lambda sensor

[rbrocky]

ok i have a 1.2 8v mk2 ph1
and on the lambda there is 4 wires coming off
white, black, grey and another white
what are these all for?
thanks
BROCKY

 

[chris182cup]

do not cut the grey wire it will detonate the bomb

 

[cliosportcraig]

Earth
Heater
Signal
Dunno lol

They go to the ECU and tell it how much oxygen is in the emissions

Why?

 

[pa.ge]

earth,signal, (+12v,-12v are for heating the sensor for 30-40 sec at cold start)

 

[rbrocky]

what one is the signal then, what colour!
as i got an afr
yeh only narrowband, but i dont actually want it to tell me accuratly, its jsut for the look reely, anyways dont have a clue what wire to connect it up to.
thanks
BROCKY

 

[rbrocky]

bump

 

[pa.ge]

....Hmmm, i can't remember witch is the colour, but you can find it.

Take a polymeter, turn it to mVDC or 2VDC, splice CAREFULLY (with gentle) cables of λ. Start your engine. After 1 minute, take one terminal of polymeter to (-) of battery and check with the other terminal, cables of λ.
At idle you must read a fluctuate rate beetween 200mv and 800mv aka 0,2v-0,8V.
This is your cable... connect your signal AFR there...
At other cables you may read 0,00V or battery charge (13.5v).

looks a lot but it is not...