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post #1 of 7 (permalink) Old 08-08-2009, 02:15 PM Thread Starter
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o2 sensor?

i would like to know where my o2 sensor is on my 08 cobalt
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post #2 of 7 (permalink) Old 08-08-2009, 02:49 PM
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On ur dp.
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post #3 of 7 (permalink) Old 08-08-2009, 02:55 PM
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Originally Posted by Blunts n 40oz View Post
On ur dp.
Both of them...one before the cat (HO2S-1) and one after the cat (HO2S-2). they are both heated sensors to help the engine get into closed loop -- so the ECM can run off the sensors quicker...the 2nd one is used to analyse the cat's condition.

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post #4 of 7 (permalink) Old 08-08-2009, 03:20 PM
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post #5 of 7 (permalink) Old 08-08-2009, 04:40 PM
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post #6 of 7 (permalink) Old 08-08-2009, 05:21 PM
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post #7 of 7 (permalink) Old 08-09-2009, 08:51 PM
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Quote:
Originally Posted by Blunts n 40oz View Post
On ur dp.
Quote:
Originally Posted by Red07SSNA View Post
Both of them...one before the cat (HO2S-1) and one after the cat (HO2S-2). they are both heated sensors to help the engine get into closed loop -- so the ECM can run off the sensors quicker...the 2nd one is used to analyse the cat's condition.
On the 05/06, the first sensor is in the exhaust manifold 07+ has both sensors on the DP correct me if i'm wrong



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