there are 2 "sensors - one is a 195 degree sensor for the o/d to activate the o/d circuit, the other is the gauge sensor. The issue is both are marked sensors, and without the proper number for the gauge sensor, there is no way to know which of the single blade sensors is the right one. the sad part is beck Arnley just reboxes the parts and does not know if they are right or not. The 195 degree sensor is an on/off switch and will do exactly what you are seeing with the temp gauge.