Need O2 sensor advice.

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Old 09 Jun 2006, 12:42 am   #1 (permalink)
Brent
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Default Need O2 sensor advice.

So I bought a 1994 Camry XLE V6 with 88k miles and the check engine
light came on after I bought it. One Hundred dollars later the dealer
tells me I need a new O2 sensor and they'd put it in for $480. I told
them that was crazy. The maintaince invoice says "Found Code P0135-
Vehicle needs new O2 Sensor, Bank One Sensor One. So I should be good
if I buy a new sensor and have it installed right? What worries me is
that in the maintaince records there is an invoice that says the "front
bank O2 sensor" was replaced, is this the sensor? Should the sensor
really be going bad after only 40k miles?

thanks,
r

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Old 09 Jun 2006, 01:40 am   #2 (permalink)
Mark A
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Default Re: Need O2 sensor advice.

"Brent" <rbmattis@gmail.com> wrote in message
news:1149831729.612087.205170@c74g2000cwc.googlegr oups.com...
> So I bought a 1994 Camry XLE V6 with 88k miles and the check engine
> light came on after I bought it. One Hundred dollars later the dealer
> tells me I need a new O2 sensor and they'd put it in for $480. I told
> them that was crazy. The maintaince invoice says "Found Code P0135-
> Vehicle needs new O2 Sensor, Bank One Sensor One. So I should be good
> if I buy a new sensor and have it installed right? What worries me is
> that in the maintaince records there is an invoice that says the "front
> bank O2 sensor" was replaced, is this the sensor? Should the sensor
> really be going bad after only 40k miles?
>
> thanks,
> r
>


It is not unheard of for O2 sensor to go bad after 40K miles, especially on
a car not driven a lot (like yours). Age is more important than miles.

To get it replaced cheaper, you could try an independent garage that
specializes in Toyota, or try another dealer. But if they are charging you
$100 for the diagnosis, then you are getting ripped off and I would complain
to Toyota, the Management of the dealer, and my local TV station consumer
reporter. Changing these yourself is not as easy as it may seem, and may
require a special tool.

You should get this fixed, because the O2 sensor adjusts the fuel mixture
and you may be running too rich or too lean without it functioning properly.

BTW, if the light came on within a week of purchasing the car, then it is
likely the previous owner knew about the problem and just reset the computer
(pulling the computer fuse). When the computer is reset, it usually takes
several days for the light to come back on for some of the bad O2 sensors
(that is how it worked on my 92 V6 Camry).


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Old 09 Jun 2006, 05:08 am   #3 (permalink)
qslim
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Default Re: Need O2 sensor advice.

Bank 1 is the rear bank on your engine, not the front. Your records
indicate that bank 2 has been replaced.
Bank 1 is in the rear exhaust manifold (close to the firewall)and is
accessed from the bottom of the car.

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Old 09 Jun 2006, 09:45 am   #4 (permalink)
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Default Re: Need O2 sensor advice.


"qslim" <Suckers@suckersdotcom> wrote in message
news:bfa71f7e8c8c325eeb58566cfdd9474a@localhost.ta lkaboutautos.com...
> Bank 1 is the rear bank on your engine, not the front. Your records
> indicate that bank 2 has been replaced.
> Bank 1 is in the rear exhaust manifold (close to the firewall)and is
> accessed from the bottom of the car.


There has been a lot of discussion about the type of oxygen sensors to be
used.

If you buy Toyota OEM, it may be expensive.

Some aftermarket are much cheaper, some are good, some are not.


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Old 09 Jun 2006, 11:06 am   #5 (permalink)
Andy Hill
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Default Re: Need O2 sensor advice.

"Brent" <rbmattis@gmail.com> wrote:
>So I bought a 1994 Camry XLE V6 with 88k miles and the check engine
>light came on after I bought it. One Hundred dollars later the dealer
>tells me I need a new O2 sensor and they'd put it in for $480. I told
>them that was crazy. The maintaince invoice says "Found Code P0135-
>Vehicle needs new O2 Sensor, Bank One Sensor One. So I should be good
>if I buy a new sensor and have it installed right? What worries me is
>that in the maintaince records there is an invoice that says the "front
>bank O2 sensor" was replaced, is this the sensor? Should the sensor
>really be going bad after only 40k miles?
>

On the V engines, there are two O2 sensors upstream of the cat (bank1 sensor 1
and bank2 sensor 1). The one that wasn't replaced 40K ago has now gone south.

sparkplugs.com has some decent prices on Denso and NGK O2 sensors if you want to
DIY.
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Old 09 Jun 2006, 12:16 pm   #6 (permalink)
Brent
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Default Re: Need O2 sensor advice.

