Doh!, sorry for the newb mistake. I am ignorant to most of this stuff, sorry.Originally Posted by GHuggins
Attaching logs with misfires still disabled, will produce with misfires enabled shortly.
RVC_LSX_B15_MisFire_ColdStart_1_Sep122023.hpl
RVC_LSX_B15_MisFire_WarmStart_1_Sep122023.hpl
RVC_LSX_B15_MisFire_CrankSensorReLearn_1_Sep122023 .hpl
RVC_LSX_B15_MisFire_WarmStart_InGear_Sep122023.hpl
He would have to get beyond the crank relearn to be able to follow this procedure. Without clearing the P0315 this wouldn't work. I might have missed it but I don't think he was able to clear the P0315.OK, your misfires are disabled in the tune. Put stock values back into the engine diagnostic misfire section then log current and history misfires for each cylinder. The one with a dead miss will constantly count up. Those are the ones to focus on. You can post the log after enabling misfires... Do a slight rev from idle too - somewhere up around holding at 1200 or 1500 rpms should work fine. If you don't have your stock tune to get the misfire settings from then go to the repository under after clicking on your name on hp tuners website. If you haven't done so you may need to set up an account to do so.
All of us in here right now I think were or are go to drivability techs that spent years diagnosing things like this, so there is that
PS that's the only reason I didn't post this reply. I've used the same procedure many times trying to figure out a miss via email tuning.
EFI specialist
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It probably has something to do with the code you have stored.
P0355 - Ignition Coil E Primary/Secondary Circuit (Current)
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
There you have it ladies and gents......
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
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Umm, sorry, where do I enable MisFire detection?
--> MisFire_Detection_ABove375rpm_Sep122023.jpg
I don't think he ever said he got the P0315 although I don't know why he would run it otherwise. I haven't checked his log though.
I'm here too, and I'm the opposite of that. Just trying to learn what I can.
All of us in here right now I think were or are go to drivability techs that spent years diagnosing things like this, so there is that
Yeah kinda confused on that. Either way sounds like Alvin got it.
EFI specialist
Advanced diagnostics, tuning, emissions
HPtuners dealer and tech support
email=[email protected]
Nope, after the Crank Sensor ReLearn the P0315 is not being thrown, not sure why, have tried multiple times, including in the log's attached.
Specifically --> RVC_LSX_B15_MisFire_AfterCrankSensorReLearn_2_Sep1 22023.hpl
Replaced/Swapped coil after that code was thrown. Old tune file shared, sorry. See more recent logs attached.
Yep, code set in one log - P0355 - cylinder 5 coil or circuit to it.
This is why it's important to post the log and tune. Also why you were failing the crank relearn - it was seeing an issue and deciding it couldn't trust it's own readings. Also why edcmat-l1 is also correct, the misfire re-enabling wouldn't' have worked
EDIT - so recent logs were't posted then????
Problem is definitely bank 1 - you sure it wasn't' a circuit to the coil issue?
Last edited by GHuggins; 09-12-2023 at 03:22 PM.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
I got that code out of one of your recent logs posted 26 minutes ago
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
I would check cyl 5 to see if it's firing the plug. Problem is bank 1 from the looks of it - you need to be logging O2's to really know for sure, but appears bank 1 off of trims.
Colorado's and trailblazers both have very weird OS's. They will fail items or set codes for items down the line instead of what it's actually for, so keep that in mind too. It set a circuit code for 5, but make sure all of them on bank 1 are firing.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Interesting, if I open any log files, then DTC's are not readable?
Only after connecting to vehicle can DTC's be read and the only DTC triggered at the moment is the lingering P0741 "P0741 OBD-II Trouble Code: Torque Converter Clutch Circuit Performance or Stuck Off " issue. That another topic.
Is there a HPTuners licensing issue that limits DTC's from being read from log files?
My license is per vehicle, not the unlimted type that a professional tuner would have access to?
Unable to toggle the P0300 to Enabled?
Is this some licensing issue or the tune is mucked up or some other process to enable the P0300, which I think enables the MisFire detection?
All plugs are firing, "throwing spark" used the inline spark tool to visualize the spark, strength of the spark may be another issue?
All the header tubes get above 180 degrees when measured with "Harbor Freight" temp UV gun.
Have you clicked on log details? I think that some of what and/or where DTC's show up have changed a little bit for the different scanner versions.
Do not have a "log details" menu selection exposed, tried exporting to csv and no data, text strings containing P0
Answering for any others.... Since Suite 5.0, There is "Free" training you have to do and link your MPVI with a device code... --> https://tunertools.hptuners.com/Training/Course/Content
See --> https://www.youtube.com/watch?v=Ma0CkdnDkrw
At the bottom of the page beside channels is log details. Are you saying that doesn’t work without the training/test?
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