Oven quit heating and display flashed F-3

I went online to learn what F-3 meant and it said temp sensor malfunction. I ordered the part - it looked the same so I repaced the old one and then the plugs were different. I cut the plug off the old sensor and cobbled together a connection. I powered up the stove and the burners were ok, but the oven appeared dead. about an hour later the alarm went off and it displayed F-1. I figured I needed to order another part, but hit Oven cancel and the display lighted up. I set the clock, heated to 400 and made a tray of cornbread. It seems to work ok, but I need to make a better arrangement. perhaps cut the new part connector off and splice the old connector. I don't like having electrical tape so close to the oven - it will probably melt with much usage. It is working - for now!