4-wire O2 sensor wiring?

BAC5.2 · Post by **BAC5.2** » Wed Apr 06, 2005 7:31 pm

How do I wire a 4-wire O2 sensor?

I spoke breifly with Vikash about it earlier and he said that I had to solder something to the heated ground.

Anyone got ideas?

vrg3 · Post by **vrg3** » Wed Apr 06, 2005 7:34 pm

Didja read this thread? http://bbs.legacycentral.org/viewtopic.php?t=14247

tris91ricer · Post by **tris91ricer** » Wed Apr 06, 2005 8:04 pm

Where might one come up with a 4wire o2 sensor?

vrg3 · Post by **vrg3** » Wed Apr 06, 2005 8:06 pm

Most newer cars use them. You can buy them from any respectable auto parts store. OxygenSensors.com seems to have good prices.

I pulled mine off a practically new Korean car in a junkyard.

tris91ricer · Post by **tris91ricer** » Wed Apr 06, 2005 8:15 pm

A daewoo, or a kia? *giggle*

vrg3 · Post by **vrg3** » Wed Apr 06, 2005 8:16 pm

I forget. It might even have been a Hyundai. It had two sensors easily accessed right at the front of the engine bay, so I grabbed both.

tris91ricer · Post by **tris91ricer** » Wed Apr 06, 2005 8:33 pm

Hyundai was my thought as soon as I hit submit..

If I don't wanna order one online.. where might they be found? Tristan's pretty fond of paying cash.

vrg3 · Post by **vrg3** » Wed Apr 06, 2005 11:37 pm

A new one? Any auto parts store.

A used one? Any auto parts recycler.

Pretty much any oxygen sensor with 4 wires will do.

stipro · Post by **stipro** » Thu Apr 07, 2005 3:20 am

Maybe a simple diaghram would help with the correct wiring procedure. Some of us work better via visual aids.

Vikash? Josh?

EDIT: Never mind, this is about as straight forward as it gets. Duh

Legacy777 wrote:Ok, here's what the wires are & what you connect what to what.

OEM O2 sensor wires

Black = Heater Ground

Red = Heater 12v+

White = O2 Sensor

Walker Generic 4-wire O2 sensor wires

Blue = O2 Sensor

White = Sensor Ground

Black = Heater Ground

Black = Heater 12v+

Since the heater is not polarity dependent, it doesn't matter which black wire you use at ground and 12v+.

When you hook things up

Hook OEM white wire to Walker blue wire

Hook OEM red wire to one of the Walker black wires

Hook OEM black wire to Walker's white & other black wire.

questions?

BAC5.2 · Post by **BAC5.2** » Thu Apr 07, 2005 4:28 am

I got mine from Advance. I asked for the sensor for a 99 Acura CL V6, and up came 2 several hundred dollar sensors, and one Bosch Universal 4-wire sensor.

$70 bucks later and I got it. It looks different though, but whatever. I'm about to go make my wiring harness.

BAC5.2 · Post by **BAC5.2** » Fri Apr 08, 2005 8:44 am

Well, I just made a completely custom, plug and play, foolproof harness.

Took a bit of time because I was watching a movie at the time, but it came out OK. Now i'll find out tomorrow if it works!

I used a Bosch Universal bit.

The sensor portion looks completely different, but it should be OK. It's still a 12v sensor.

legacy92ej22t · Post by **legacy92ej22t** » Fri Apr 08, 2005 1:01 pm

Sweet! I hope it works.

BAC5.2 · Post by **BAC5.2** » Fri Apr 08, 2005 2:42 pm

Thanks! I'm gonna swap my ecu too, just to be sure.

Tleg93 · Post by **Tleg93** » Tue Apr 12, 2005 10:50 pm

Custom harness? Care to upload a pic of your setup?

BAC5.2 · Post by **BAC5.2** » Wed Apr 13, 2005 8:15 am

Oh, it didn't work. Car ran sickeningly rich and wouldn't idle.

I took it out after the car ran for 10 seconds, and it was STRAIGHT black.

I'm gonna take it back to advance and just get one from a WRX which has a 4 wire sensor that looks similar to ours.

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4-wire O2 sensor wiring?

4-wire O2 sensor wiring?