRAINING

since you can drain it
take off the back and watch what happens when u turn it on
i believe you make have a loose drain connection

Sounds like a hose off pressure switch or faulty switch/ however make sure drain connected ok 1st....

Check lid switch. Most will not run with lid open and the switch may not be pressed down when door is closed

Replace your lid switch.

Check to make sure your drain hose has a loop at least as high as washer top.  If the drain hose is not looped higher than tub water will continue to drain and it won't stop filling.  If it doesn'y reach the correct fill level it won't agitate.