I spent 88 dollars on a Denso from Sparkplugs.com... thanks for the
advice.


Andy Hill wrote:
> "Brent" <rbmattis@gmail.com> wrote:
> >So I bought a 1994 Camry XLE V6 with 88k miles and the check engine
> >light came on after I bought it. One Hundred dollars later the dealer
> >tells me I need a new O2 sensor and they'd put it in for $480. I told
> >them that was crazy. The maintaince invoice says "Found Code P0135-
> >Vehicle needs new O2 Sensor, Bank One Sensor One. So I should be good
> >if I buy a new sensor and have it installed right? What worries me is
> >that in the maintaince records there is an invoice that says the "front
> >bank O2 sensor" was replaced, is this the sensor? Should the sensor
> >really be going bad after only 40k miles?
> >

> On the V engines, there are two O2 sensors upstream of the cat (bank1 sensor 1
> and bank2 sensor 1). The one that wasn't replaced 40K ago has now gone south.
>
> sparkplugs.com has some decent prices on Denso and NGK O2 sensors if you want to
> DIY.


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Old 09 Jun 2006, 09:13 pm   #7 (permalink)
qslim
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Default Re: Need O2 sensor advice.

Another bit of advice if you are planning to pop it in yourself: grab a can
of penetrating fluid and let that old sensor marinate for awhile - like
overnight. I find those older Toyotas - especially the rear bank - will
often have threads in the manifold that are seized. Figuring out a way to
get a tap in that rear bank while it is in the car can be a real headache.
Let the old threads soak for a while and you shouldn't have a problem
getting that sucker out.

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Old 10 Jun 2006, 03:53 pm   #8 (permalink)
johngdole@hotmail.com
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Default Re: Need O2 sensor advice.

The next time the MIL light comes on, go to Autozone to have them read
the code(s) for free. Or buy a simple OTC OBD-II code reader for
$69+tax at Pep Boys, Advance Autos, Checkers, or Kragens. It's cheaper
than the $100 one-time deal at the "dealer".

$88 is a good price for an oxygen sensor. Except I don't think the
Denso thimble type oxygen sensors are very good at all. I'd go with the
new generation of Bosch planar oxygen sensors. These are the ones with
vent holes only at the tip of the sensor instead of on the side of the
cap on thimble types. Lights up faster, uses less power for the heater,
and is more difficult to contaminate than the old thimble type (which
will gradually be phased out as EPA requires lower exhaust emissions.)

See: http://www.boschautoparts.com/Produc...nsors/PlanarO2

Denso sensors may be the source of your problem, but you do have to
make sure there isn't something else upstream that causes the oxygen
sensor to go bad, otherwise your new sensor will go bad as well. Things
like internal coolant leak (V6 does that with their flimsy head
gaskets), rich mixture, internal oil leaks are some of the causes. But
these should not affect the heater circuit, which the P0135 code was
about.

Note: P0135 refers to the heater circuit of the rear bank or right-hand
bank sensor. Can you measure the resistence of the heater circuit from
your old sensor?


Brent wrote:
> So I bought a 1994 Camry XLE V6 with 88k miles and the check engine
> light came on after I bought it. One Hundred dollars later the dealer
> tells me I need a new O2 sensor and they'd put it in for $480. I told
> them that was crazy. The maintaince invoice says "Found Code P0135-
> Vehicle needs new O2 Sensor, Bank One Sensor One. So I should be good
> if I buy a new sensor and have it installed right? What worries me is
> that in the maintaince records there is an invoice that says the "front
> bank O2 sensor" was replaced, is this the sensor? Should the sensor
> really be going bad after only 40k miles?
>
> thanks,
> r


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