So I go to start my car on Sat night (was driven as recently as thursday afternoon with no issue) and the AF was SHIT and got these codes.... P2096 - Post Catalyst Fuel Trim System Low Limit U0103 - Lost Communication to Gear Shift Module - I am thinking this is from when I did the park break fix and didnt reset it. P013A - O2 Sensor 1/2 SLOW RESPONSE - RICH TO LEAN P013C - O2 SENSOR 2/2 SLOW RESPONSE – RICH TO LEAN I know others have seen this before but just wondering why out of what is basically nowhere it popped up.... should I try and drive the car to datalog it?...A/F's are in the low 11ish range on the wideband.
You might want to check this thread. http://www.srtconnection.com/forums/showthread.php?t=15750&highlight=P013A
yes...but my question was...why i went from one...to 3 lol.... and...when i made that other thread...the AF's werent shit lol
Where is your A/F sensor? Both codes are for bank 2 (passenger side). Sensor 1 - front, Sensor 2 - rear. Then again it sounds like a code that might happen if it was pig rich...? You might want to start logging before you fire the engine. Commanded afr, fuel trims, etc. ...did you get your DashDaq from Redfox yet? You could be logging all that into a single file.
low 11's on A/F is pig rich? Why would you think that? low 11's is a tad rich, but not pic rich. haha I, on the other hand am pig rich at low 10's. Why would you get three? Probably because your PCM is finally reaching it's duty cycle (long story on this one haha) and did not like what it see's? I am wondering if the O2's are going bad? Wish I could help on this one Steve, but I can not.
I can tell you this...when you start my car...if your in my house (back the car into the driveway) you will basically pass out LOL.... I am waiting on a revised tune from mike....so hopefully he can lean it out a bit... guess my question is...even if the PCM is finally catching up...why did the AF's freak out LOL
Pull out the upstream 02 sensor.See if it's fouled with carbon.You will probably need a new one,also check that the connector is not pulled out.
even though O2's arent cheap...i am thinking of just replacing all 4....this car has been running rich since the new motor was in so im thinking it might just be worth pulling them all off and putting in new ones.... is that a ridiculous thought?
I didn't get the impression that he meant at WOT. Just that he started it up and had the codes? I'm thinking this unlikely. Both on the same bank at the same time? The 2096 sounds like it could be tied to it. Heh! Since we don't know the answer, it's yet another wonderful opportunity for wild speculation :clap: Slow response on the rich to lean transition: I'm going to assume this has to do with closed loop operation (another indication that it's not a WOT issue) where the PCM constantly cycles between the narrowbands rich and lean limits constantly adjusting for/around 14:7. So let's say the sensor reaches it's max rich reading so the PCM starts moving the injector pulse width the other way towards lean. The PCM is going to expect the subsequent sensor readings to be moving towards lean as it shortens the pulse width. If this doesn't happen it throws the 013A/C codes. (I think maybe when Ron "the Sphynx" says "duty cycle" he might be talking about those codes that have to happen a number of times under certain conditions before being asserted and lighting the CEL?). So let's run with that for a minute... Maybe it's the anti-foulers that are delaying sensor response? But I assume you only put the anti-foulers on the rears and not the fronts so that's probably not it. On the other hand, if it's sensor 2 on both banks 1 and 2 than it might make more sense. That's why you need an integrated log... The PCM is going to cycle the pulse width up and down (about 2 times a second?), the short term adaptives would be what you log to watch that. The sensor readings (voltage) should track that pretty closely and your AFR readings should track that as well (perhaps with a few milliseconds delay). If you logged the above for both bank 1 and bank 2 then you could see if something is wrong on just bank 1 or 2. If commanded fuel is in sync with your AFR gauge then you might assume a narrowband sensor problem (but I'm guessing you only have a wideband on the driver's side - bank 1). If you're seeing the same behavior on the driver's side (maybe it was just below the threshold for flagging a code) then you might have to adjust/fiddle with your anti-foulers some more. (this is so exciting)
that would be correct sir.... I am going to be tweaking the anti-foulers some more....just havent had time / a nice day to do it....god damn rain... and im getting there buddy lol...but i have had the blower on for more than 2 months and not even 1000 miles on the car lol...and starting very soon...it will be away...seeing maybe 50 miles over the winter...so ill get to logging in the springtime.... I took step one...i just bought a laptop for the soul purpose of my log information....may not be ideal...but it will at least for now allow me to datalog the car for an extended period of time with the predator
ive been running rich since my heads/cam and had to replace my o2's. have you had sputtering/stalling?
i stall when i go between drive and reverse if i dont give it time to chill out between the shift.... not sure if that counts...no stalls when driving or anything....
sounds like some tuning issues buddy! 11.xx at start up and inital idle???? yeah, that is just a wee bit on the rich side considering 14.7 is where it will want to be....... no doubt the O2 sensors are probably a bit fouled like erik mentioned. swap them out, get a revised tune and hopefully all works out!!!
really........mmmmmm....... still sounds like a tune issue........i thought you made a comment about the car running rich since the upgrades???? could see it progessively worsening depending on how the adaptives might be "learning", etc. how often do you actually drive the car???? just curious....
When did you do your park break lock-out part that you mentioned? The biggest thing is to try and identify what/if anything changed between then and now. Any power issues, jump start, etc. that might have made your PCM lose the tune or reset adaptives? Was the battery disconnected for a long period of time?
doh... c'mon guys. It's got nothing to do with your adaptives being reset or whatever. The fuel adaptives "adapt" within seconds. Probably less than 6 seconds. Look elsewhere.
have driven it sine then and was fine.... I am waiting to hear back from Mike with a tune revision (something that was needed anyway)
Dave, idle adaptives take a lot of time to settle in. Before Diablo, we used to have to idle a car 40-60 minutes after a cam change for the PCM to learn the new idle. I can tell you from experience that it is definitely not happening in seconds.
