O2 sensor problems

#11

pilate wrote:

Quote:

The cat's were OEM but this problem first came up before the cat's went
bad. I had a coil go bad and it took the mechanic longer then I would
have hoped to fix it. By the time it was fixed, the cat's were blown.
But like I said this O2 sensor problem came up before the blow cat.

What I've seen is you can get a false "bad rear O2 sensor" if the cat isn't
doing it's job. These computers aren't perfect!

Quote:

As far as gas, I guess that could be a problem. I just use regular.

Yep, that's a bad idea on these cars. It causes the timing to be retarded
ALL the time which makes the cats run much hotter than normal. WHile they
say "It's OK" it's not good for the car. Also seen problems with certain
brands (cheap?) like QT etc causing weird problems like this. Clear the
codes and switch to a quality mid grade and see what happens..

--

Steve

http://www.atlantaracing.com

#12

nothing wrong with the sensor,,you need the software updated, and it
should be covered under the emmissions warrantee,,,

Mine started doing the same thing,,software update fixed it

"pilate" <tisystems (AT) comcast (DOT) net> wrote:

Quote:

The code I'm getting is P0420.
I'm pretty sure the O2 sensor that has been used is the correct one. I
went to the dealer and gave them the VIN. That's when they informed me
that my car was california emmisions.
When I bought this car used the dealer(not a nissan dealer) had
informed me that he'd just replaced the O2 sensor himself. A week after
I bought the car they check engine light came on again. I took it back
to where I bought it and he replaced the sensor again.
Later the light came on again. I had since moved away and cash was low
after taking the car to Autozone and finding out it was the O2 sensor
again, I waited. Just about a year later that sensor got replace. This
time I went directly to the dealer and got the part as I mentioned
before.
I've been reading around this group and noticed some folks that had to
get their software updated in the 2000 models. Perhaps this is my
problem?

#13

RoadofResistance wrote:

Quote:

gas your using is damaging the sensor's
Just general gritching here -

I had an 84 Max wagon - console fell apart & I passed it on the my kids
to learn to drive on. Then we sold it to their friend several years
ago. It's still wandering around the country just fine.
Daughter 1 then got an 84 Max sedan. She drove it to 260k with no
major problems. But we thought she needed something better for, say,
D.C. Got her a 99 Max. She started driving it a few months ago.
Check engine light has been on ever since. Just yesterday she found
out her gas mileage has dropped to 18 from a consistent 32. We can't
get it in to be tested until Dec. 12.
Daughter 2 acquired a 91 Accord, drove it to 260 k. We upgraded her to
a 98 Max. w/ about the same 80 k on the engine. Her Accord looks
great, but mechanically it's dead. The 84 Max looks like death warmed
over, but ran w/o a hitch, hence the interest in Maximas. D-2 just had
NAPA replace an O2 sensor in Cal. to the tune of $260, and a week later
the check engine light came back on.

Quote:

From what I've read tonight, it really sounds like I need to put both
kids into 57 Fords, and teach them how to change distributors and

rebuild carburetors, and get the one kid out of LA! Good grief - are
these things going to give them nothing but grief? Is the company
really owned by the French these days?

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O2 sensor problems

Nissan Maxima Discussion of the Nissan Maxima Automobile (alt.autos.nissan.maxima)

Re: O2 sensor problems - 11-23-2005 , 02:54 AM

Re: O2 sensor problems - 11-23-2005 , 06:49 PM

Re: O2 sensor problems - 11-25-2005 , 01:22 AM