Stang-Slayer

iTrader: (16)

Well basically the 02 sensor wire that goes from the header to the pcm was hanging too low and was pretty much cut off.

It is cut between the connector and the pcm, I still have the sensor and connector though. A good 6 inches of wire were chewed up by the road too.

Any ideas on fixing this without having completely off readings?

mike171562

iTrader: (4)

I believe splicing your o2 wires is a bad idea, replace it.

pentavolvo

solder and heatshrink

Stang-Slayer

iTrader: (16)

well to replace it do you have to solder it onto the PCM?

01 Red WS6

iTrader: (4)

The manual says it's not a good idea to solder the wires as it can cause misreadings. Is it the sensor wiring or the harness thats messed up?

Stang-Slayer

iTrader: (16)

I guess the harness....its between the connector and the pcm where the cut is

Stang-Slayer

iTrader: (16)

Anyone know if there is a connector or something deeper? Its cut right past the connector that is a foot away from the sensor

gm02ceta

iTrader: (9)

Listen to what this person is telling you!

Your o2 sensor will not work properly once the wires are cut or badly damage. Your car will start acting funny or overall performance will suffer. I know cause I tried repairing one only to end up buying a new one.

lemons12

iTrader: (71)

https://ls1tech.com/forums/parts-cla...2-sensors.html

TransWS6Am

iTrader: (41)

are you using you rear o2 sensors? If not, just re-pin your PCM and use the rear connectors to plug your front o2's into.

Stang-Slayer

iTrader: (16)

How bad is doing that? Do you have to desolder the rear o2 wire and solder it on to where the front one would go on the PCM?


I'm listening but you aren't getting it. The O2 Side of the wire is screwed also, and I know I have to get a new one, but what about the part of the wire that is screwed between the connector and the PCM?
Do I just need a whole new wiring harness?

TransWS6Am

iTrader: (41)

Not bad at all, wires are not soldered to the pcm man, they are just pins, all you need as pin pusher (like $5). It may take 15 minutes at most.

Stang-Slayer

iTrader: (16)

Ahh sweet, do u think that longer wire would have different resistance because its longer and throw off the reading?

Thanks for all the advice man

TransWS6Am

iTrader: (41)

I don't see how it could be any worse than the guys running corvette rear O2's as f-body fronts. I mean those things are like 24" long.
What I do is this, I have a GM weatherpack terminal crimper. I get the corvette rear 02's, then I cut them to length, and crimp new weatherpack pins onto the end of the wires, and re-insert them into the weather pack connector, it gives you the perfect length wire, and your not "splicing wires", all your doing is making the wires shorter, and hooking the wire back into the connector, the same way they were brand new outta the box.

Stang-Slayer

iTrader: (16)

Ohhh Nice, how much that run you?

Any Idea what the sensor reads? I thought it was resistance but I'm looking in some manual and its saying something about reading from .1-.9 volts

TransWS6Am

iTrader: (41)

The crimper was like $20, the pins.... LOL, they are like $0.15 a piece, and that's for real DELPHI GM pins.

O2 sensors read oems of resistance I believe. They switch on and off rapidly.

Edit: The crimper has came in very handy many times, I don't run any type of adapters on my car, I install the correct connector on the ends of the wires. I've done this with my LS7 MAF, and my USCAR/EV6 injectors. Adapters just clutter up and already cluttered engine bay.

01 Red WS6

iTrader: (4)

I've done this to with connectors. I thought about doing it on O2s since I need to replace mine. What size connectors are they? Where do you get yours from?

I got my crimper off eBay for pretty cheap and I have a lot of different adapters depending On what I'm working on

TransWS6Am

iTrader: (41)

part number 12048074, your gm dealer should have them, if not I order form mouser.com

Stang-Slayer

iTrader: (16)

sweet, thanks for all of the advice!