redfive0

Does anyone have a wiring diagram for the o2 sensors... there are three wires that run to the harnesses... i think its purple yellow and green, but the harnesses are completely diffent colors, if anyone has a wiring diargram or anything like that on how to rewire it up, ( a ghetto person owned the car before and gehtto rigged it so ****ty. . . )

thanks
greg

redfive0

anyone?? i dont have the haynes manual and the car is really running like **** right now... please help me out guys

roundman

all I can find is this. there are generally 3 wires going to the O2 sensors. one is key power, so you can test the wires coming from the harness to see which one has power on it with the key on. this one goes in the sensor plug in the lower left corner. just above this is the ground wire and the upper right is the sensor signal wire coming out of the sensor. if there is any original wiring left, I would just match colors to the same color and see if this doesn't work.

redfive0

thanks for the reply, but the thing is the harnesses were cut and rewired and i think that they did them wrong. . . if anyone has the time or if your car is ever up can you test the pins for me and tell me what each pin should have...

the harness i have has three pins two on the top and one of hte bottom right


( O O )
( O )


like that...
thanks again
greg

roundman

the bottom pin is sensor power coming from the battery. should show 12 volts or better here.
one directly above that is the ground connection and the other is the output from the sensor, with voltage on the sensor, this should read out some low voltage signal.

ground ( O O ) sensor output
12 volts in ( O )