Electrical – Top loader washing machine fill valve drips continuously

Are you sure it's not doing exactly what it's supposed to do? It's not supposed to spin during the wash part of the cycle. When it's full of water it's supposed to agitate. I don't have a Whirlpool washer, so I don't know exactly how yours agitates, but usually this means it turns back and forth, a little one way, a little the other. Once the wash part of the cycle is done it should drain, then spin. Then it will refill and go through the same routine to rinse.

Some basic troubleshooting: the water has to be going somewhere. If the water is going in but not staying in, that means it's going out, and if it's not spilling out on the floor, that means it's going out through the drain hose. Can you see water going out the drain hose?

If so, is the outlet of the drain hose lower than the level of the washer's spinning basin? If so, then that's where the water is going. You've turned the whole washing machine into a big water level and one side of the level (the drain hose) allows water to escape, so it's escaping. Solution: raise the outlet of the drain hose somehow.

If the outlet of the drain hose is already higher than the level of the basin and water is still coming out of it, then it sounds like the pump is prematurely pumping the water out for no good reason. Can you hear the sound of the pump? I'll defer to someone who knows more about washing machine repair if this is the case?