Originally Posted by jwikoff99
It'* in one end of the radiator, can't remember which. You have to drain the radiator to do it.
No, no, you can just stuff a rag in the hole while you have it out; it'* on the passenger'* side end tank, about a third of the way down, directly below the radiator cap.
Only thing is, they're great for giving false alarms like this, and I have yet to figure out what kind of cleaning would help them. They're basically just two metal probes immersed in the coolant. I guess they get some sort of crud buildup on them that blocks the conductivity through the coolant from one probe to the other, but I've had mine out and I don't see what sort of solvent I should be using. I mean, they're not rusty or anything; they're just discolored. I could try scraping them, I guess...?
If the sensor itself has gone bad and its normal resistance is now out of range, replacing the sensor would be your only option, but ISTR that when I went through the FSM about this, I couldn't find any numbers to tell me what the normal resistance was _supposed_ to be.