So, yeah like the title says. Got the new one in and I saw there are two wires coming from the connector to the wiring harness but there is only wire from the harness to the connector/two wires.

It's green but I KNOW there has to be a second wire. I traced the harness back just to make sure I didn't snag the original wire but it must come from a different section and meet up with the green wire enclosed in the plastic safety tubing stuff.

 

The temp sensor in the head has one green wire and that's it. Be careful of getting the wrong sensor from parts houses.

 

That's normal. There is only one wire.

 

broke mine when changing a exhaust manifold gasket..and have gotten nothing but wrong sensors from the parts houses...anyone have a part number for the correct one? mine is a 93 z28.

 

Yeah same here, glad everybody cleared it up that there is only one thought I was crazy cause the guys at NAPA and places I ordered online told me I was. wtf

 

Listed on my part numbers page...

1993-1997 coolant temperature sensor for gauge
AC-Delco # 213-77
GM # 25037332

 

Just went through this same problem yesterday. You have to ask for a temperature SWITCH not sensor. Autozone part # TU152. Had to go back three times and finally found the right person behind the counter that knew what I was looking for.

 

Maybe at AZ, but it is listed as a sensor in the GM and AC-Delco books. I mean, it doesn't switch anything, LOL.

 

so whats the part number for the 96 style one wire ?

 

All 93-97 use the same part #. Shoebox already posted it:

 

Auto zone Duralast # TU152 Temp Switch as it says on the box. I had looked up the sensor on Napa, Oreily's, and AZ only to have the wrong part listed. The right one is listed if you search for temperature switch. The black cover sensor is the wrong one you want the one with the gray plastic cover.