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While getting my annual inspection last year my O2 Sensors failed the emissions tests and needing replacing. Same thing has happened again this year too! Is this common for O2 Sensors to go out that often? At over $300 to replace it's rather frustrating and costly.

2007-01-30 03:29:58 · 3 answers · asked by noahmitchell 2 in Cars & Transportation Maintenance & Repairs

I've never used any anti-seize thread lubes that contain Silicone OR any fuel additives.

I definetely consider myself handy but am not very automtive knowledgable. How difficlut is it to replace Oxygen Sensors yourself?

2007-01-30 08:48:22 · update #1

3 answers

A lot of times the sensor isn't bad, but the connector is. The computer just sees high voltage in the circuit and gives you the code.
And don't add any of that miracle gunk to your gas.

2007-01-30 09:46:39 · answer #1 · answered by Nomadd 7 · 0 0

No it is not common, most O2 sensors last 100k miles.
I'm not sure what you mean by your O2 sensor failed the emissions test.
They tested your sensors?
Some times a sensor can become contaminated from using certain sealing compounds on the threads.
Some fuel additives can do this also if used excessively.
I have a truck that burns oil like Exxon leaks it and the O2 sensor is just fine.

2007-01-30 12:49:19 · answer #2 · answered by Anonymous · 0 0

They can get ruined by products that contain Silicone. So if someone had been careless and dropped a fuel injector o-ring (seal) into your engine, that might be a rogue source. Also certain anti-seize thread lubes can contain Silicone.

Here's a great link that gives you average life expectancies depending on the age of your car and the type it has. Also discusses some of the points I made...

http://www.autohausaz.com/html/emissions-oxygen_sensors.html

2007-01-30 12:56:56 · answer #3 · answered by KirksWorld 5 · 0 0

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