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Old 03-09-2008, 08:01 PM   #1
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Hey guys well I needed a new rear cat 02 sensor awhile ago and I didn't know then that Bosch is the worst brand of car parts for us bonneville owners. Now the SES light hasn't turned off since I put a new one in, so then some people on here told me its probably the Cat, well while I had it in the shop this week for eletrical issues I had him check my Cat as well and he said no its good don't change it...So I'm thinking its that damn rear o2 sensor again.

So I was wondering who sells non Bosch o2 sesnors?
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Old 03-09-2008, 08:04 PM   #2
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Try here, I just got one myself.

http://www.rockauto.com/catalog/raframecatalog.php?
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Old 03-09-2008, 08:36 PM   #3
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Thanks man!
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Old 03-09-2008, 08:43 PM   #4
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What'* the code that'* causing the CEL to come on?
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Old 03-10-2008, 02:08 PM   #5
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I'll look to see if I can find the thread I had awhile ago that had the code in it, if not I'll get autozone to scan it again for me
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Old 03-10-2008, 02:12 PM   #6
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Found it!

Code: P0420
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Old 03-10-2008, 09:07 PM   #7
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How did you determine it was the O2 rather than the cat itself?
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Old 03-10-2008, 11:46 PM   #8
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Cat was checked as stated above, plus will you told me it probably would be that cat on my other thread awhile ago, so I had my mechanic check it and he said its 100% fine...

So I figured it have to be the o2 again since its saying the rear cat o2 sensor...right?
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Old 03-10-2008, 11:50 PM   #9
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You should have asked this question in your other topic so we'd know the background on the problem.

Yes, the rear.
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Old 03-10-2008, 11:56 PM   #10
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I just got one from Rock Auto also. Best deal around. Check Chat sticky for discount code. It'll save you about 5%.
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