Harty2000

This lambda sensor is gonna kill me
My knackered lambda sensor contains a black, white and red wire which is quite rare or so i am told. I have just obtained a universal 3 wire one with black and 2 white wires.
Can i wire up the black to the black and the 2 whites to the red and white or would it do damage?
Its costing me a fortune in petrol at the moment with my knackered lambda so if i could wire it up this way it would be a god send.

jameswrx

iTrader: (4)

In a universal 3 wire with 2 white and one black the black wire will be the signal wire.

The two white wires will be for the heater and it usually doesn't matter which one goes to + or -

Harty2000

Cheers for the reply mate
As the voltage is different on the zirconia and titania it shouldnt matter?
I think the zirconia is 0.1-0.9v and the titania is 0-1v, but if i wire the 2 whites to the red and white wires I cant see why it wont work.

jameswrx

iTrader: (4)

The way you described in your first post is correct I think. Looking at universal wiring they allways seem to use black as the signal wire. Whether it'll work with differing voltages I'm not sure.

Roojai

No, I don't think thats right.

JamesWRX is right in his second post, black is the signal on the universal, but on your car you need to wire up the white from your car to the black on the sensor. The red and black wires are the power for the heater.

You should use the 0-0.9v sensor for scoobs, which are easy to obtain. I don't know if it would make a big difference to use 0-1v sensors - you need to check if there is a different voltage output for stoich conditions.

I will be back in a second after looking at my car to confirm what I just said about the wires.....

jameswrx

iTrader: (4)

You could always check with a voltmeter..

turn ign on, check for 12v, check continuity for ground and other should be signal

Harty2000

Cheers lads. Just about to have a crack at it now
white-black
black-white
red-white is the way im going to wire it

Roojai

just checked it - I was right, white from standard car plug is the signal - should go to the black on the universal.

Harty2000

Ive fit the lambda and the car seems to run better now, no hesitation at low revs.
I reset the ecu and did the diagnostic check and it still comes up with error 32-lambda sensor. Could it be that the error will always be in the ecu now even with the reset or should the error have gone?

buzzard

are you sure you cleared the faults from the ecu.

Harty2000

All i did was rest the ecu by connecting the green and black plugs together and driving until the CEL flashes. Is there another way of clearing the faults from the ECU?
Also when the ecu was reset and starts to flash it was a constant flash which means theres no faults isnt it?
But then when you just have the blacks plugs together it comes up with error 32

Roojai

That should reset the ecu.

Is your sensor a 0-0.9v one?

Did you try using the multimeter like jameswrx suggested?

what year car is yours?

Harty2000

I think it is a 0-0.9v zirconia lambda, and the car is a MY96 uk turbo.
I couldnt find me voltmeter to check it.