0.00v o2 at wot and a first log

[jim90TSi]

rpm tima FTRL FTRM FTRH o2 knock
3000 33° 103.7% 98.3% 81.1% 0.70V 0
3000 33° 103.7% 98.3% 81.1% 0.62V 0
3000 33° 103.7% 98.3% 81.1% 0.59V 0
3031 33° 103.7% 98.3% 81.1% 0.31V 1
3031 24° 103.7% 98.3% 81.1% 0.74V 1
3094 22° 103.7% 98.3% 81.1% 0.82V 0
3125 24° 103.7% 98.3% 81.1% 0.82V 0
3156 22° 103.7% 98.3% 81.1% 0.82V 0
3188 21° 103.7% 98.3% 81.1% 0.82V 0
3250 20° 103.7% 98.3% 81.1% 0.82V 0
3313 18° 103.7% 98.3% 81.1% 0.82V 0
3406 17° 103.7% 98.3% 81.1% 0.80V 0
3469 17° 103.7% 98.3% 81.1% 0.80V 0
3594 17° 103.7% 98.3% 81.1% 0.78V 0
3719 17° 103.7% 98.3% 81.1% 0.72V 0
3719 17° 103.7% 98.3% 81.1% 0.64V 0
3750 17° 103.7% 98.3% 81.1% 0.51V 0
3938 18° 103.7% 98.3% 81.1% 0.37V 0
4063 18° 103.7% 98.3% 81.1% 0.21V 0
4125 18° 103.7% 98.3% 81.1% 0.12V 0
4188 18° 103.7% 98.3% 81.1% 0.06V 0
4281 19° 103.7% 98.3% 81.1% 0.04V 0
4281 19° 103.7% 98.3% 81.1% 0.02V 0
4406 19° 103.7% 98.3% 81.1% 0.02V 0
4625 19° 103.7% 98.3% 81.1% 0.00V 0
4656 19° 103.7% 98.3% 81.1% 0.00V 0
4688 19° 103.7% 98.3% 81.1% 0.00V 0
4750 18° 103.7% 98.3% 81.1% 0.00V 0
4938 18° 103.7% 98.3% 81.1% 0.00V 0
4906 18° 103.7% 98.3% 81.1% 0.00V 0
5031 18° 103.7% 98.3% 81.1% 0.00V 0
5156 19° 103.7% 98.3% 81.1% 0.00V 0
5281 19° 103.7% 98.3% 81.1% 0.00V 0
5250 20° 103.7% 98.3% 81.1% 0.00V 0
5344 20° 103.7% 98.3% 81.1% 0.00V 0
5438 20° 103.7% 98.3% 81.1% 0.00V 0
5500 22° 103.7% 98.3% 81.1% 0.00V 0
5625 22° 103.7% 98.3% 81.1% 0.00V 0
5625 21° 103.7% 98.3% 81.1% 0.00V 1
5625 23° 103.7% 98.3% 81.1% 0.00V 8
5656 19° 103.7% 98.3% 81.1% 0.00V 8
5813 20° 103.7% 98.3% 81.1% 0.00V 12
5844 18° 103.7% 98.3% 81.1% 0.00V 19
5938 16° 103.7% 98.3% 81.1% 0.00V 19
5938 17° 103.7% 98.3% 81.1% 0.00V 19
6031 17° 103.7% 98.3% 81.1% 0.00V 31
6219 14° 103.7% 98.3% 81.1% 0.00V 35
6094 14° 103.7% 98.3% 81.1% 0.00V 35
6094 16° 103.7% 98.3% 81.1% 0.00V 39
6219 12° 103.7% 98.3% 81.1% 0.00V 39
6375 16° 103.7% 98.3% 81.1% 0.00V 43
6281 13° 103.7% 98.3% 81.1% 0.00V 43
6156 16° 103.7% 98.3% 81.1% 0.00V 43
6594 21° 103.7% 98.3% 81.1% 0.00V 43
6156 8° 103.7% 98.3% 81.1% 0.00V 42
6000 6° 103.7% 98.3% 81.1% 0.00V 36
5531 33° 103.7% 98.3% 81.1% 0.00V 19
5281 39° 103.7% 98.3% 81.1% 0.00V 3
4906 43° 103.7% 98.3% 81.1% 0.00V 0
4813 29° 103.7% 98.3% 81.1% 0.02V 0
4781 27° 103.7% 98.3% 81.1% 0.04V 0
4594 30° 103.7% 98.3% 81.1% 0.02V 0
4656 42° 103.7% 98.3% 81.1% 0.00V 0
4781 44° 103.7% 98.3% 81.1% 0.00V 0
4719 44° 103.7% 98.3% 81.1% 0.00V 0
4625 45° 103.7% 98.3% 81.1% 0.00V 0
4531 44° 103.7% 98.3% 81.1% 0.00V 0
4563 31° 103.7% 98.3% 81.1% 0.00V 0
4500 31° 103.7% 98.3% 81.1% 0.00V 0
4531 31° 103.7% 98.3% 81.1% 0.00V 0
4469 31° 103.7% 98.3% 81.1% 0.00V 0
4438 30° 103.7% 98.3% 81.1% 0.00V 0
4281 30° 103.7% 98.3% 81.1% 0.00V 0
4250 30° 103.7% 98.3% 81.1% 0.00V 0
4250 30° 103.7% 98.3% 81.1% 0.00V 0
4250 30° 103.7% 98.3% 81.1% 0.00V 0
4125 29° 103.7% 98.3% 81.1% 0.00V 0
4094 29° 103.7% 98.3% 81.1% 0.00V 0
4063 28° 103.7% 98.3% 81.1% 0.00V 0
4125 28° 103.7% 98.3% 81.1% 0.00V 0
4031 28° 103.7% 98.3% 81.1% 0.00V 0
4000 28° 103.7% 98.3% 81.1% 0.00V 0
4000 28° 103.7% 98.3% 81.1% 0.00V 0
3906 28° 103.7% 98.3% 81.1% 0.00V 0
3875 28° 103.7% 98.3% 81.1% 0.00V 0
3875 28° 103.7% 98.3% 81.1% 0.00V 0
3813 28° 103.7% 98.3% 81.1% 0.00V 0
3750 28° 103.7% 98.3% 81.1% 0.00V 0
3719 28° 103.7% 98.3% 81.1% 0.00V 0
3688 27° 103.7% 98.3% 81.1% 0.00V 0
3656 27° 103.7% 98.3% 81.1% 0.00V 0
3719 27° 103.7% 98.3% 81.1% 0.00V 0
3656 27° 103.7% 98.3% 81.1% 0.00V 0
3594 27° 103.7% 98.3% 81.1% 0.00V 0
3594 27° 103.7% 98.3% 81.1% 0.00V 0



