My Datalogger is not getting a reading from the front o2 sensor, I changed it out the front o2 for a brand new one and it is still not getting a reading, the check engine light came back on for it. Any ideas? What should each of the 4 wires read if i tested them to find out which wire is bad?
#93813, "RE: No Reading at o2" In response to Reply # 0
Did you look for a short in the wiring at all? If it wasnt working good, you would know. You would run incredibly rich I beileve and it would idle pretty shitty.
#93814, "RE: No Reading at o2" In response to Reply # 1
Yes I am running very rich and my idle is shitty. I need to know the reading i should have on the wires so I can find the short. Also if anyone could explain the color scheme of the wires and what each one does i would be very appreciative.
#93815, "RE: No Reading at o2" In response to Reply # 2
Universal Bosch (or refer to your paper that came with it):
Blue wire = Signal White wire = Ground Black wires (2) = Heater
O2 Sensor Harness Wiring:
White-Black = Signal Black-Green = Signal Ground Black-Red = Heater Power Black = Heater Ground
So hook it up like this (harness => sensor):
White-Black => Blue wire Black-Green => White wire Solid Black & Black-Red => black wires
Disconnect your ground terminal while you're doing this. Mine was hooked up wrong and it still wouldn't work after I hooked it up correctly. It's like there was a circuit breaker or something that was tripped and didn't reset until I unhooked power to the ECU.
~Luke Facebook 1969 Cougar - 11.91 - 380HP 2007 GSXR 750 1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot
#93823, "RE: No Reading at o2" In response to Reply # 4 Oct-13-05 05:31 AM by cougar694u
Originally posted by eclipse7782 which wire should be apex i turbo timer be hooked up to, to read the o2 sensor?
I think you could figure that out if you read the wires posted above:
black/green = signal ground (no, it's a ground) black/red = heater power (no, it's a power wire, nothing to do with the signal) black = heater ground (no, ground again) white/black = signal (bingo, it says signal)
**EDIT**
Originally posted by eclipse7782 ALso can I tap into the heater ground and the sensor ground and ground them directly to the car? To see if one of the grounds has a short>?
That I don't know. wait, isn't that an oximoron? 'short' is short for 'short to ground'. if a ground had a short to ground....but I do understand what you're asking. I don't know if the signal & heater grounds are chassis/common grounds.
~Luke Facebook 1969 Cougar - 11.91 - 380HP 2007 GSXR 750 1999 OZ - SOLD - 15.26 NA - 14.71 on 75 shot
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