davejohansen@[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
think,
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