Technical Difference in water temperature sensors

[maciu]

Hi,

I have problem according two different temperature sensors
First is from seicento 1.1 MPI and looks like that


Second is from Punto I 1.2 75


Both are 2pin and negative temperature coefficient (NTC) and both are fitted in intake manifold. I can't find any data about theirs resistive.
Do they work similarly?
Can anybody help me?
Maybe they can be used interchangeably?

 

[meshgrid]

if you have both, I would simply measure them at few different temperature points and check if they're similar. one pin should be the NTC resistor (it will show a resistance value), the other one should be overtemp switch (it will show as open until at 120°C or so). the sensor body is then gnd.

i'd bet they're the same. do you need this to connect a water temperature gauge?

 

[maciu]

The whole matter is about:
I had a sensor from punto but later when I installed ITB, remap ecu (det3 in fuel implant mode) using sensor from 1.1mpi. Now, I want change it back to punto sensor.

I don't know whether it fit in. Will ecu receive from sensor correct values

 

[meshgrid]

it's probably best if you measure them, then you'll be sure. the internet (e.g. here) says it's the same sensor on both cars