If you look at my o2 is slowly starts to go down to 0 after i punch it. It settled at .82 for a little bit but then decresed to 0 and then soon after i was getting 43 counts of knock. Is the 0.00v at wot a bad o2 for sure? It cycles good at cruise and idle but wot is bad. I also free revved in my driveway and got 15 counts of knock.

Let me know what you guys think
Look is profile for mods.

 

[cdct99]

What are your settings on the AFC? It looks like you are running incredibly lean at WOT and this is whats causing the substantial knock. Add a lot of fuel up top (past 3500) and then back it down until you see knock. This is clearly not just a bad o2 sensor, as the knock indicates a lean condition as well. In my experience, I have never seen an o2 sensor that is cycling properly end up being bad. After adding fuel through the AFC, you will want to remain above .5V at all times during WOT, as you need to be richer than 14.7:1 while in boost. Do not get on it like this until you richen things up and eliminate that knock.

 

[jim90TSi]

here is another log with some more fuel thrown in. Adding fuel with an safc2 means adding negative correction right? Im notcing with the logs i have taken the big knock hits start right after i let off of the throttle. If my o2 was dead it would still have voltage though wouldnt it?

RPM TIMA tps ftrl FTRM FTRH o2 knock
2906 32° 25.5% 94.4% 101.4% 89.7% 0.68V 0
2906 33° 25.5% 94.4% 101.4% 89.7% 0.27V 0
2906 33° 47.8% 94.4% 101.4% 89.7% 0.70V 1
3000 24° 100.0% 94.4% 101.4% 89.7% 0.78V 1
3031 23° 100.0% 94.4% 101.4% 89.7% 0.82V 0
3094 23° 100.0% 94.4% 101.4% 89.7% 0.84V 0
3188 21° 100.0% 94.4% 101.4% 89.7% 0.84V 0
3281 20° 100.0% 94.4% 101.4% 89.7% 0.82V 0
3375 18° 100.0% 94.4% 101.4% 89.7% 0.82V 0
3438 17° 100.0% 94.4% 101.4% 89.7% 0.80V 0
3500 17° 100.0% 94.4% 101.4% 89.7% 0.78V 0
3719 17° 100.0% 94.4% 101.4% 89.7% 0.66V 0
3875 17° 100.0% 94.4% 101.4% 89.7% 0.45V 0
3906 18° 100.0% 94.4% 101.4% 89.7% 0.23V 0
3938 18° 100.0% 94.4% 101.4% 89.7% 0.10V 0
4063 18° 100.0% 94.4% 101.4% 89.7% 0.06V 0
4281 19° 100.0% 94.4% 101.4% 89.7% 0.04V 0
4406 19° 100.0% 94.4% 101.4% 89.7% 0.02V 0
4563 19° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4688 19° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4656 19° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4844 19° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4875 18° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4906 18° 100.0% 94.4% 101.4% 89.7% 0.00V 0
4969 18° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5188 18° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5281 18° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5406 20° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5344 20° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5563 20° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5656 21° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5688 21° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5781 21° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5813 22° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5969 23° 100.0% 94.4% 101.4% 89.7% 0.00V 0
5875 23° 100.0% 94.4% 101.4% 89.7% 0.00V 2
