Kenmore Oven/Range 362.7361893 Not keeping temp

[PiecesParts]

Our old kenmore oven is not maintaining temperature. Indicates its at 400°, but really 20 - 30 degrees lower.
Help me troubleshoot it before my wife foodpoisons us with undercooked pork!   ;-)
Model# 

362.7361893

[16345Ed]

Most common reason on gas oven would be an ignitor that is weakening. It’s taking longer and longer to cycle causIng low temperatures. 

[PiecesParts]

Is that an easy job for DIY?

[Vance R]

Pretty easy just google "oven ignitor replacement" there are several youtube video on how to do it.

[PiecesParts]

Thanks Vance & Ed - ignitor for that old oven is not available on sears parts 

 

[16345Ed]

This will work...Part number: WB2X9154

[16345Ed]

There is an installation video in that link above as well. Unplug unit first!!!