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Old 01-29-2009, 14:30   #1 (permalink)
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Join Date: Jul 2005
Location: Atlanta, GA
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O2 Sensor Connections

I have a problem trying to hook up an Universal O2 sensor to the Ford Factory wires.

I have the wiring diagrams from Ford but I can't tell which wire is for the Signal, Ground, and Heaters (2).

The factory wire colors are:

Light Blue/Orange
Orange
Red/White
Grey/Light Blue

The wiring diagram says the Red/White and the Grey/Light Blue wires connect directly to the PCM

The Orange wire goes to what appears to be a common (distribution) point where multiple other sensors* interact

*Throttle Position Sensor, Engine Coolent Temp Sensor, Intake Air Temp Sensor, Diff Press Feedback EGR Sensor


The Light Blue/Orange wire goes to the Battery Junction Box then the PCM Power Relay. This would lead me to assume the LB/O wire is the signal wire but I don't know the rest.

Would it be safe to assume the two heater wires are the ones coming from the PCM and the Ground is the one going to the common point mentioned above...there is not a "ground" symbol so I don't now for sure if this is a ground or not.
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Old 01-31-2009, 21:49   #2 (permalink)
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Re: O2 Sensor Connections

THERE ARE JUST SOMETHINGS I LIKE PAYING EXTRA FOR FROM THE DEALER TIMING BELTS, SERPENTINE BELTS AND... O2 SENSORS. IT IS BETTER QUALITY AND I KNOW THE WILL "PLUG AND PLAY". WITH NO HASSLES.
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Old 02-05-2009, 18:36   #3 (permalink)
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Re: O2 Sensor Connections

Quote:
Originally Posted by BLACKSNAKE427 View Post
THERE ARE JUST SOMETHINGS I LIKE PAYING EXTRA FOR FROM THE DEALER TIMING BELTS, SERPENTINE BELTS AND... O2 SENSORS. ...IT IS BETTER QUALITY AND I KNOW THE WILL "PLUG AND PLAY". WITH NO HASSLES.

I don't have a choice...the wire harness come loose and burnt through the connector so the universal is my only option.

Ford will not hook up a universal. They will only attempt to replace the whole harness...this is attached to the main trunk line and would cost over $800 dollars for labor to remove and replace everything.

If someone has a 93-99 Ford Ranger that would tell me the colors of thier wires BOTH on the OEM sensor and the Factory wires that would be great.

In order for this to be helpful, please tell me which color wire from the harness plugs into which color wire on the OEM sensor.

If noone has an OEM sensor, tell me the color of the wires from the harness to the wire colors from the after market sensor (i.e. Bosch)

Thanks
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