6094 22° 100.0% 94.4% 101.4% 89.7% 0.00V 2
5969 23° 100.0% 94.4% 101.4% 89.7% 0.00V 2
6063 22° 100.0% 94.4% 101.4% 89.7% 0.00V 1
6219 22° 100.0% 94.4% 101.4% 89.7% 0.00V 1
6313 21° 100.0% 94.4% 101.4% 89.7% 0.00V 8
6375 20° 100.0% 94.4% 101.4% 89.7% 0.00V 11
6281 18° 100.0% 94.4% 101.4% 89.7% 0.00V 16
6219 17° 12.9% 94.4% 101.4% 89.7% 0.00V 16
5906 28° 9.4% 94.4% 101.4% 89.7% 0.00V 0
5500 45° 9.4% 94.4% 101.4% 89.7% 0.00V 0
5125 45° 9.4% 94.4% 101.4% 89.7% 0.00V 0
4594 45° 9.4% 94.4% 101.4% 89.7% 0.00V 0
4281 44° 9.4% 94.4% 101.4% 89.7% 0.00V 0
3875 43° 9.4% 94.4% 101.4% 89.7% 0.00V 0
3563 28° 9.4% 94.4% 101.4% 89.7% 0.00V 0
3281 27° 9.4% 94.4% 101.4% 89.7% 0.00V 0
3000 27° 9.4% 94.4% 101.4% 89.7% 0.00V 0
2719 26° 9.4% 94.4% 101.4% 89.7% 0.00V 0
2438 25° 9.4% 94.4% 101.4% 89.7% 0.00V 0
2188 25° 9.4% 94.4% 101.4% 89.7% 0.00V 0
1938 24° 9.4% 94.4% 101.4% 89.7% 0.00V 0
1719 27° 9.4% 94.4% 101.4% 89.7% 0.00V 0
1469 21° 9.4% 94.4% 101.4% 89.7% 0.00V 0
1219 16° 9.4% 94.4% 101.4% 89.7% 0.00V 0
1000 14° 9.4% 94.4% 101.4% 89.7% 0.00V 0
844 14° 9.4% 94.4% 101.4% 89.7% 0.00V 0
844 16° 9.4% 94.4% 101.4% 89.7% 0.00V 0

 

[tstkl]

test your o2 sensor...http://www.shotimes.com/SHO3badO2sensor.html

 

[blcknspo0ln]

it's pretty obvious the o2 sensor is shot. another good way to test it is to simply unplug the thing. if it reads the same logs (which I'm betting it will) the sensor is toast.

btw, if you get another one, do yourself a favor and buy a regular universal o2 and solder it yourself. the price jumps from 60 bucks to 110 just to have a "factory style" o2 sensor (comes with harness)..

 

[jim90TSi]

I will do that tommorow, i don't see how it reads fine at idle and cruise but wot it just dies. My gas mileage does suck like a bad o2 though.

nice car by the way Tom

Jim

 

[tstkl]

wasting time not doing my hw and i noticed this old post.

it has come to my attention (recently had the same problem at idle) that an o2 is not shot at 0.00 in all cases. I dont know if you bought a new o2, but in my case it was just extremely lean at idle. this was due to two things. one was a boost leak at the intake manifold, and the other was the recent install of a gm maf that i had yet to tune. I got my car to run, with the leak, by richening up the idle heavily. I then drove the car to pauls and hes going to try and get "the demon bolt" out. this could be the same case, as I see you have a safc, and your larger injectors might be causing lean wot if you haven't tuned for that yet. my guess is that you've fixed this problem a while ago, but this information is now here for anyone searching. i know how we love that word here, so ill say it again for all you mods to m-bate to: searching is good

 

[Flybiyou]

Did anyone notice he said (To ADD FUEL you go negative on the AFC right)

No neg is less Pos is more.

I hope you were not pulling to much fuel out.

 

[blcknspo0ln]

nice car by the way Tom

Jim

Thanks

 

[blcknspo0ln]

No neg is less Pos is more.

To make that a bit more clear, going more negative in your fuel settings pulls fuel (well, it's the product of doing that) and going more positive will end up giving you more fuel.