Coolant Temp Sensor

And for the computer.

Nope. That's your coolant level detector.

I wondered about that. Can you explain how that thing works? Seems to be a glass enclosed microswitch. No contact with the coolant, just sits in a chamber which extends into the reservoir. I really don't understand how it works. Not really having problems with it, removed the tank to clean it out real good and saw it and when I removed it the rubber "o" ring fell apart. Doesn't seem to be a water seal as most of it was already missing. When I reinstalled it I used some Teflon tape to seal it. I assume the "o" ring seal is for dust & dirt. No leak as far as I can tell.

Jerry

And for the computer.

Nope. That's your coolant level detector.

I think I've got it. the sensor is a magnetic reed switch and there is a float with a magnet on it so that when the coolant gets too low the magnet activates the switch. I think I'm correct.

Jerry

Jerry

And for the computer.

Nope. That's your coolant level detector.

Both coolant temp sensors are located in the cylinder head. The one with 2 wires is the one for the computer and the one with a single wire is the one for the gauge.