i'm wiring in a heated O2 sensor because the car is running like @!#$ since the primary is to far away now. i have one from an 88' odls but i got looking in the shop and noticed that the ectoec has a 4-wire as well. i know its heated but don;t know the colour scheme. Been searching like a mad man all over the forums and the net with no luck. need help bad!!!

black - purple = signal
grey - yellow = ?
white - green = ?
white - pink = ?

GM does have a 3 wire. Purple, black and white.

ill dig through my catolog and find the part number.

Chris



'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

like i said before. its a 4 wire, both of them. but i want to know about the ecotec

ok so green is the reference voltage and one white wire is the heater power and the other is the ground. now do i need the reference voltage wire? and which white wire is which????

... get a servace manual, 2 of the wire provide refrance for the motor, with a 200 up 2.4 or the eco.

thats why i was geting at using a 3 wire, purple is ref. for the ECM, and the others are for the heater.


but use what you want, ill stop looking.

Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

what i care about is knowing does it matter which way i hook the white wires up. as in, does it matter which wire goes to ground and which to a 12v source?

no just throw it on, sounds like thats what you want to hear.

Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08

well if anyone else wants to know, GM 3 wire-

tan, tan and purple wire, or heater, heater and MV for the ECM.

you have to make your own conector for the two heater wires, and reuse your plug from your own one wire.

GM PN 25312158
delco PN AFS76



Chris


'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08