I have a 2007 as well and im thinking of just going right into the oxygen sensor. Any benefit of splicing into the ecu over the oxygen sensor. Would it throw any codes? Really i might just go with a wideband because im looking for a more accurate reading and i plan to build the motor so it will benefit me anyways.

 

It doesn't matter if you tap at the o2 sensor or the ecu both will give you the same amount. To me tapping at the ecu was a convenience.

 

what wire on the o2 senser do i want. and dont we have 2 o2 sensers. i was gonna go for the one right there on the downpipe....

 

I did my install earlier today of my narrowband air / fuel gauge and I was looking on here for help but no one was here so I unplugged the O2 Sensor and spliced into the purple wire that was behind it (I chose purple bc I looked for a purple and white wire by the ECM and there wasnt one, but I found three purple ones, so I figured I'd just play it safe and splice right by the O2) and I'm pretty sure it worked as a signal wire..... I'm going to drive my car more once it gets dark bc I'm still unsure....The reason I'm not sure is bc at idle the gauge somewhat goes crazy it'll go from rich to lean back to rich....a good sign though is that under throttle it reads rich, and when I let off it reads lean...which is normal operation.....Correct me if I'm wrong.....I have a 2.85" pulley with Stage 2 on my car...and it usually runs really rich..I've actaully had a CEL for running too rich before......p.s. for reference sake I have an 06' SS/SC........

 

lsj06ecotec i did the same thing as you with the purple/white wire. mine seems to be the same case with it goin crazy at idel. i took mine for a short did and it read rich for me. i only drove it around the parking lot here at work. but i am now gettin a CEL:

P0132: HO2II Circuit High Voltage

i dunno what thats all about. i cleared the code so hopefully it goes away...

 

I used the purple wire at the Oxygen Sensor Conn. bc I didnt have a purple and white (don't use any purple's by the PCM bc you won't know which one controls what since there are 3 of them)....but if you used the purple then you used the right one....I drove mine again for like 30 minutes around town...tried to put it through all circumstances...no CEL and it reads what it should: rich under throttle, lean when I let off, Stoich. at idle...except sometimes it reads all over (lean to rich, then back to lean, back to rich) but all in all I'm happy with it..I do notice that its input is a bit slower than a wideband's...thats to be expected since it uses the stock O2 Sensor and your only input is O2 High Voltage Signal....and the wideband uses high and low....but its ok, I wish I could help ya TSA...All I can say is that it sounds like a bad splice connection...I used a butt connector on mine...I would say start by going back and checking your connection and make sure your crimps are good, I know its hard to get way down there at the O2 connector so it might be that the wire came off one end bc the crimp wasn't tight...bc if there is an open you'll read a false signal and throw the CEL...good luck.....

 

ya the engine was hot so i didnt go all out on the splice, im gonna go over it all 2morrow sometime when the car is cool.....

 

the code went away after i cleared it and hasent come back in about 100 miles so i think im good 2 go.

 

I am interested in doing this, where can I find the O2 sensor on the 07 SS/SC?

If anyone has done this for an 07 SS/SC please PM me.

 

okay my o2 sensor in my 060ss sc has four wires, which one is the signal wire. help me

 

same here had all but this last wire hooked up 2 weeks now

 

What does that mean? lol, I have 4 purple wires, and I have no idea which one it is. I am afraid I might mess up the electrical system by doing this, since it appears that nobody is in agreement as to what to do.

 

That is the GHETTOEST way to get power EVER!

If you do this you deserve consequences. Get an add a circuit or tap a wire correctly.

If your gonna get power that way why don't you just tap a 9v battery for power? You have to run less wire and you wouldn't blow up your cars ECU.

 

Oh come on. That fuse is protecting the ECU. Common Sense is to put the wire on the side that doesn't have constant power.

I just wanted to get the gauges hooked up. Had a add a circuit in the shop for a couple months. Then I stopped driving the Cobalt so it never got done. Then the car got totaled so adding a circuit would be pointless.

If you add a circuit to every god dang wire you add-on to the car then THAT is a waste of wire. There are already some circuits in the car already that can handle a couple gauges added on...JUST gauges though. You just have to know how much current you need etc. For my neons I ran a new circuit because I didn't want to risk anything.

 

What wire should I look for in a 2.4L?

 

you have to tap into the purple and white wire to get a proper signal from the exhaust manifold...and it didnt take very long

its the same wire in all the cobalts

 

where do you find the firewall on the supercharged ss to bring the wire threw on the hanger??

 

There is a grommet there already just poke a hole through it and run the wire.

 

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Hey I made this circuit for people who don't want the light show except at WOT.

 

I bought the 3 pod pillar from Cobalt addiction. Now how do I run my wires down the A pillar int the engine bay

 

theres a grommet in the firewall

 

so anyone found out which purple wire it is on a 07 2.2 yet? i have a narrowband and i wouldnt mind just wiring up for play until i get a wideband.

 

Ok, this thread is kind of dead and old, but Ive got a couple questions about this install. Ive got the Autometer A/F gauge, its just for decoration in my dash, I know its not accurate. Everything has me confused because there are a million different ways told in this thread. After reading, my plan right now is to tap into the signal wire coming off the 02 before the cat. For power, tapping into the fuse shown on here that doesnt have constant power on the one side and adding an add-on fuse. What amp fuse should be used in the add-a-fuse? The instruction manual for my gauge says to attach the power wire to a 5amp fused spot. The one shown is 20amp I believe. Is there any other means of power that I can use for the gauge where it will not be constantly on? Such as a power wire in the ignition wires in the steering column or something? Any help is awesome, thanks!

 

bump