Bad O2 sensors...?

[DamnYankee]

yessir...I mean they weren't even registering. Sometimes BARELY. Other times they would spike a little and then go back down to virtually nothing.

I'm needing some input guys - I don't have a clue what the problem might be. Maybe I should have Allen send me a tune with them deleted? Is that an option?

[Motocycleguy]

<div class='quotetop'>QUOTE(DamnYankee &#064; Apr 10 2007, 08&#58;50 PM) [snapback]89463[/snapback]</div>

yessir...I mean they weren&#39;t even registering. Sometimes BARELY. Other times they would spike a little and then go back down to virtually nothing.

I&#39;m needing some input guys - I don&#39;t have a clue what the problem might be. Maybe I should have Allen send me a tune with them deleted? Is that an option?
[/b]

No that is not an option... You would just kill the code and not correct your fueling problem. If your going to go that route, Delete the 02&#39;s and have allen tune you in open loop. Thats the quick easy proven fix.

I kinda suspected this if you read my first post in your "I quite&#33;" thread. I see it in about every 10 trucks and the fix can be a real bitch in the trucks that do it&#33; Part of the problem is the headers and having a cam dont help either. Basicaly with your headers, The 02&#39;s have moved farther downstream and the switch points have changed. Also stockers are very temp dependant. Installing some Bosch 13111&#39;s and ajusting some things in the tune can help as well, But I have a few trucks that the only fix was to go open loop. Get some data at the track I guarantee this is your issue. I bet there either flat lining or switching slowly at WOT. Most trucks that have this problem once fixed pick up about .4 at the track.