Recent content by techchoiceparts

Well, if it chirps only when the A/C is on, then it's not the bearing; the bearing is turning any time the engine is on. If the bearing was bad, you'd hear noise all the time. With the A/C on, spray some WD40 or something on the belt, and see if the noise goes away. If it does, consider...

Are you talking about the copper wire coming off the top of it, with a coil at the end? If so, that's the temp sensor. It adjusts the flow of refrigerant based on the evaporator core temperature.