who all has switch from a single o2 wire to a three wire
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Joined: Jun 2011
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From: semo
Car: 89 iroc z
Engine: 353tpi
Transmission: 700 r4
Axle/Gears: 342
who all has switch from a single o2 wire to a three wire
I installed a 3 wire o2 sensor and now my check engine light is on and its my o2 sensor hooked the black wire up to the ground and the white wire to a 12volt when the key is on and the other white wire up to the o2 wire from the harnest I'm missing something or did I hook it up right thanks
Joined: Mar 2000
Posts: 5,703
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From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
Re: who all has switch from a single o2 wire to a three wire
The two whites are power and gnd,
Black is the 02
Black is the 02
Joined: Sep 2003
Posts: 25,895
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: who all has switch from a single o2 wire to a three wire
Sounds about right. Its been years since i ran mine but used it for long tube headers. Had 12 v wire tied into fuel pump harness as its on when engine runs. Ground and sensor wires spliced in. Never had an issue with engine codes. Dont recalll the color of the wires but Don sounds right. Try changing yours
Joined: Dec 2004
Posts: 16,752
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: who all has switch from a single o2 wire to a three wire
Here is a harness I made for a friend to plug into a afs-74 for you to see the orientation
Joined: Sep 2000
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From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
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Re: who all has switch from a single o2 wire to a three wire
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