Upstream O2 Wiring Colors

[Jeeplife7926]

1998 Jeep XJ Sport 4.0 I6
Just finished rebuilding engine.
First minor hiccup was a leak at manifold gasket. Replaced and fixed a high idle issue.
Now i'm throwing a code P0171

After researching the code and the plethora of things it could be.
I'm going to start with the upstream 02 sensor.
I read posts on XJ's with similar symptoms. (Drinking Gas, Low MPG, Black soot in exhaust, can almost smell un-burned fuel.
Read that replacing 02 fixes the issues.

I just installed two new Bosch 02 Sensors.
Thinking I might have miss wired the upstream sensor.

Here is what I need.
Wiring colors for a 1998 XJ on Upstream 02 sensor.
New 02 is White, White, Black and Grey.

Ill report back shortly with what I have as far as factory colors and how its wired just gotta go crawl under the jeep.

Thanks

 

[Jeeplife7926]

Crawled under and here is what I have

People searching in the future this might be wired wrong

Green-White stripe / Black
Brown-Yellow Stripe / Grey
Black-Green Stripe? / White
Black-No Stripe / White

 

[Jeeplife7926]

Answered my own question
Took a long time to find this info.

Here is a great link to a very detailed disscusion



Harness Black/dark green = o2 sensor signal = Bosch sensor black
Harness Brown/yellow = o2 sensor ground/return = Bosch sensor gray
Harness Black & Dark Green/white are the heater element wires, connect to sensor white wires, no polarity so no difference on how white sensor wires are connected.

http://www.cherokeeforum.com/f2/02-sensor-wire-problem-161186/

 

[Jeeplife7926]

Update

Rewired 02 sensor to unconfirmed color combination above.

Cleared CEL
Drove XJ for 2 days and threw a CEL
Still P0171.

Code says lean and its running rich,
I recently installed a Vibrant flex connector on new SS exhaust system
During pressure testing I noticed leaks at the Flex connector
The Flex is located between DT exhaust manifold and SS downpipe.
Right before the upstream 02 Sensor
I'm thinking this leak is making the 02 sensor read to much oxygen.
Making the XJ consume more gas.

Here is a link to very similar thread.

http://www.jeepforum.com/forum/f13/...ugh-idle-poor-mpg-loss-power-up-hill-1293060/

Image of my XJ's - downpipe, O2, and Vibrant Flex