http://www.b15sentra.net/forums/showthread.php?t=158978&highlight=temp+sensor Has a pic fer ya.

The phatg20 link for a FSM is out of business, though.

 

^^^ thanx for the link but thats not the Thermal Sensor. What I'm looking for is the single wire Thermal Sensor. This is what works the temp guage. What is in the link is what talks to the ecu and runs the fans.

*** edit I the water valve housing is what is showen in the linked pic****

 

One thing I did not realize (I just figured this out today while playing around).

There are two coolant temperature sensors:
1) Coolant temperature sensor. Has a push-on connector (similar to that found on the TPS). As far as I can tell this is what is used to control the fans. When I unplugged this and started the engine, the fans immediately started running.

2) Thermal temperature sensor (this is what it is called in the FSM). This is the sensor right next to the CTS (#1), which has a single spade connection. This is used to send a signal to the temperature sensor on the gauge cluster.

They are two different parts and they control two different things. I think even if the thermal sensor is not working your fans should still function.

I think duder means the one you want is right next to the other one. I haven't had to fix mine yet, yet.

 

???? Have you opened up your hood lately? My 02 SpecV has only 1 item in the water valve housing which is exactly what is listed on that pic. I have also been told that it mounts to the back of the head. I just dont see where it mounts. I'll go take pics of my car..

 

I'll check it out at lunch; i honestly can't remember.

 

Here is my wifes car as it sits now. Yes 02 SpecV "6" Speed

This looks just like the linked pick with no thermal temp sensor

 

no Idea why there was a double post....

 

You are right; i didn't see another sensor on mine either. Sorry man; i don't know where that damn thing is.

 

Here are the parts I picked up yesterday.

L-R
Vater Valve (was told this in needed to keep the head temps up because the QR has no EGR system 95 deg C)
Thermostat mounts on front of block (82 deg C)
Engine Coolant Sensor

Down front is the problem, where the hell dose this stupid thermal sensor go.....AAAAAHHHHHHHH

 

So did you ever find both sensors?

 

Bringing an old thread back to life. But Its better than starting a new thread. I am having the same issue and cant find this stupid sensor. I've also found it online called the "Coolant temperature sender." Regardless, I really need to find it if anyone knows where its located.

 

I didnt find the sensor, but I did realize it is my actual gauge that is messed up. One time when it spiked I just tapped on the gauge a few times and it went back down.

 

Damn depressing to be here at the bottom and still nobody has posted the location of the coolant temp sensor. Can't find data on a mad reground so par for the course