Will any of these o2 sensors work?
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Will any of these o2 sensors work?
Hi everyone, I have an 89 350 tuned port with headers and a one wire o2 sensor causing problems. Trying to switch to a heated 4 wire o2 sensor and save a few bucks by getting a used one. Got 6 different o2 sensors from the junkyard today.
I think I was told I need an AFS74. One of the threads I searched on said that can be found in a 95 s-10. I took a couple out of 95's, 96's, and 2 real nice ones out of a 98. Are these all the same?
The best I can tell they have numbers as follows....
AFS 75 ( out of a 95 s-10)
AFS 75 (out of a 95 s-10)
AFS 105 ( out of a 96 s-10 I think)
AFS 105 ( out of a 96 s-10 I think)
Then the 2 REAL nice new looking ones I got out of the 98 don't have an AFS #, they just have some long part number on them....
1rst one is...... 0 258 005 703 5902631 12V 982
2nd one is...... 0 258 005 703 104132 12V 982
Can anyone tell me if any or all of these will work since none of them say AFS 74?
Anyone who may know and could tell me would be greatly appreciated. Thanks
I think I was told I need an AFS74. One of the threads I searched on said that can be found in a 95 s-10. I took a couple out of 95's, 96's, and 2 real nice ones out of a 98. Are these all the same?
The best I can tell they have numbers as follows....
AFS 75 ( out of a 95 s-10)
AFS 75 (out of a 95 s-10)
AFS 105 ( out of a 96 s-10 I think)
AFS 105 ( out of a 96 s-10 I think)
Then the 2 REAL nice new looking ones I got out of the 98 don't have an AFS #, they just have some long part number on them....
1rst one is...... 0 258 005 703 5902631 12V 982
2nd one is...... 0 258 005 703 104132 12V 982
Can anyone tell me if any or all of these will work since none of them say AFS 74?
Anyone who may know and could tell me would be greatly appreciated. Thanks
#2
Re: Will any of these o2 sensors work?
I think that bosch 0 258 005 703 is the same as a afs-75 4 wire
https://www.thirdgen.org/forums/elec...-how-do-i.html
https://www.thirdgen.org/forums/elec...-how-do-i.html
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
I think that bosch 0 258 005 703 is the same as a afs-75 4 wire
https://www.thirdgen.org/forums/elec...-how-do-i.html
https://www.thirdgen.org/forums/elec...-how-do-i.html
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
sounds good!
Now on the wiring.....
I copied and pasted the following..
A pigtail to connect the stock o2 is easy to build with packard connecters from mouser.com. You can hook the ground to a bell housing bolt the purple signal wires connect together and the accessory hot can be hooked to the cooling fan relay. Jims performance.com has the pigtail for I believe $20 amazon always has good pricing on the afs-74.
Now, I'm trying to use the newest Bosch o2 sensor that has 2 white wires, a black wire, and a grey wire. Is it safe to assume I should connect the 2 white wires to my old o2 wire, the black to ground, and the grey to 12v ignition source?
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Car: 91 formula ws6
Engine: 355 tpi OBDII
Transmission: 4l60E
Axle/Gears: 2.73 with 4th gen brakes
Re: Will any of these o2 sensors work?
grey is the signal. the whites are both for the heater iirc. black is the sensor ground iirc
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
So am I just driving around in open loop with it hooked up wrong?
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
BUT.......
2 posts before that I'm told by someone the grey is signal.
Should I go with the diagram for the 4 wire option a?
Right now off the diagram I'm thinking the following...
White = 12v
White = 12v
Black = signal
Grey = ground
Can somebody confirm?
Last edited by gbettner; 07-29-2013 at 09:03 PM.
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Car: 91 formula ws6
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Re: Will any of these o2 sensors work?
tp knows better then me. i havent wired one up in 4 months so it isnt fresh. i just remember white is the heater circuit. it was in open loop.
one white is 12v+ and one white is 12v-. doesnt matter which is which.
one white is 12v+ and one white is 12v-. doesnt matter which is which.
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
Well I'm going to guess since I grounded my black wire originally and didn't have a CEL that it must be the sensor wire and grounding it just fooled the computer into thinking it was hooked up. I'll wire off the diagram tonight and also ground one of the whites this time and let you guys know what happens. Thanks!
