Driving home tonight i notice my a/f gauge was hanging out lean when i was on cruise at 72mph. I have never seen the gauge hang out that low for very long, normally only when i let off the gas and slow down. The car didnt drive any differently, but the gauge worried me, when i stepped on it i would still get a rich reading at wot.
Any ideas or suggestions to troubleshoot?
http://www.aplusperformance.com
http://www.modified-motorsports.com
when you let off the gas completely in gear it should go full lean, when you step on it it should go full lean, what your describing is completely normal
![](http://registry.gmenthusiast.com/images/matt38y3/sig.jpg)
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
when you step on it , it should be full rich i mean, damn we need an edit post option!
![](http://registry.gmenthusiast.com/images/matt38y3/sig.jpg)
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
when I have my cruise set at 70 mph, it still hangs very low lean, sometimes when I let off the gas, it goes so lean that there are no lights on, now when i step on it it bounces from full lean to mid rich.
Like I said there is no performance issue, just that I know it isnt following the same pattern as it used to. I will post a vid tonight when i get home showing it.
http://www.aplusperformance.com
http://www.modified-motorsports.com
I wouldnt worry about it a Narrowband is nothing more than a light show anyway
![](http://registry.gmenthusiast.com/images/matt38y3/sig.jpg)
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
only worry i have is when i go to do nitrous in another month or so, i know i dont want to be running lean. How else can I test it to make sure I am not running that lean, would my best bet be getting a wideband im guessing.
Also is it possible the gauge is going bad?
http://www.aplusperformance.com
http://www.modified-motorsports.com
yes get the wide band o2 , the narrow you have now is just a pretty light show
talk to karo@carcustoms.net for the wide band
it will move similar to the gauge now , but not as fast , but will give a very accurate