Is the oven igniter supposed to shut off in a GE XL44 after it reaches the oven temperature needed?

SOURCE: GE XL44 gas oven

Starfish, remove the oven racks, in back there will be two chrome screws, remove them. Lift the lower oven panel out by pulling up from the rear. Remove the screws holding the flame spreader and remove the flame spreader. Now you will see the burner and igniter attached to it. There are 2 quarter inch hex screws holding the ignitor on. GE likes to put them on an angle where you cant get at them. If you have trouble you can remove the bottom drawer and remove the screws securing the burner to the back wall. There should be one in the front too. The burner will now lift up and you can get at the screws. The new ignitor should come with ceramic wire nuts. Just cut the old igniter, strip the ends of the wires going to it and wire nut the new one on. Reverse the rest of the steps. Here's a little trouble shooting schem. Catriver...post back.

SOURCE: GE Spectra XL Oven does not maintain oven temperature

I have the exact problem. We had the ignitor replaced 2 already and it works for 18 months and stops. Occasionally, it the oven won't even start to heat. I am ready to throw it out.

SOURCE: Oven does not maintain temperature. Part 2

sometimes when they get hot that is when they fail

SOURCE: GE XL44 Oven Temperature Issue

Have you tried replacing the bake ignitor yet?

SOURCE: oven

Same here, my wife freaked cause Christmas turkey took 6hrs.
I read somewhere that its internal thermostat. GE should offer to look into this seemingly wide spread problem