Guest TurboSedan Posted September 2, 2005 Report Share Posted September 2, 2005 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 Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 2, 2005 Report Share Posted September 2, 2005 thanks Dave i just went to the GM dealership and ordered it. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 2, 2005 Report Share Posted September 2, 2005 $72 that's about what i was expecting. the Mopar 4-wire O2 sensor i bought for my GTS was $68. Quote Link to comment Share on other sites More sharing options...
Brian P Posted September 3, 2005 Report Share Posted September 3, 2005 AFS-75 delco # Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted September 3, 2005 Report Share Posted September 3, 2005 Fill me in... what's this for (these multiple wire O2s)? wideband? Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted September 3, 2005 Report Share Posted September 3, 2005 Fill me in... what's this for (these multiple wire O2s)? wideband? They're heated oxygen sensors whereas our stock ones are non-heated. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted September 3, 2005 Report Share Posted September 3, 2005 Oh. What sort of a difference does that make? Quote Link to comment Share on other sites More sharing options...
Prospeeder Posted September 3, 2005 Report Share Posted September 3, 2005 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 Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted September 3, 2005 Report Share Posted September 3, 2005 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. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted September 3, 2005 Report Share Posted September 3, 2005 Oh, alright. Thank you 8) Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 3, 2005 Report Share Posted September 3, 2005 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. Quote Link to comment Share on other sites More sharing options...
slick Posted September 6, 2005 Report Share Posted September 6, 2005 So would a 3 wire O2 sensor be that beneficial on a N/A vehicle then? Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted September 6, 2005 Report Share Posted September 6, 2005 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. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 6, 2005 Report Share Posted September 6, 2005 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. Quote Link to comment Share on other sites More sharing options...
slick Posted September 6, 2005 Report Share Posted September 6, 2005 So basically, it just gives a more accurate reading when the engine temps are still cold for less fuel consumption then, correct? Quote Link to comment Share on other sites More sharing options...
Garrett Powered Posted September 6, 2005 Report Share Posted September 6, 2005 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? Quote Link to comment Share on other sites More sharing options...
slick Posted September 6, 2005 Report Share Posted September 6, 2005 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. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 6, 2005 Report Share Posted September 6, 2005 beware though, i think the oil from your hands can contaminate the O2 sensor element. Quote Link to comment Share on other sites More sharing options...
TurboGTU Posted September 7, 2005 Report Share Posted September 7, 2005 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. Quote Link to comment Share on other sites More sharing options...
SleeperRed90TGp Posted September 14, 2005 Report Share Posted September 14, 2005 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 Quote Link to comment Share on other sites More sharing options...
SleeperRed90TGp Posted September 14, 2005 Report Share Posted September 14, 2005 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 Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted September 14, 2005 Report Share Posted September 14, 2005 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. Quote Link to comment Share on other sites More sharing options...
maybe2fast Posted November 30, 2005 Report Share Posted November 30, 2005 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. Quote Link to comment Share on other sites More sharing options...
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