I have the washer on cold water, but it runs warm, stops, trickles, then comes out warm again, stops, trickles, then warm again ect.On the rinse cycle it will only trickle out.

The water fill valve - The water fill valve is a mechanical and electrical part, the coils on the valve need electricity to mechanically open the valve to allow the water to flow into the washer....myth....the washer pumps water into itself...no, it does not. The fill valve opens and the house water pressure pushes the water into the washing machine.
No cold water or no hot water - The fill valve has two coils, one for the hot water and one for the cold water. It is possible that one of the coils can fail and you loose that filling ability. If the cold water coil quits, the hot will still work and during warm fill you will get hot water only and during a cold fill you will get no water at all. If the hot coils quits, you will still have cold water fill, cold water only on a warm setting and no water on a hot fill setting. You can No cold water or no hot water - The fill valve has two coils, one for the hot water and one for the cold water. It is possible that one of the coils can fail and you loose that filling ability. If the cold water coil quits, the hot will still work and during warm fill you will get hot water only and during a cold fill you will get no water at all. If the hot coils quits, you will still have cold water fill, cold water only on a warm setting and no water on a hot fill setting. You can test a fill valve live for 120 volts, power to a fill valve coil and no fill = a bad fill valve. You can also test the coils for continuity, no continuity = a bad fill valve. Some Maytag washers have a fuse in the fill valve circuit, if this fuse let go the washer will not fill. Fill valves can also from time to time stick open and not stop filling. If you have to shut off the fill valves to stop the water from filling in the washer, you have a bad fill valve and you will have to replace it.

To make this as simple as possible, there is sediment blocking the inlet screen(s). CLEAN the filters just inside the water inlet valve (on machine). Sometimes there are hose washers with screens on them also. These are supposed to be located in the hose connection at the shut-off valves (house plumbing). CLEAN those as well. It's suggested to replace the hose washers whenever you unscrew the hoses from their connection point. That will reduce the chance of leakage. DON'T over-tighten the connection at the plastic valve on the machine as they will "strip out" easily. If this is too hard for you to understand, you shouldn't be attempting the repairs. Hire a professional.