Sorry about those robot inquiries, they can be confusing.
What igniter part number did you replace?
You should get a clamp-on ampmeter and read the amp draw when the oven gas valve is on at one leads coming off the igniter. The valve has a label on it saying what current draw it needs to open.
Also, what you need to do is determine if the valve is turning off on it's own accord meaning the power is on the valve and it is turning the gas off or the control is turning the power off.
If it is the latter, then you have to address the control system, either the Electronic Range Control (Clock) or the temp probe inside the oven. Looks like a metal pencil sticking out from the oven wall on the back. You need to access the plug and measure the resistance to be around 1100-1150 at room temp.
If there is anything else I can help you with today or just an additional question about your issue, just let me know.
I thought I would add, that many people think the deposit payment they placed at the sign-up is sent to me after I answer your questions. It is not. It is held by JA until you give me a positive rating and then Just Answer, credits me for the time working with you.
Answering your questions is how I make my living and "No rating" = No compensation for my time.
I am sure you appreciate my efforts on your behalf,and all I ask it that you take a few moments to "Accept" my answer and rate my efforts with 3-5 Stars on your screen, so I can close your question and proceed to help others that are waiting.
Bonuses are always appreciated, but never required
Thank you so very much again for allowing me to help you out today!