I heard from a mechanic that the ethanol in the gas is causing them to
fail early. Mine both show that they are running lean.
Quoting Malibu <[EMAIL PROTECTED]>:
I thought these sensors were part of the emission control system and
were warranted for 100,000 miles. My "check engine" just came on in my
Blazer with 27,000 miles on it. I found 2 sites that talk about testing
and repairing. If their not warranted, I sure don't want to go to the
dealer and get ripped. I'll try and check it myself.
http://www.bobblick.com/techref/projects/o2sensor/o2sensor.html
http://www.unofficialbmw.com/all/engine/all_o2sensor.html
