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donuteater306
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FEB 17, 03:53 AM
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Which O2 sensor are we using these days for the 2.8? Options are:
Delco AFS21
Delco AFS22 not sure what the difference between 21 and 22 are.
Denso 234-1001
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theogre
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FEB 17, 11:23 AM
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2 PN same vendor is likely because Some are "universal" ones w/o connector. Avoid them. I'm not digging thru your PN to find that data.
I use Bosch or ACDelco w/ the connector for GM "1 wire" O2.
Make sure All "Grounds" bolted to engine/trans are good.
Tan wire is a fake ground for O2 and dirty/bad will cause O2 problems.
Same type fake ground in my Cave, Ground "Myth" notes------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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donuteater306
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FEB 17, 12:30 PM
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Thanks. Looks like they're both single wire with the connector however, AFS22 has the purple wire. Anyway, couldn't find the AFS22 on Rock or Amazon so I went with the Denso brand.
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ArthurPeale
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AUG 27, 02:34 PM
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How are the Delphi sensors?
I used a Denso sensor on my SE, but with my GT I have a line on a good deal on a Delphi
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RWDPLZ
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AUG 27, 02:55 PM
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Haven't tried the Delco, but the last 10 years or so, anything AC Delco is just re-boxed another brand, sometimes blatantly so.
Had good luck with the Denso ones.
Bosch 1-wire O2 sensors are garbage.
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ZaraSpOOk
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SEP 01, 05:15 PM
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I too looked for an AFS22 but found the 21 at a good price and went with that for my 88 V6 and it works fine
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ArthurPeale
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JUN 10, 01:16 PM
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| quote | Originally posted by RWDPLZ:
Had good luck with the Denso ones.
Bosch 1-wire O2 sensors are garbage. |
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Last O2 sensor I got was Denso. I'm pleased with it.
what's bad about the Bosch ones?
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fierofool
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JUN 11, 08:06 PM
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| quote | Originally posted by ArthurPeale:
Last O2 sensor I got was Denso. I'm pleased with it.
what's bad about the Bosch ones? |
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I just installed a new Bosch sensor last week. I keep getting a lean code. Today a real-time scan showed the sensor was all over the place but after about 4 miles, it leveled out. Going to replace it with an NTK as someone local recommended to see if that fixes the problem.
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Dennis LaGrua
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JUN 18, 03:29 PM
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| quote | Originally posted by fierofool:
I just installed a new Bosch sensor last week. I keep getting a lean code. Today a real-time scan showed the sensor was all over the place but after about 4 miles, it leveled out. Going to replace it with an NTK as someone local recommended to see if that fixes the problem.
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It usually takes about 30 minutes of mixed driving for the ECM to relearn/reset the fueling, especially when the battery is disconnected and reattached. The only O2 sensor that has performed well on my vehicles has been the Denso 234-1001 brand formally sold under the AC Delco name. I could not find it listed anymore so it may be discontinued. Today AC Delco is just a box that contains a "guess who" lowest bidder brand. As for the Bosch we did some tests a while back and found that the sensor response speed was poor when compared to Denso.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 06-20-2022).]
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ArthurPeale
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JUN 21, 02:10 PM
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