Quote:
Originally posted by russellcframe
Sounds like a pretty good price.
Can you answer my question about "why" someone should change it in the first place?
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I replaced mine because it made my check engine light come on at about 81K mi. At that point it began to run real rough and hesitated quite a bit. I think (guessing here) when the O2 sensor is out of spec, the ECU just disregards the signal and relies on the MAF, TPS and the preprogrammed fuel curve in the Eprom chip. The lack of an O2 signal just doesn't give the ECU a feedback to correct for.
It is also the main reason why I have my OBD II code reader from
www.Auterraweb.com .....I love it!
After replacing it my truck runs ike a million bucks again, but mine was bad enuf to set off the engine light tho.