2nd O2 will not effect timing; it's job is to report how well the cat
converter is doing it's job.

--
Stephen W. Hansen
ASE Certified Master Automobile Technician
ASE Undercar Specialist


"someone" > wrote in message
...
>
>> Hi!
>>
>> Quick question:
>>
>> Honda told me that my engine light is on because of a secondary O2 sensor
>
> $ 600.00 is way high (my 2000 Civic needs a O2 sensor and I've gotten
> prices in the $325.00 range from Honda dealers) anyway I went to Auto zone
> & they pulled the trouble code for free, mine is the heated part of the
> O2 sensor, so my check engine light has been on for months now however if
> the error showed the O2 sensor itself was having trouble I'd replace it
> right away cause it may be sending a bogus signal to the computer thus it
> may be trying to correct it by retarding the timing, over fueling etc.
> See what the error code is and take the required action.
>
> --
> Rob Fruth - Houston, Tx
> http://www.rfruth.net
>
>
> 1981 Raleigh for errands & fun ____ __o
> 1997 Trek 2300 for real fun ! ____ _ \ | _)
> 2000 Civic hatchback (_)/ (_)
>