Answer Hello Joe. If the heat stops during the cool down cycle, then that is normal. If it stops during the normal cycle, then the timer may be bad and need to be replaced. You can test this with a multi-meter TJMA-DMT3. 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 Read More... Answered by AppliancePartsPros.com | Thursday, January 29, 2015