4-wire O2 sensor part#?

[Guest TurboSedan]

does anyone have a part # for a GM 4-wire O2 sensor? i need a new O2 sensor and thought i might as well convert to 4-wire while i'm at it.

 

thanks

[Guest TurboSedan]

thanks Dave i just went to the GM dealership and ordered it.

[Guest TurboSedan]

$72

 

that's about what i was expecting. the Mopar 4-wire O2 sensor i bought for my GTS was $68.

[Brian P]

AFS-75 delco #

[GutlessSupreme]

Fill me in...

 

what's this for (these multiple wire O2s)? wideband?

[mfewtrail]

Fill me in...

 

what's this for (these multiple wire O2s)? wideband?

 

They're heated oxygen sensors whereas our stock ones are non-heated.

[GutlessSupreme]

Oh. What sort of a difference does that make?

[Prospeeder]

when you have regular o2, it takes time for them to heat up and read the a/f mix and adjust it for best fuel economy, but untill then, it runs open loop, heated automaticly heats them up so u dont have wasted gas on cold starts

[mfewtrail]

Heated oxygen sensors allow the car to enter closed loop quicker. This cuts down on emissions since you're not dumping as much fuel as usual on cold starts. With a turbocharged car, the turbo is absorbing some of the heat from the exhaust, so they take longer to warm up(since the stock o2 relies on the heat from the exhaust to warm it up). Heated o2's provide more accurate readings, so the engine will operate more smoothly than with the OEM sensor.

[GutlessSupreme]

Oh, alright.

 

Thank you 8)

[Guest TurboSedan]

another reason i want the 3-wire O2 sensor is that the A/F guage might be slightly more accurate due to the extra ground wire.

[slick]

So would a 3 wire O2 sensor be that beneficial on a N/A vehicle then?

[5speedz34]

So would a 3 wire O2 sensor be that beneficial on a N/A vehicle then?

 

Yeah, it sure would.

 

Eventually I'm going to get one so it helps with my car running so goddamn rich.

[Guest TurboSedan]

So would a 3 wire O2 sensor be that beneficial on a N/A vehicle then?

 

definately, even my NA Bonneville SSE has a factory 4-wire O2 sensor. my GTS has factory 4-wire O2 as well. i'll have to do a little wiring for the Cutlass but that is easy:

 

- sensor

- ground

- 12V switched power

 

in the case of 4-wire O2 it is only one more ground.

[slick]

So basically, it just gives a more accurate reading when the engine temps are still cold for less fuel consumption then, correct?

[Garrett Powered]

I have been noticing mine starting up cold and running rich enough to blow out black smoke for a few minutes. That is why I am going to do this mod real soon.

 

It is so bad that the new synthetic oil I put in like a thousand miles ago already black from running rich a few miles everyday. After it warms up the smoke goes away.

 

I was wondering if you need to turn the key on for a minute before you start the car or does it heat up instantly?

[slick]

Hmm... same problem here. My synthetic oil looks like crap each oil change. I think I'll give this O2 sensor a shot the next time I have that much damn spare money.

[Guest TurboSedan]

beware though, i think the oil from your hands can contaminate the O2 sensor element.

[TurboGTU]

I'd like the 4 wire since you can connect the O2s signal ground close or at the ECM...that way if your engine is not grounded well...it will still give a good O2 reading.

[SleeperRed90TGp]

hey Josh

 

ok i have gone through many O2's in the last few months

 

my car when it was running to rich, ate Bosch O2's like mad.....

 

the part # for the bosch 4 wires is 13275 but i say they suck!!!!!!!!

 

 

i now have a AC Delco O2 (made by NGK) and its a way better and suprisingly smaller in height than the Bosch and Standerd brands.

 

Its only a 3 wire but thats only because there is only one ground wire not 2 like the Bosch.

 

 

AC Delco 213-610

GM 25172680

 

its way better than the Bosch and Standard Brands

 

and one less ground to deal with being 3 wire

 

wiring is easy

 

2 white wires, one to 12V ignition and one to ground (no matter which one)

 

one black wire to the O2 to ECM wire

 

lemme know if you need more info

 

I would imagin they suck because you have been poring gas through it.

 

I started this 02 business and I still have the same one in there which seems to work pretty good. The 4 wire is infact a 3 wire if you use one ground for both grounds. For the price you paid I could almost by two 4 wires.

 

Sorry your having trouble with it but I don't think that's your problem.

 

Jud

[SleeperRed90TGp]

No No I was just pointing out that pouring gas on an O2 sensor will eventually wipe it out. I don't have the KM's you do but I do have alot more time on mine. And If you remember I did it because Iit was running to rich when started and the heated 02 took alot less time to lean it out and it's still going.

 

 

don't direct your question to me, I don't know shit about an 02 sensor.

 

Relax Dave I wasen't saying either one was better.

 

Jud

[Guest TurboSedan]

well i found out my O2 sensor isn't dead after all. my guess is that i didn't test the O2 sensor long enough with my volt meter long enough to start seeing the voltage go up and down (i was testing it with the engine fully warmed up of course). i wired up my A/F gauge today and to my surprise it started sweeping back and forth after i drove the car about a block. i'm still going to install the 4-wire O2 though.

[maybe2fast]

this post needs to be brought up again!

 

I am going to switch to a 3-4 wire O2 on both of my vehicles. It seems to benifit them alot.