Re: P1131 98' taurus
"Jim Warman" <email@example.com> wrote in message
> Curious.... in all these years I have yet to replace more than a handful
> O2 sensors.... I had a 4.6 F150 last month... had a bad heater.... all the
> other O2s looked good..... and only 400,000 and some kilometers on it.
> Back when these things were in their infancy, many manufacturers suggested
> replacement interval for these sensors. Technology has come a long way
> in all honesty, O2 sensor codes are, for the most part, symptoms of
> problem. I can't understand how some DIYers see the need replace more O2
> sensors than techs in the field.
They replace them because they think it will fix the car I guess. But don't
be fooled by a lack of codes, O2s can be "lazy" or worn, or covered in so
much mud and tar and such that it can't breath well. At least that's what
they taught me in grease monkey school:) You have never had a ford with a
sequential injection idle rough because of a lazy O2 on one side? I have. I
also like to check them with the scan tool to see if they don't hit damn
near 1 volt at WOT. I do agree they get changed for other reasons that they
never fix though. Like O2 codes from low fuel pressure.