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O2 question...Bank 1, Sensor 2?

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Old 08-14-2007, 01:39 AM
bluestraw
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Default O2 question...Bank 1, Sensor 2?

Hello all,

2001 Dodge 2500 3.9 Auto

O2 error code:

Bank 1 , Sensor 2

Now my question is........ Which of my 3 is it? The parts stores wont give me an absolute answer.

Thanks
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Old 08-14-2007, 08:20 PM
rabbler
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Default RE: O2 question...Bank 1, Sensor 2?

sensor 2 should be behind (after) the converter.
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Old 08-14-2007, 09:49 PM
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Default RE: O2 question...Bank 1, Sensor 2?

yep. sensor 2 is post cat. sensor 1 is before cat.
how many sensors does your truck have ? 3? hmm. i thought it was either 2 or 4.

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Old 08-14-2007, 10:11 PM
bluestraw
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Default RE: O2 question...Bank 1, Sensor 2?

Not sure which parts store told me that, but said I had 2 up & 1 down. They were pretty sure it was the back one, but would not guarantee it. I believe the rear sensor cost more as well.
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Old 08-14-2007, 10:23 PM
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Default RE: O2 question...Bank 1, Sensor 2?

2500 with a 3.9 ? bank 1 sensor 2 is the last one.... got bank 1 bank 2 ( right, left ).. i think those have 3 cats ? or 2 cats after the header then a resenator
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Old 08-15-2007, 12:05 AM
bluestraw
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Default RE: O2 question...Bank 1, Sensor 2?

Whoops!

5.9
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Old 08-15-2007, 02:32 AM
mopowar
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Default RE: O2 question...Bank 1, Sensor 2?

Are you sure you have three sensors? Usually you would have two or four.
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Old 08-15-2007, 11:29 AM
bluestraw
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Default RE: O2 question...Bank 1, Sensor 2?

No, will take a looksee later this afternoon.
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Old 08-16-2007, 08:32 AM
bluestraw
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Default RE: O2 question...Bank 1, Sensor 2?

Okay, I went under to change the ABS speed thingy to try & fixmy 'ABS/brake' trouble light issue. Problems there that will need its own post.

Anyway, my Dodge has 2 O2 sensors, one up and one down. From the looks of it, I'm thinking WD-40 to loosen it up?
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Old 08-16-2007, 08:37 AM
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Default RE: O2 question...Bank 1, Sensor 2?

Quote:
ORIGINAL: bluestraw

Okay, I went under to change the ABS speed thingy to try & fixmy 'ABS/brake' trouble light issue. Problems there that will need its own post.

Anyway, my Dodge has 2 O2 sensors, one up and one down. From the looks of it, I'm thinking WD-40 to loosen it up?
wd-40 works but the best product for lossening bolts (or O2 sencsors in this case) is PB Blaster. every garage should have a can.
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