2G O2 sensor

[Dsmtony88]

Hello, everyone. I have a 6bolt in a 2g. When i look at my log (ecmlink v3) my front o2 sensor runs at .2v and holds there. Then will jump right to .8v or .9v. It will hold at that voltage for a while then back down. My question is, is this normal? I hear the engine load change when this happens. Also the idle(rpms) changes when this happens. Thanks for any info. I may be able to post a log tomorrow of it.

 

[1990TSIAWDTALON]

Here is a very good explanation. I am assuming that you have the stock narrow band sensor not a wide band. It's really good reading for everyone so they understand what it is telling the ECU.
https://www.brakeandfrontend.com/wi...-vs-narrowband-understanding-the-differences/

Marty

 

[Dsmtony88]

Good information thank you. Yes i have the narrow band in the front o2 housing. This is the one i was talking about. I have an aem wideband also. Before when i would log the o2 voltage was like a wave. Now its like a block.

 

[1990TSIAWDTALON]

When I simulate narrowband in ECMLink, it is always a square wave. I haven't ever logged a stock NB so I'm not sure on the readout but according to the article it will still swing the voltage just a lot "narrower" spectrum.

 

[Dsmtony88]

Thank you. With that info mine is not right. Ill replace it and see what the data looks like.