[Aaron Cake]

I need a small favour...Can someone with an OBD-II reader let me know the voltage they are seeing on the secondary O2 sensor during lean burn (5 speed only)? I have a feeling that I shouldn't be seeing 0 volts...

Thanks!

 

[Insightful Trekker]

Looks like Jackmpg (aka. TurboInsight #2 <g>) just posted what you are looking for.

See:

Mod & Tech, pg. 16 of the Turbocharged Insight thread.

http://www.insightcentral.net/forum/vie ... 0ac5b28b10

HTH!

 

[sunhunter]

I have some saved data here from when I was diagnosing my #1 o2 sensor failure. The #2 o2 sensor does appear to go to zero during lean burn. As a side note, my #1 o2 sensor would work for a little while and then get pinned high. I replaced the sensor and have not had any more problems.

Hunter

 

[Aaron Cake]

Yep, looks like zero volts is normal. It makes sense actually, since the way lean ratio during lean burn is well out of the range of a normal O2 sensor...