On Mar 28, 1:45=A0pm, AZF <a...@[EMAIL PROTECTED]
> wrote:
> davejohan...@[EMAIL PROTECTED]
wrote:
> > The check engine light in our 2001 Nissan Maxima came on and the code
> > is P0420 (Three Way Catalyst Function). I took it to the dealer and
> > they said that the ECU is up to date (so no reprogram is necessary)
> > and that the upstream O2 Sensor and the front exhaust tube need to be
> > changed. They said that it would be $1400 to have it done (which seems
> > like a lot). I'm fine with changing the O2 Sensor myself, but do I
> > really need to have the tube changed too? If so, is it something I
> > could do myself and how much should I expect to pay for the part?
> > Thanks,
> > Dave
>
> Hey, Dave,
>
> I had the same problem, and I was told that once I replace the sensor
> and check that there are no obstructions in the exhaust tube -- if it's
> the front and something did get in there, you have bigger problems <g> -
> - all should be good. I changed the sensor myself, saved a wad o' cash,
> and i am even getting better gas mileage.
>
> Good luck,
> Z
How do I check if there's something in the exhaust tube? Can I just
take it off and look in it? Or is there a better way?
Thanks,
Dave
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