I have a Maytag Centennial washer, model number MVWC6ESWW, when I start the machine, it immediately starts agitating and adding water simeltaneously. At the end of the cycle, the clothes are soaking wet, it seems like it's starting in the middle of a rinse cycle and ending in the middle of a rinse. I have to use the extra rinse cycle, which I hate because I don't like to waste water, in order to be able to get the clothes "dry" enough to put in the dryer. Please help!!

Does it fill with water to the correct level? The water pressure switch lets the machine fill to a certain level and the stops the water coming in, then the control board should start the agitation.

The first video might help you.

https://www.google.com/search?q=Maytag+Centennial.+It+starts+to+agitate+while+the+water+fills+in+the+beginning+of+the+cycle

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have you looked at pump?

The cold water valve screen in the washer water valve is clogged. You have grit in your water and it will continue to happen until you get a filter system installed on to it.

power? fuse? bad push start button?

I had the same problem kinda. Does it start to agitate before it fills with water? Its supposed to fill with water, agitate, sense the amount of the load, then fill with the correct amount of water. If it agitates right away then you need a water level/ temperature control sensor. I replaced mine and no longer have the problem of wet clothes at the end of the cycle. The part number is w10248240. Look on you tube for a video on how to replace. The one I saw showed how to diagnose the sensor. The part cost about $90 and it took longer for me to get out my tools than replacing the part. This part goes bad by starting the machine then adding more clothes after it starts. You can also try blowing air down the tube from the back of the sensor. It didn't work for me but was suggested and blowing the air didn't cost anything.

The water is probably siphoning out of the tub. Your drain pipe is either too low or the drain hose is down too far into the pipe. Take the drain hose out of the pipe and lift it high. I'll bet your problem goes away

What is the complete model number of the unit?

The water-level switch regulates your washer's fill volume. This switch is usually a diaphragm device with a small, clear tube attached between the switch and the bottom of the washer's outer tub. As the water level in the tub increases, the pressure on the air in the tube increases. When the pressure reaches a certain level, it activates the switch, shuts off the water, and signals the timer to begin the agitate cycle. If the switch is defective, it may prematurely signal the water to shut off. If so, you probably need to replace the water-level switch.

Replace the "water inlet valve" on your machine. If you could post your model number I can point you to the part you need.

You really can't without redesigning the washing machine.