Maytag Atlantis Dryer won't shut off

I ordered a new timer for my Maytag Atlantis gas dryer, model mdg7460awq, because it would no longer turn on when the timer knob was pulled out. Other than that, it was running fine at the time. I installed the new timer and it would not shut off, whether it was in timed mode or the dampness detection mode. I called in and a new timer was sent to me. That timer is doing the same thing, it won’t shut off in either mode. It dries fine, but it will run until manually stopped. Is there something else wrong or do I have another bad timer?
And the vent is clear, I checked that again last night.

Hello TJ. It sounds like the door switch [PART][COLOR=#0000ff]AP4319999[/COLOR][/PART]has gone bad,if when you open the door the unit keeps running, this is a sure signof a bad door switch. Thank you and good luck!