2000 Mazda Protege Check Engine Light Problem

HI all

Have a 00 Protege DX with 1.6L 5 Spd
The check engine light come on once and weel
I have a cheap scanner tool that says P1170 Code
I look up the code and It says O2 Sendor But the car has two which one could
it be And I also Check the heat side of both O2 sensors and It looks like 3
Omns. Is that right cold of cousre. Is there any thing more I can test
The car runs good and gets good gas mileage. But the tail pipe looks a
little sutty Black not bad but a little carbon.

any help would be great full
Thanks

The Code should tell you which 02 sensor it is.. But you can also test the
02 sensor by hooking it up to your ohm meter and measuring the voltage from
the sending wire of the 02 sensor, not the heat side. Bring the car up to
temperature and the voltage should jump from .2something to .9something
continuously, if the voltage stays constant then you know that 02 sensor is
not functioning properly and should be replaced!

"Eddie DeStafney" <(E-Mail Removed)> wrote in message
news:14806$40fdafaa$cf672f99$26685@allthenewsgroup s.com...
> HI all
>
> Have a 00 Protege DX with 1.6L 5 Spd
> The check engine light come on once and weel
> I have a cheap scanner tool that says P1170 Code
> I look up the code and It says O2 Sendor But the car has two which one
could
> it be And I also Check the heat side of both O2 sensors and It looks like
3
> Omns. Is that right cold of cousre. Is there any thing more I can test
> The car runs good and gets good gas mileage. But the tail pipe looks a
> little sutty Black not bad but a little carbon.
>
> any help would be great full
> Thanks
>
>

Eddie,
I would replace both.
Sparky

"Eddie DeStafney" <(E-Mail Removed)> wrote in message
news:14806$40fdafaa$cf672f99$26685@allthenewsgroup s.com...
> HI all
>
> Have a 00 Protege DX with 1.6L 5 Spd
> The check engine light come on once and weel
> I have a cheap scanner tool that says P1170 Code
> I look up the code and It says O2 Sendor But the car has two which one
could
> it be And I also Check the heat side of both O2 sensors and It looks like
3
> Omns. Is that right cold of cousre. Is there any thing more I can test
> The car runs good and gets good gas mileage. But the tail pipe looks a
> little sutty Black not bad but a little carbon.
>
> any help would be great full
> Thanks
>
>


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Seems a little early for an O2 sensor to go. Before changing anything, I
would carefully inspect the connectors going to the sensors. Even the best
car companies can have a contact seating problem that can be easily fixed
with a pair of needle nose pliers (like the fan connector for my '90 Miata).

Ken

"Steve Parker" <(E-Mail Removed)> wrote in message
news:T7-dnRwbIKg3ObfcRVn-(E-Mail Removed)...
> Eddie,
> I would replace both.
> Sparky
>
> "Eddie DeStafney" <(E-Mail Removed)> wrote in message
> news:14806$40fdafaa$cf672f99$26685@allthenewsgroup s.com...
> > HI all
> >
> > Have a 00 Protege DX with 1.6L 5 Spd
> > The check engine light come on once and weel
> > I have a cheap scanner tool that says P1170 Code
> > I look up the code and It says O2 Sendor But the car has two which one
> could
> > it be And I also Check the heat side of both O2 sensors and It looks
like
> 3
> > Omns. Is that right cold of cousre. Is there any thing more I can test
> > The car runs good and gets good gas mileage. But the tail pipe looks a
> > little sutty Black not bad but a little carbon.
> >
> > any help would be great full
> > Thanks
> >
> >
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.742 / Virus Database: 495 - Release Date: 08/19/2004
>
>

Mazda's are known for tripping the check engine light after 60K miles for
the O2 sensor.
"KWS" <(E-Mail Removed)> wrote in message
news:Zio_c.371803$%_6.207871@attbi_s01...
> Seems a little early for an O2 sensor to go. Before changing anything, I
> would carefully inspect the connectors going to the sensors. Even the best
> car companies can have a contact seating problem that can be easily fixed
> with a pair of needle nose pliers (like the fan connector for my '90
> Miata).
>
> Ken
>
> "Steve Parker" <(E-Mail Removed)> wrote in message
> news:T7-dnRwbIKg3ObfcRVn-(E-Mail Removed)...
>> Eddie,
>> I would replace both.
>> Sparky
>>
>> "Eddie DeStafney" <(E-Mail Removed)> wrote in message
>> news:14806$40fdafaa$cf672f99$26685@allthenewsgroup s.com...
>> > HI all
>> >
>> > Have a 00 Protege DX with 1.6L 5 Spd
>> > The check engine light come on once and weel
>> > I have a cheap scanner tool that says P1170 Code
>> > I look up the code and It says O2 Sendor But the car has two which one
>> could
>> > it be And I also Check the heat side of both O2 sensors and It looks
> like
>> 3
>> > Omns. Is that right cold of cousre. Is there any thing more I can test
>> > The car runs good and gets good gas mileage. But the tail pipe looks
>> > a
>> > little sutty Black not bad but a little carbon.
>> >
>> > any help would be great full
>> > Thanks
>> >
>> >
>>
>>
>> ---
>> Outgoing mail is certified Virus Free.
>> Checked by AVG anti-virus system (http://www.grisoft.com).
>> Version: 6.0.742 / Virus Database: 495 - Release Date: 08/19/2004
>>
>>
>
>