can a o2 sensor make your car stall ? ( yes ) - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-10-2006, 12:08 PM   #1
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Default can a o2 sensor make your car stall ? ( yes )

Ever heard of this one, i live in a very small town about 50 miles from a dealer and nobody around here can read a 1995 bonneville. I bought an o2 sensor from autozone , the reason i did was i need to get my mpg up , it has been going down. I installed the sensor and the car runs fine till it gets warm , then it will stall out when ever you stop at a red light or to turn. Check engine light does come on but i have no idea what codes it is setting. I can unplug the o2 sensor and it runs just fine, I have never heard of a o2 making a car stall. 1995 bonneville se
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Old 02-10-2006, 12:10 PM   #2
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bosch sensor?
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Old 02-10-2006, 12:11 PM   #3
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You got a Bosch O2 from Autozone, didn't you. I can't even BEGIN to count the number of Bosch O2'* that have caused problems in Bonnevilles.

Get an AC Delco sensor. However, I don't really see how a bad sensor would stall you. Your car will run with it disconnected.
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Old 02-10-2006, 12:12 PM   #4
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I'd reccomend to you if you can wait www.rockauto.com for the AC Delco O2 sensor. It was I think 47 shipped.
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Old 02-10-2006, 12:16 PM   #5
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Well, theoretically it could cause a stall if it were sending out bad feedback signals, right?

If it were giving a false read, then it could be causing an adjustment that starved the engine of fuel, no? Just speculating here.
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Old 02-10-2006, 12:18 PM   #6
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Quote:
Originally Posted by lash
Well, theoretically it could cause a stall if it were sending out bad feedback signals, right?

If it were giving a false read, then it could be causing an adjustment that starved the engine of fuel, no? Just speculating here.
I guess in theroy that could be a possibiliy... If the O2 gave no signal at all the SES should come on... But even then the PCM would run off of a default... Assuming that the O2 can go bad and cause the car to run ultra rich as the sensor is telling the PCM its lean when it isn't... It could be possible for the sensor to tell the PCM thats its pure rich when it actually isnt...

I have never seen or heard of this type of failure with an AC Delco unit...

We have had too many issues with Bosch O2'* tho..

Id say if unplugging it completely solved the stalling issues, replace the O2 with a Delco Unit and see if the issues return..

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Old 02-10-2006, 12:28 PM   #7
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Sorry i got it at advance auto not autozone and it was a standard.
Has any body ever heard of one making your car stall like mine,
i'm wondering if they didnt have the plug wired wrong.

Yes when I unplug it , not a problem one untill i plug it back up and it gets warm.
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Old 02-10-2006, 01:19 PM   #8
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Quote:
Originally Posted by kw6977
Sorry i got it at advance auto not autozone and it was a standard.
Has any body ever heard of one making your car stall like mine,
i'm wondering if they didnt have the plug wired wrong.

Yes when I unplug it , not a problem one untill i plug it back up and it gets warm.
I have never heard of that happening... This is a first for the books...

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Old 02-10-2006, 01:24 PM   #9
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Despite all our speculation as to reasons, the fact remains that your O2 sensor is obviously bad. You should return that one and get an AC Delco as mentioned above.
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Old 02-10-2006, 01:29 PM   #10
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Quote:
Originally Posted by lash
Despite all our speculation as to reasons, the fact remains that your O2 sensor is obviously bad. You should return that one and get an AC Delco as mentioned above.
Agreed... I think in all of the time we have been dealing with this site, we have only seen 1 AC Delco that was bad out of the box... And even that in its self is extremely rare

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