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
Well I'm going to guess since I grounded my black wire originally and didn't have a CEL that it must be the sensor wire and grounding it just fooled the computer into thinking it was hooked up. I'll wire off the diagram tonight and also ground one of the whites this time and let you guys know what happens. Thanks!
I tried the black wire to signal and grey wire to ground and it acted the same, still sets code 13.
So I switched the wires ( black to ground and grey to signal) and still acted the same way. Set code 13 again after driving for a little bit.
Unrelated but my speedometer cable must have broke. Now I'm showing codes 13 , 24 , and 34 whatever those are. Suppose they are speed sensor related.
I'm gettin aggrevated.
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
Well I got the heat wires right ( the 2 whites) because it gets hot now if you hold it in your hand with ignition on.
I tried the black wire to signal and grey wire to ground and it acted the same, still sets code 13.
So I switched the wires ( black to ground and grey to signal) and still acted the same way. Set code 13 again after driving for a little bit.
Unrelated but my speedometer cable must have broke. Now I'm showing codes 13 , 24 , and 34 whatever those are. Suppose they are speed sensor related.
I'm gettin aggrevated.
I tried the black wire to signal and grey wire to ground and it acted the same, still sets code 13.
So I switched the wires ( black to ground and grey to signal) and still acted the same way. Set code 13 again after driving for a little bit.
Unrelated but my speedometer cable must have broke. Now I'm showing codes 13 , 24 , and 34 whatever those are. Suppose they are speed sensor related.
I'm gettin aggrevated.
Any ideas on what I should do? Either I messed up my computer by hooking something up wrong or o2 sensor not compatable?
Any thoughts would be appreciated.
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
I wandered the same thing so I put another new looking Bosch in there but can't remember which way I had the remaining 2 wires hooked up before test driving and switching again. I'll try one of the older AFS-75 sensors when I get home, if it still does it I'll switch the 2 wires in question ( since I know the heater is working with the other 2 wires), then put another AFS-75 sensor in and try again. That should fix it or eliminate the possibility assuming all the used o2 sensors I ended up with are good.
I might try the volt meter idea too and see what kind of voltage I'm getting.
Thanks
I might try the volt meter idea too and see what kind of voltage I'm getting.
Thanks
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
I wandered the same thing so I put another new looking Bosch in there but can't remember which way I had the remaining 2 wires hooked up before test driving and switching again. I'll try one of the older AFS-75 sensors when I get home, if it still does it I'll switch the 2 wires in question ( since I know the heater is working with the other 2 wires), then put another AFS-75 sensor in and try again. That should fix it or eliminate the possibility assuming all the used o2 sensors I ended up with are good.
I might try the volt meter idea too and see what kind of voltage I'm getting.
Thanks
I might try the volt meter idea too and see what kind of voltage I'm getting.
Thanks
Well I tried a stock AFS 75 with the 2 possible wires wired both ways and both times it set a code 13.I tried figuring out the volt meter but I'll have to wait for my son to get home since he had a college class on auto electrical. I'm guessing "vom" means voltmeter and "mv scale" means millivolts.
I read the signal volts I think from the o2 and it seemed to be right at about 4.00 for a couple minutes then started going haywire. ( jumping around to 6-9-12-14-16-15-10-16-etc.... for example. I probably did something wrong. I had multimeter set likeI would if I was reading alternator output.
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Car: 89 Iroc, saved from scrapyard
Engine: 350 vortec w/stealth ram
Transmission: 85 corvette 700r4
Axle/Gears: 3.73 posi
Re: Will any of these o2 sensors work?
Well I tried a stock AFS 75 with the 2 possible wires wired both ways and both times it set a code 13.I tried figuring out the volt meter but I'll have to wait for my son to get home since he had a college class on auto electrical. I'm guessing "vom" means voltmeter and "mv scale" means millivolts.
I read the signal volts I think from the o2 and it seemed to be right at about 4.00 for a couple minutes then started going haywire. ( jumping around to 6-9-12-14-16-15-10-16-etc.... for example. I probably did something wrong. I had multimeter set likeI would if I was reading alternator output.
I read the signal volts I think from the o2 and it seemed to be right at about 4.00 for a couple minutes then started going haywire. ( jumping around to 6-9-12-14-16-15-10-16-etc.... for example. I probably did something wrong. I had multimeter set likeI would if I was reading alternator output.
I'm trying to get set up with an aldl cable and software soon but for now I have to work with what I got.
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