It sounds to me like you have a clogged vent to the outside. Pull the dryer away from the wall, about 2 feet, and take the vent hose off the dryer at the wall, and lay it on the side so the air can escape freely, and run a load. It should work. That is why the thermostat keeps cutting it off, there is no air flow. If you need me you can reach me at my web site at ApplianceEducator.com Tom