turned oven off, pulled oven out from wall, removed back of oven, unscrewed sensor from oven replaced with new sensor, put back on, turned power to oven on, tried oven at 425, my temp. gage and the oven temp matched. a very easy fix.
Replaced the Oven light housing. Unscrewed the two screws that hold the housing in place. Pulled out the housing and disconnected the wire tabs from the light housing tabs. Slid the wire tabs onto the tabs of the new light housing fixture. (Each tab is fitted to the tab in goes on so they can not be mixed up) Pushed the housing fixture back into place and screwed the housing into place.
The door comes off really easily, I just made it difficult by not knowing the trick of rotating the locking lever and lifting, until I almost tolally disassembling the door. The string was to guide the temperature probe throught the back of the new oven. Know that I know the tricks, It would ne an easy job.
I feel like Macho Mom. I called in the repair guy since I was afraid of dealing with the gas. HE repaired one item but could tell I was comfortable fixing things and pointed out that the gasket was brittle and would cause major problems if not replaced. Took longer to order the part than do the repair, don't know what I was afraid of!
First of all, the sensor had the proper ohm reading...at ambient temperatures. I suspected the sensor because it would jump in large degree increments over 200°F. From what I read online, the only other part that would cause this was a faulty circuit board. I opted to try the $20 part first vs. the $200 part. It worked. One screw on the back top of the inside is all that holds the sensor in. Pull the wires out and you will find a quick-disconnect. New part had the same connector (thank you). Thread the wires back through the hole and replace the screw. Works like a champion (verified with an independent thermometer. That is all she wrote. I only wish I purchased two, since they don't last that long... 4 years...or so. I just bought the house built in 2007 and empty for a year... and it took 45 minutes to cook a pizza, and even then the bottom dough was light. A house without an oven is like a hot dog without mustard!