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1985 v8 5.0 305 firebird o2 sensor?

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Old 08-28-2023, 06:19 PM
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1985 v8 5.0 305 firebird o2 sensor?

How many sensors do I have? And locations? I have a 5.0 305 carb engine. Having trouble figuring it out
Old 08-28-2023, 07:36 PM
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: 1985 v8 5.0 305 firebird o2 sensor?

1. Drivers side exhaust manifold.
Old 08-29-2023, 12:21 AM
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Re: 1985 v8 5.0 305 firebird o2 sensor?

Originally Posted by aliceempire
1. Drivers side exhaust manifold.
it only has 1???
Old 08-29-2023, 06:17 AM
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Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: 1985 v8 5.0 305 firebird o2 sensor?

Obd1. Only needed o2 readings for feedback on closed loop fueling. Sounds counterproductive because if the passenger side bank had a problem, the o2 sensor wouldn't see that but that's just how it was.
Old 08-29-2023, 09:59 AM
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Re: 1985 v8 5.0 305 firebird o2 sensor?

Yup, just the one.

The ECM in these cars barely has enough nads to keep up with the output of one; trying to monitor 2 at the same time would probably cause it to melt down. After all, remember back to what you watched TikTok on back in 1983 or so, when that ECM was being developed... I'm guessing you might have thought at the time that the video was a little bit jerky.
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