Anyone know what this 'sensor' is in the boot ?

Fosworth

Well-Known Forum User
My 1976 280Z has what I think is a sensor screwed to the boot floor on the nearside. It is factory as it has a little metal shroud over it but I can't make my mind up what it does. Please can anyone tell me ?
At first I thought it was a fuel cut off, in case of a collision but it doesn't have a rest on it so can't be that.Electrics 1.JPG
 

Mark N

Club Member
It is the floor temp sensor above the exhaust.
There should be a warning light on the dash centre panel above the heater controls.
 
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MaximG

Well-Known Forum User
It’s a floor temp sensor that according to Haynes is only fitted to California models. It goes to a relay but trying to read the wiring diagram is impossible.
 

Mark N

Club Member
It’s a floor temp sensor that according to Haynes is only fitted to California models. It goes to a relay but trying to read the wiring diagram is impossible.

Here is a simplified version:

Screen Shot 2020-10-18 at 11.41.11 PM.png

It basically warns if the cat is getting too hot from either engine problems or spirited driving, based on the temperature of the floor above the back box.
It's certainly not going to be the most accurate means of ascertaining cat temperature.
 

Fosworth

Well-Known Forum User
Thank you all, I was confident the answer would pop up and it did. That's what the forum is all about. Mind you, now I know what it is I am not sure it will change anything what so ever but it's nice to know.
 
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