I have a 1998 and the sensor just below the radiator fill cap keeps popping out, I can't see where it uses a screw or nut of anyt kind but and it has 2 little rubber O-rings and just pops into the radiator. Why would this happen? do i need new O-rings? where can i get them or a whole new sensor? part number?

 

****** Piece of **** car....

 

Why dont I remember seeing this piece during a head or cam swap...? got a photo?

 

because it's a 1998 - 1999 thing

 

There should be a wire clip that holds it in, but it is not sold separately.