Dryer too hot.

[Cannot Wait!]

So, attempting to be badass, I took apart my Maytag dryer with the help of youtube.  I used my continuity tester which suggested the the thermostat was ok.  I even got out a grill and heated it up to make sure it cut out when too hot - it did.  (All the while thinking youtube must be joking!)  My tester showed that some prongs on the " Multi-Temp Cycling Thermostat with Internal Bias Heater" made it light up but other prongs didn't  so I ordered one.  The new one came and the testing results were the same so I'm guessing that that is not the problem  - or could it be? I asked the lady where I ordered it, if I could install it and run it in the dryer but she said no.  Would they be able to tell if I did?
The dryer gets too hot and doesn't shut off is the problem.  I've cleaned all the vents, etc.
"Parts Select" website says I can return any part for any reason but then it bolded 'state the reason' so now I'm wondering if they won't refund it if I don't have a good enough reason. I have to pay the shipping.  What would be a good enough reason do you think?

Honestly if I'd never heard of MMM, this would be the last thing I would ever attempt! Lol.  I have no clue what I'm doing and have to replay the help videos over and over again to do the simplest things - like taking off the door. 
OTOH, if I hadn't  met MMM, I wouldn't be retired and have the time to deal with my rental's dryer.  😉

[Spork]

I know you said you've cleaned the vents... but double check them.  Clogged vents are a common source of overheating.  Look everywhere... the flex duct, where it goes into the wall, etc.   Also look where it exits the house (on the roof or on the wall).  Often times these have a screen to keep out insects... but the screen turns into a nice structure that your dryer will use to make a paper mache clog out of lint.  I ended up ripping the screen out on mine.   

If your vent is longish (in other words, if it isn't a 4 inch pipe that just goes out a wall) try hooking up a shop vac to it and see if you can suck anything out of it.

[Cannot Wait!]

Yep, did all that!

[Lulee]

Parts Select (http://www.partselect.com/Repair/Dryer/Too-Hot/) says there are TWO thermostats.  Perhaps it’s the other one that is the problem and not the one you replaced?

http://home.howstuffworks.com/dryer1.htm shows a fan in the mix as you would expect.  If that was failing, it would seem to me that could lead to overheating.  Even if the high temp thermostat kicked in, the heating element would put out a bit more heat as it cools down.

As a double check, you can prove to yourself that all your work on the vent cleaning was effective by going outside during a cycle and feeling the airflow to see if it’s adequate.  Having said that, I’ve never tried it on my own dryer as the venting was replaced four years ago and I clean the filter each time the machine stops.  But having read up some to see if I could help and learn something at the same time, I’m a bit worried about clogs on the cage on the outside of the building as well as clots of lint inside the machine skewing its performance.

You sound like a good landlord though.  I’d love it if mine would make even half as much effort.

[Lulee]

http://www.repairclinic.com/RepairHelp/How-To-Fix-A-Dryer/6---/Dryer-overheating does not only backs up my alternate theory about the fan/blower but also talks about problems with the heating element being a cause.  Seems like a useful site.