Thermostat

John for Model Number LE8457W

Answer John, Based on this information, You will want to make sure that the blower wheel is not clogged with lint and if it is clear then you would be looking at a bad cycling thermostat. 

William for Model Number LEM447W

Answer Hello William. Check and make sure you have 240 volts coming to the dryer. Check and make sure the unit is not set to Air Fluff. Also check the heater and thermostats and see if they are good. You can test these with a multi-meter TJMA-DM1. They should read closed for continuity. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html 

Jim H for Model Number AGM659L - [Speed Queen}

Answer Jim, If the igniter glows then fades, but there is no flame or gas released for ignition, it would be an issue in the gas valve coils 279834 or no gas supplied to the dryer or gas valve. Good Luck and Thanks 

David B. for Model Number Amana gas dryer, LGM 549W

Answer Hello David. The thermostat Y61372 has three terminal spades on it. You can't see the one sideways in the picture. Hope this helps.