View Single Post
Old 08-28-2009, 02:33 PM   #21
Scooby Specialist
Member#: 128537
Join Date: Oct 2006
Chapter/Region: MWSOC
Location: Bloomington, Indiana
2004 Baja Turbo


Originally Posted by Cooter13 View Post
Could it be that manufacturers know that this part is prone to failure within a short period of time, compared to other components of the emissions?
As I stated previously, I'm on 138k miles now on factory original O2 sensors - no fault yet.

Originally Posted by Cooter13 View Post
Does anyone know why the O2 sensor fails? Is it the gas, poor air filter, climate, or just because it is an expensive part that is hard to replace, aka who the halibut knows.
Yes to all mentioned above. Some sensors, depending on their operating environments, will be prone to pre-mature failure.

In my opinion, unless you're engine is running way out of spec (burning oil, burning rich, burning coolant) your O2 sensor should last AT LEAST 60k miles.
* Registered users of the site do not see these ads.
moonzie is offline   Reply With Quote