On Mar 29, 8:05=A0pm, AZF <a...@[EMAIL PROTECTED]
> wrote:
> davejohan...@[EMAIL PROTECTED]
wrote:
> > On Mar 28, 1:45 pm, 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
>
> I took mine off...it wasn't that difficult, but it's not something I'd
> want to do on a cold windy day <g>. Chances are there's nothing in
> there...it would be awful hard for something to get stuck in there, I
thin=
k,- Hide quoted text -
>
> - Show quoted text -
I also had the same Diag. code come up on my 2001 Maxima 0420. Of
course dealer wanted to replace front pre-cat tube and both front
sensors for a whopping $2400 total bill with labor.
1 can of electrical contact cleaner took care of the problem if you
can beleive this one.
I am still planning on changing the O2 sensors up front just to safe.
I had to get the car through vechile inspection and the cleaner
worked.
John
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