A cosworth lamba sensor has 4 wires (if u dont know)

I got 2 whites for power and earth. And I've got a black and a grey.

Does anyone know which is earth and which is signal. I would gather black is earth but I was told it was signal so i though i'd ask the pro's

 

All the Cossie Lamda sensors I have seen only have 3 wires - Red, Black and Grey/white

 

thats f**ked it then. Was told it was a cossie one. Its definately a ford lamba cos it marked.

 

The two whites are for the HEATER, ie one is live one is earth(heater only)
The black is SIGNAL WIRE, the Grey is earth.
This shows it to be a ZIRCONIA SENSOR.
Ford also use another four wire which is BLACK, RED, YELLOW, WHITE, but these are 0-5 VOLTS, where as your one is 0.1-0.9 VOLTS.
hope this helps.
tabetha

 

perfect. thats a few times you helped me out tabetha Thanks very much

 

No probs glad to get one right for once!!
tabetha

 

tabetha,

You worry too much matey