Oven would not reach temperature and noticed that ignitor was only glowing orange. New ignitor arrived a few days after ordering and well packaged. Easy enough job on my Frigidaire range. Access to the ignitor wiring was through the bottom warming tray. Completely remove the tray and you'll see the wiring in the back. It was a bit of an arm stretch to reach it...but ultimately no big deal. Bottom oven panel had 2 screws in back and removed easily. Then removed flame spread plate to reveal ignitor. My biggest issue was actually moving the ignitor from the flame tube. There are 2 nut screws and one screw was stripped and would not come out. I ended up removing the flame tube (held on by 2 screws) and had to file the screw thread to remove the ignitor casing. After that...new ignitor installed fine...even with one screw.
If not for the stubborn screw this would have been a 30 minute job. And it absolutely fixed the temperature issue. You can do it.