Question re: O2 sensor.

My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for my 2.2L
93 Camry. The dealer has a different opinion, saying that the OEM (290 CAD)
is better because it is heated or pre-heated, I don't quite remember what
they said about this.
What is the collective wisdom on this matter?
JP

Bassplayer12 wrote:[color=blue]
> My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for my 2.2L
> 93 Camry. The dealer has a different opinion, saying that the OEM (290 CAD)
> is better because it is heated or pre-heated, I don't quite remember what
> they said about this.
> What is the collective wisdom on this matter?
> JP
>
>[/color]

If the Bosch unit is unheated, it is "adequate".
If the oem part is heated, it is " better".

What effect, if any, on gas mileage?
JP

"Cosmopolite" <anywhere@anywhen.net> wrote in message
news:hTvke.10039$on1.3962@clgrps13...[color=blue]
> Bassplayer12 wrote:[color=green]
>> My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for my
>> 2.2L 93 Camry. The dealer has a different opinion, saying that the OEM
>> (290 CAD) is better because it is heated or pre-heated, I don't quite
>> remember what they said about this.
>> What is the collective wisdom on this matter?
>> JP[/color]
>
> If the Bosch unit is unheated, it is "adequate".
> If the oem part is heated, it is " better".[/color]

Bassplayer12 wrote:[color=blue]
> My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for
> my 2.2L 93 Camry. The dealer has a different opinion, saying that the
> OEM (290 CAD) is better because it is heated or pre-heated, I don't
> quite remember what they said about this.
> What is the collective wisdom on this matter?
> JP[/color]

If your mechanic is pushing an 'unheated' substitute, keep in mind that he
makes more profit and that likely the Bosch won't last as long.
Additionally, your ECU may pick up on the self diagnosis that there is no
completion of the O2 heater circuit and consequently turn ON the Check
Engine light.

Bosch does makes a "heated O2" sensor for your car ... which is what should
be fitted if you're really cannot afford the genuine Toyota part. You might
also check the Internet for genuine Toyota parts outlets that mail order.

Bassplayer12 wrote:
[color=blue]
> My mechanic is adamant: the Bosch O2 sensor (85 CAD) is
> adequate for my 2.2L 93 Camry. The dealer has a different
> opinion, saying that the OEM (290 CAD) is better because
> it is heated or pre-heated, I don't quite remember what
> they said about this.[/color]

I thought that aftermarket O2 sensors were readily available in heated
and unheated versions, including with both high-resistance and
low-resistance heating elements, and that the only possible
compatibility problem could be with the wiring connector (but there are
splicing kits for that).

"Philip" <1chip-state1@earthlink.n0t> wrote in message
news:wqxke.9588$w21.4532@newsread3.news.atl.earthlink.net...[color=blue]
> Bassplayer12 wrote:[color=green]
> > My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for
> > my 2.2L 93 Camry. The dealer has a different opinion, saying that the
> > OEM (290 CAD) is better because it is heated or pre-heated, I don't
> > quite remember what they said about this.
> > What is the collective wisdom on this matter?
> > JP[/color]
>
> If your mechanic is pushing an 'unheated' substitute, keep in mind that he
> makes more profit and that likely the Bosch won't last as long.
> Additionally, your ECU may pick up on the self diagnosis that there is no
> completion of the O2 heater circuit and consequently turn ON the Check
> Engine light.
>
> Bosch does makes a "heated O2" sensor for your car ... which is what[/color]
should[color=blue]
> be fitted if you're really cannot afford the genuine Toyota part. You[/color]
might[color=blue]
> also check the Internet for genuine Toyota parts outlets that mail order.[/color]

Try:

ToyotaCountry.com
RockAuto.com

--Josh

Look at your existing (original) oxygen sensor.
For the '93 four cylinder there should be one wire at the primary
sensor.
To the best of my knowledge, the original sensor is unheated.
I always like to use original equipment, but you can always shop for
price and often do much better than the local dealer. Use your VIN
number when ordering so they can be sure to select the correct part for
your vehicle.
O2 sensors need to be hot before generating a signal, so the addition
of a heating filament helps them heat up more quickly thus saving some
fuel when first starting up. However, the most common failure mode is
for the heating element to burn out over time, whereas if the unheated
O2 sensor remains free of contamination, they can last quite a long
time.

Bassplayer12 wrote:[color=blue]
> What effect, if any, on gas mileage?
> JP[/color]

Probably not much.
The sensor starts to work at about 600 deg.F
To get accurate numbers, you would need to install
an exhaust pyrometer and time the temp. rise till 600.

[color=blue]
>
> "Cosmopolite" <anywhere@anywhen.net> wrote in message
> news:hTvke.10039$on1.3962@clgrps13...
>[color=green]
>>Bassplayer12 wrote:
>>[color=darkred]
>>>My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for my
>>>2.2L 93 Camry. The dealer has a different opinion, saying that the OEM
>>>(290 CAD) is better because it is heated or pre-heated, I don't quite
>>>remember what they said about this.
>>>What is the collective wisdom on this matter?
>>>JP[/color]
>>
>>If the Bosch unit is unheated, it is "adequate".
>>If the oem part is heated, it is " better".[/color]
>
>
>[/color]

Given the fact that O2 sensors last a very long time (which
implies low cost per mile), it seems foolish to me to go
with some generic Bosch sensor. I'd get the OEM part
(alhough shopping around for one on the internet is a good
idea).

Ed

Bassplayer12 wrote:[color=blue]
>
> My mechanic is adamant: the Bosch O2 sensor (85 CAD) is adequate for my 2.2L
> 93 Camry. The dealer has a different opinion, saying that the OEM (290 CAD)
> is better because it is heated or pre-heated, I don't quite remember what
> they said about this.
> What is the collective wisdom on this matter?
> JP[/color]

my 93 camry 2.2 with the 5s-fe is unheated.


On 24 May 2005 06:36:48 -0700, "Daniel" <nospampls2002@yahoo.com>
wrote:
[color=blue]
>Look at your existing (original) oxygen sensor.
>For the '93 four cylinder there should be one wire at the primary
>sensor.
>To the best of my knowledge, the original sensor is unheated.
>I always like to use original equipment, but you can always shop for
>price and often do much better than the local dealer. Use your VIN
>number when ordering so they can be sure to select the correct part for
>your vehicle.
>O2 sensors need to be hot before generating a signal, so the addition
>of a heating filament helps them heat up more quickly thus saving some
>fuel when first starting up. However, the most common failure mode is
>for the heating element to burn out over time, whereas if the unheated
>O2 sensor remains free of contamination, they can last quite a long
>time.[/color]