Oven met fire extinguisher
 

Hi, While my daughter was cooking in our Whirlpool gas oven (model #GFG464LVS) something dropped to the bottom and caught fire so she doused the inside with a fire extinguisher. Now the oven will initially light and then, around 140 degrees, stop. It will sometimes reignite and (the minority of the times) be able to cook and other times continue to stop and start. Which item (hopefully not more than one) might be faulty?

Many thanks,

Joe