When is a heated 02 sensor necessary ?

[David Cooley]

At 03:47 PM 11/01/2000, you wrote:
>Hey guys. I just wanted to ask this question to get some opinions. It 
>looks like I might have to get one. I installed Edelbrock headers on my 
>L98 engine and the brand new 02 sensor I put in, swings from like 54mV to 
>almost 900mV at idle. I even got a "low 02" error code once from the ECM. 
>Would a heated 02 sensor help alleviate this ? Is one necessary when 
>putting headers on ?
>
>

If you have the output swinging like it should, a heated O2 won't help a 
lot...  heated O2's are needed when the sensor has to be farther from the 
exhaust ports and is used to pre-heat and maintain temp to keep it working.
Make sure you don't have any leaks on the headers, as a leak can suck in 
air and make the sensor read lean with a low-o2.  Also make sure the 
headers have a good ground...  If the ground isn't good the resistance will 
drop the voltage and make the low-o2 code as well.

===========================================================
David Cooley N5XMT Internet: N5XMT at triad.rr.com
Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
I am Pentium of Borg... Division is Futile!
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