What is this?

[Munch]

What the heck is this sensor right here? Its right next to the coolant temperature sensor. The plug in the foreground is supposed to be attached to it, but i cant get it to stick on. Whenever i would look at it before, the plug seemed barely held onto the sensor, perhaps even with some kinda gluish type stuff.

Also, does anyone know where i can get a new plug for my coolant temp sensor? As you can see in the pic, one of the wires on mine is broken. Probly havta see if i can nab one from a junkyard or something.



(picture should hopefully be visible now...i put it on imageshack)