My name is Peter. I am a retired field service appliance technician.
I recently repaired a oven that would be off as much as 200 degrees. The normal operation of your oven is to rise 20-40 degrees above set temperature and shut down until it drops 20-40 degrees below set temperature, turns back on and repeats the cycle again.
Generally, there are only three components that control your oven temperature:
1.) The Heating Element - If you are getting heat your heating element may be good. To be on the safe side inspect the two connections on the back wall to ensure they are not corroded.
2.) The Thermocouple - There are several different thermocouples depending on your model and if your have gas or electric. These are easily replaced.
3.) Oven Control - Here again there are several different controls, both mechanical or digital.
I just purchased a oven thermocouple and a reconditioned digital control over the internet for under $75.00.
IF YOU HAVE A DITIGAL CONTROL - GROUND YOURSELF BY TOUCHING BARE METAL. STATIC ELECTRICITY WILL KNOCK OUT A BOARD.
So, go into the following website put in your model number and select parts. Several diagrams with part numbers will appear. Your model number is on a metal plate on the face of your oven after you open the door.
Fine your thermocouple and oven control. Copy these part numbers and search the internet for best price.
First, replace the thermocouple. If this solves your problem then return the control for credit if not install the oven control. The highest probably is you have a bad thermocouple
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