Whirlpool Gas Oven will not heat up to desired temperature

Oven/Range/Cooktop Repair
1

Hello,

I have a original builder model Whirlpool Oven that no longer reaches desired temperature. It takes an hour to reach 400 degrees and 45 minutes to reach 350. I already replaced the oven temperature sensor and it did not help.

Any other suggestions?

Thanks
Captjob

2

Igniter is week and can’t always light the oven when it calls for heat.

3

OK thanks. I’ll order another igniter.

Captjob

4

You already replaced the igniter once before?

To test the igniter I would use a clamp on amp meter and see if it’s in range with what is marked on the side of the gas valve.