On Apr 2, 9:01=A0pm, "davejohan...@[EMAIL PROTECTED]
" <davejohan...@[EMAIL PROTECTED]
>
wrote:
> On Apr 2, 3:18=A0am, Toolz <jlsw...@[EMAIL PROTECTED]
> wrote:
>
>
>
>
>
> > 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
c=
ode
> > > >>> is P0420 (Three Way Catalyst Function). I took it to the dealer
an=
d
> > > >>> 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
s=
eems
> > > >>> 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
sens=
or
> > > >> 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'
c=
ash,
> > > >> 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 =
think,- 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
>
> What did you do with the can of contact cleaner to fix the problem?
> Dave- Hide quoted text -
>
> - Show quoted text -
Dave,
You clean the plug in fittings on the end of your O2 sensor. Look to
see that there is a tight fit and that there is no corrosion
interfering with the contact. If so you need to get that cleaned out
or fitting tight.
John
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