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PT
Dodge Dakota
JOIN HERE
10/08/2002
17:13:40
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 Subject: 2000 4.7L Second O2 sensor?
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Message:
Can anyone answer a guestion about the sencond O2 sensor. The sensor behind the one and only cat on a 2000 4.7L.
Does this sensor effect the air fuel ratio? Or does the first O2 sensor only effect the air fuel ratio?
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PT
Dodge Dakota
JOIN HERE
10/11/2002
21:16:58
|  RE: 2000 4.7L Second O2 sensor?
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Message:
TTT
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slow2dak
Dodge Dakota
JOIN HERE
10/11/2002
21:30:29
| RE: 2000 4.7L Second O2 sensor?
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Message:
yes, the downstream 02 sensor reads the unburned hydrocarbons coming out of the cat. if you remove the cat normally it will set of the check engine light. when u remove the cat, all the unburned fuel goes right to the sensor and it reads a rich condition and the upstream 02 will try and compensate for that rich condition and cut back on the injector pulse width and slow down the fuel, which can result in a surging condition also.
mike
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PT
Dodge Dakota
JOIN HERE
10/11/2002
22:09:21
| RE: 2000 4.7L Second O2 sensor?
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Message:
Thanks i really appreciate the response.
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Clevite 77
GenIII
10/11/2002
22:29:54
| RE: 2000 4.7L Second O2 sensor?
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Message:
slow2dak, did a great job of explaing it, but if you want to remove it, you can go to speedtweaks.net and pic up 1 o2 Sim. what this does is it plugs into where the o2 sensor plugs into the harness, and tricks the computer into thinking the cat is doing it's job.
You'll only need one and it goes where the last o2 sensor is.
go to speedtweaks.net e-mail Bernd and I'm sure he'll be more than happy to help you out.
Line-X Over The Rail Bed Liner
Home Brew Intake
Dual Exhaust
3923 Autolite Plugs
Krypton 4300K Blue/Whites
Euro Clear Corners
Grille-Tech Grill Insert (Silver)
TPS Set At .705
Removed Rubber Flap
I've used Mobil -1 Full Synthetic Oil And Filter Since I Had 6,000 miles
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PT
Dodge Dakota
JOIN HERE
10/12/2002
16:54:05
| RE: 2000 4.7L Second O2 sensor?
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Message:
I want to remove it but i'm getting a kenne bell in March. If it will affect air fuel then I wont touch it. I dont want to get any "issues" with there tuning. I know about the cat box but I dont want to mess anything up.
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dan matheny
Dodge Dakota
JOIN HERE
7/25/2012
19:00:09
| RE: 2000 4.7L Second O2 sensor?
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Message:
my 2000 dakota does NOT have a o2 sensor after cat
converter but have 1 on passenger side y pipe high
and one where the y pipes come together. any ideas?
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