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Need 3 wire heated O2

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Old Mar 20, 2002 | 09:40 AM
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From: NC
Car: 1987 Iroc
Engine: 357 Single plane and a Ysi vortech
Transmission: T56
Axle/Gears: 3.50 9"
Need 3 wire heated O2

Just wondering is there a certain part number or car I should get one for. The car will have Hooker long tubes so I should go ahead and get one.

Thanks

Chris
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Old Mar 20, 2002 | 10:32 AM
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Some people have recommended :

AC DELCO AFS74 1995 CHEVROLET S10 PICKUP V6 4.3L 262cid GAS FI N Engine VIN = Z

I just got one from Rock Auto Parts (do a web search for prices) but I haven't installed it yet.
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Old Mar 20, 2002 | 10:33 AM
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u r sofa king we tah did's Avatar
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From: texas
or a o2 sensor from a 1990 ZR1 corvette is a 3 wire
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Old Mar 20, 2002 | 11:19 AM
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by u r sofa king we tah did
or a o2 sensor from a 1990 ZR1 corvette is a 3 wire
That's what I asked for at the GM counter, and considering that they had it in stock and I don't think my dealership has ever SEEN a ZR1 (nevermind sold one), I'm guessing it's a very popular part number.
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Old Mar 20, 2002 | 01:16 PM
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From: Lower Salford, PA
Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
25176708 is the PN for the LT5 Vette, it also fits 93 GM W bodies.
AC-Delco # AFS74 is half the price, though. The GM long# is 25312179. This is used in 94-95 GM Light Trucks.
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Old Mar 20, 2002 | 08:01 PM
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From: NC
Car: 1987 Iroc
Engine: 357 Single plane and a Ysi vortech
Transmission: T56
Axle/Gears: 3.50 9"
Thanks for all the help guys

Chris
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Old Mar 28, 2002 | 04:18 PM
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From: NC
Car: 1987 Iroc
Engine: 357 Single plane and a Ysi vortech
Transmission: T56
Axle/Gears: 3.50 9"
Hey everyone. I got the O2 today and it has 3 wires and a plug. One purple and two brown. I know that the purple goes to the )2 wire, but does it matter which of the brown wires is negeative or ignition. did yall get a plug that will fit into the plug they give you or just cut the wires?

Thanks

Chris

:hail: TPI
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Old Mar 28, 2002 | 06:42 PM
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When I wired mine I soildered in a hot lead from the fuel pump relay, its in a convient location for this and can hadle the extra load. I used a two wire water proof connector with a waterproof fuse case on the hot side. These were both got at radio shack for a couple of bucks. And no, it doesn't matter which lead you use for hot, GM's normally pretty good about that stuff.

:lala:
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Old Mar 28, 2002 | 08:50 PM
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Jegs sells a 3 terminal weather pack that mates to the AFS74 (plus other stuff I think).
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Old Mar 29, 2002 | 12:41 AM
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From: Cherry Hill, NJ
Car: 92 Trans Am 'Vert
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Transmission: 5 Speed
So, what are the benefits of running one of these sensors as opposed to factory? I have heard some discussions about em, but Im still not very clear. Thanks guys!
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