oven would not come up to temperature

Removed sensor from back wall of oven by removing 2 screws from flange. I could not pull the wire-nut connections out through the small hole and thought I would have to pull the whole oven out of the wall to acess the connections from the back so instead I clipped the wires close to the old sensor and connected the new sensor with the small wire nuts provided, then enlarged the hole in the oven wall, being careful not to pinch the wires then pushed the wire nuts and extra wire back through the hole and put the screws back in the flange.