Can't get past 40% TPS and RPM falls immediately and engine stalls out. I can keep it running but it's like it's hitting the rev limiter or something.
I've attached the scan & tune file.
Any ideas?
Attachment 62506
Attachment 62507
Printable View
Can't get past 40% TPS and RPM falls immediately and engine stalls out. I can keep it running but it's like it's hitting the rev limiter or something.
I've attached the scan & tune file.
Any ideas?
Attachment 62506
Attachment 62507
Are there any DTC's? You are stuck in OL/Acceleration? I would change the Min/Max LTFT values to 1.0 if you want them to be essentially null. 0 is super lean.....
Ed M
Nope. CEL never came on. I didn't check for codes. I was shocked it was doing that. i barely made it back home.
this is strange, nothing noticeable in your tune file. I noticed that your in closed loop as your O2s are swinging but your not commanding lambda. it commanding .99 I didn't even know that was possible and I doubt that has anything to do with your problem. with all my open loop setting stock from the factory it only goes to .99 steadily when im in open loop.
These are some good observations guys. Thanks for your help.
So how do I get back in closed loop? Is there a way to reset the system? Or what items should I check first?
You said closed loop in the first part of your response. You meant open loop right?Quote:
Originally Posted by JBZ
im pretty sure you are in closed loop otherwise your o2s would not be switching. interesting thing to is that right at or before it dies at the end of your log in the OP your WB goes pretty lean and I think it cuts so after that as everything falls of its back and forth between rich and lean. im sure that doesn't mean anything as it looks like there is a fuel or spark cut off. something funky is happening.Quote:
Originally Posted by mr08353
what are your mods?
no...your O2s are switching, but ive never found a way to change the switching from Lambda other then changing the stoich table. and it looks stock from what I can tell and no flex fuel sensor...so it should be 1 not .99 and that's just an observation. not that it matters.Quote:
Originally Posted by mr08353
another observation is that your power enrichment table goes pretty rich then leans out....is that normal for NA?
Cam motion LLSR 236/244 w/ Trick Flow heads, Rotfab CAI, ported TB, Gwatney radius rods, 1 7/8LT, 10% UD pulleyQuote:
Originally Posted by JBZ
He is in Open Loop/Acceleration (check out his log/channel) which is WOT/PE (load) or decel? That is why I would like to see him return his LTFT Min/Max to 1.0 instead of the 0's he has set them to. Could be some hidden software "agenda" we are not aware of trigger by this way out of range values.
Ed M
I didn't even notice that, skimmed right over it. just looking at the log it appeared to be swinging normallyQuote:
Originally Posted by mowton
How can you tell? What numbers are you referring to?Quote:
Originally Posted by JBZ
Got it. It was a grounding issue when I hooked up my WB.
Engine is running great but now I'm confused about how to ground this WB without it screwing things up.
Anybody have a proven ground point or configuration that they would like to share?
Thanks in advance...
Most of what i see is to get as close to the source that the pcm uses as possilbe and im pretty sure that is dirrecty to the battery rather than to a body panel. I think that ls the best solution for as small of a ground offset as possilbe next to using an canbus compatable wb.
Doggone. Battery is in the trunk though.Quote:
Originally Posted by JBZ