? about 02's
09-07-2005, 09:34 AM
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? about 02's I have been adjusting my pe table. I can't get the 02 voltages to come down. I had about .960 to start with. They are pretty consistent through an entire wot run. I leaned the table all the way to the point it's pinging, and still the voltages haven't changed much. Maybe .945. I can't get them anywhere near .890. Could my 02's be wore out? I don't have any dtc's, but I have noticed the engine running rough after making a full throtle run. After a couple minutes it smoothes back out. I think the 02's are original, and the car has about 56k on it. I had to splice some extra wire on them when I put my lt's on, but since I don't have any dtc's, I figured they were ok. Should I just get a new set and try them? I know 02's are not very accurate for tuning outside stoich, but the voltages should still drop when pulling fuel. What do you guys think?
09-07-2005, 09:41 AM
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If you're going to stick with NBO2's, I'd definitely get some new ones. The splice might be affecting your readings. If you wanted to do it right though, I'd get a wideband.
09-07-2005, 09:54 AM
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I'll probably get a wb at some point, but I have been fighting a ping issue. Other than the headers, my engine is stock, and with the factory tune, I am getting a lot of ping at wot. I have tried all the usual stuff. New plugs, top end clean, cleaned maf, removed egr, and still pings. The only way I can get rid of the ping is by adding a bunch of fuel in the pe table. When I added enough to the pe table to get rid of the ping, I dynoe'd the car at G force. This was before I installed the headers. Mike said he could tell I had a fueling issue by the wavy pattern at the top of my run. The car is rich, but if I subtract fuel it pings. I was just wondering if my 02 reading were skewed by bad sensors. I just got a cam and springs, but I need to figure this ping out before I change any more parts. Don't want to add to the problem.
Get the Bosch 13111 O2's. They already have long enough length for LT's.
