My dryer is a kenmore HE4 about 3 years old. Everything looks fine, except it does not heat up. Checked the exhaust vent and is fine, cheked the heating elements and it looks fine, once I put everything back together the dryer started heating up for awhile, then it went back to cold air. Is there something I missed? Any help is well appreciate it.

Chicoa

Do a load with the vent hose disconnected form the back of the unit and post back with results. Have you tested any of the thermostats? Are all the connections to the thermostats and element snug?