How to Troubleshoot Temperature Issues in Whirlpool AccuBake Oven Model #WFG374LVS?

It sounds like you're dealing with a frustrating issue where your oven heats up to the set temperature but then struggles to maintain it. The fact that it keeps trying to ignite after lighting suggests there may be a problem with the oven igniter, the oven control board, or the oven safety valve. Even if the igniter is glowing, it might not be strong enough to open the gas valve. If the igniter glows for more than 90 seconds without igniting the gas flame, that’s a sign it may need to be replaced. The oven control board is another potential culprit; it controls the power to the bake and broil circuits based on your settings and sensor input. If it’s malfunctioning, it might not send the necessary voltage to the heating components. Unfortunately, the control board usually can’t be tested and would need to be replaced if defective. The oven safety valve works alongside the igniter to provide gas to the burner. While it’s less common for this part to fail, it’s still a possibility. However, the igniter is typically the first part to check, as it’s often the root cause of these types of issues. You mentioned you have some experience with older ovens, which is great. Start by checking the oven igniter, as that’s likely where the problem lies. If you have the tools and feel comfortable, you can test or replace it. Keep in mind that there isn’t a specific sensor that indicates when the oven is lit, so focusing on the igniter and the other components I mentioned should help you narrow down the issue.