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post #1 of 8 (permalink) Old 01-24-2014, 12:18 PM Thread Starter
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Denso 234 4342

Is this going to be an acceptable o2 sensor replacement for a 2006 cobalt 4c 2.2l 126k miles? Seems in town my options are boach, denso, and acdelco which is 130$(over twice the others).
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post #2 of 8 (permalink) Old 01-24-2014, 01:39 PM
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Upstream or downstream? You are not looking the right places if youre finding oem for 130

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post #3 of 8 (permalink) Old 01-24-2014, 02:12 PM Thread Starter
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Upstream. It sounded high but he was the only place i town that sells acdelco
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post #4 of 8 (permalink) Old 01-24-2014, 02:46 PM
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I'm afraid 05-06 pre-cat OČ are a bit pricey, they will run you close to $100 +/-$20 for an AC Delco. I believe the number to be 12580827 for the 2.2l auto

---------- Post added at 06:46 PM ---------- Previous post was at 06:41 PM ----------

12580827 - GM SENSOR

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post #5 of 8 (permalink) Old 01-24-2014, 02:55 PM Thread Starter
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I'm afraid 05-06 pre-cat OČ are a bit pricey, they will run you close to $100 +/-$20 for an AC Delco. I believe the number to be 12580827 for the 2.2l auto

---------- Post added at 06:46 PM ---------- Previous post was at 06:41 PM ----------

12580827 - GM SENSOR
Am I going to be okay /w the Denso I purchased? I'm by no means a gear head. The guy that does all the mechanical work on our forklifts at work is doing this for me tomorrow and I don't want to show up and this won't work while making him wait for me to get a new one. I really want that annyoing CEL gone.
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post #6 of 8 (permalink) Old 01-24-2014, 03:09 PM
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What was your code? Denso will work, they have not been as reliable as OEM, as long as you stayed away from Bosch.

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post #7 of 8 (permalink) Old 01-24-2014, 03:16 PM Thread Starter
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What was your code? Denso will work, they have not been as reliable as OEM, as long as you stayed away from Bosch.
Code was p0133
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post #8 of 8 (permalink) Old 01-24-2014, 03:32 PM
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DTC P0133
Circuit Description
Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The powertrain control module (PCM) supplies the HO2S with a reference, or bias, voltage of about 450 mV. When the engine is first started the PCM operates in open loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperatures and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust stream.

This diagnostic will only run once per ignition cycle. The PCM monitors the rich-to-lean and lean-to-rich transition time. A transition is defined as the HO2S voltage changes from above 650 mV to below 450 mV or from below 450 mV to above 650 mV. If the PCM detects that the transition time is too long, DTC P0133 will set.

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