Kitchen Large Electric Appliances - Maytag dryer won't start

My Maytag dryer (MDE9306AYW) won't start. You can here it trying to turn over when you push the start button but it then pops the circuit breaker.
I am guessing that the motor is bad but I am not sure. The drum does seem difficult to turn by hand.
When the dryer does actually start, I have had a problem with the dryer not turning off. It will turn off fine when using the timer, but not when using the moisture control side. I am again guessing that it is the moisture sensor. I would appreciate any help and guidance.

You might have 2 problems at once. The start problem may be from a bind in the dryer, if you are lucky. You should disconnect the belt from the idler pulley (it's a belt tensioner pulley) and try to turn the drum by hand. Also run motor with belt disconnected to see if breaker trips then. Idler pulley roller needs to spin free, by hand, as should any rear roller(if you have those) as should the motor shaft itself.

Regarding your auto-dry cycle not advancing may be from a bad resistor mounted next to most timers up in the control panel. These things I think have a resitance of somewheres aroudn 3000-4000 ohms, just to give you some idea. On some of the wiring diagrams shown in the control panel, it will actually say what the resistance is. When ohms testing the resistance, be sure to remove at least one of the wires on it.

It is also possible that if your dryer is not getting hot enough inside, for whatever reason (bad element or from unwanted fresh air infiltration before the heating element), that if the operating stat never shuts off, the timer may not advance in that cylce also.