MINJSTAT_F Bit Descriptions

[WyoFreeride]

Does Anyone know the Bit Descriptions for the ECM.MINJSTAT_F PID? I am getting a defuel around 3000 RPM, and the Counts goes from 7 to 15 when it happens. Then it goes back to 7 (Bit 4 goes low) fuels, and then repeats. Its currently a CSP tune, but had the same issue with a stock OS (Currently OS 55450202).

I posted the tune (very unrefined at the moment) and logs if anyone cares to take a gander. For some reason the .pld v8 files are not allowed, so the log isn't trimmed to the offending portion. Tune 1 is bone stock and 5 has almost all the limiters removed or maxed, and both do the same thing (just different power levels of course).

Truck is an 07 Mega Auto, with a 6.7 lower / 5.9 head and electronics. It had a Smarty SSR on it, but I started with a VIN Corrected clean file, and it has shown the same symptoms since I started. I've turned off every limiter I can find so far, looking for the culprit. I don't want to just max them all out and go for broke, I'd like to narrow it down and modify the one thats causing the issue.

The truck also has a CoPilot, not sure if that could affect it at all?

I am thinking about trying a new OS to see if that makes a difference, but I don't want to start over completely if I don't have to.

Thanks in advance for looking. -Joe

[2007 5.9]

Best I can see so far is that you have your WOT shift RPM set to 3050..and your {D2015} still enabled.

So given those I can see why it would begin to pull fuel at that RPM.

[WyoFreeride]

Thanks Les, flashing now and will test in the AM. I changed the start rpm up to 3000 from 800 originally, thinking that would help, turning it off was on my list to try. Do you normally turn that off on a truck with the hard parts for extra rpm, and use the commanded fuel tables to limit rpm instead?

The trans points were cut and paste from the old tune. I'm not a trans pro, and he was happy with how it shifted, just was leaving HP on the table and sacrificing drivability with the S06.

I'll test and report back. Thanks for your help and time.

[GMPX]

To be honest we don't know what they all mean, however we use them when tracing through the ECM code hunting down issues, it helps us know exactly what the ECM is thinking.
FYI
7 = What would be a normal unlimited running mode
15 = You are hitting a limiter of some description, something to do with Altitude.

[garrettg.bpd]

Ross do you have more insight on the MINJSTAT_F PID. On a defuel event ive been chasing around im getting status numbers 11 7 16 62 12 53 and 15. Any input would be helpful. thanks

[GMPX]

Sorry, have not looked at it since my post above yours.

[BlackCPG]

Ross do you have more insight on the MINJSTAT_F PID. On a defuel event ive been chasing around im getting status numbers 11 7 16 62 12 53 and 15. Any input would be helpful. thanks

Do you have a log you would be willing to share?

[garrettg.bpd]

17168

[WyoFreeride]

If I remember correctly, I helped my issue with the airflow tables and limiters. I see the final tune for that truck had E2552 maxed out. This was an aftermarket turbo truck, and the defuels looked to be boost related (though I thought they were fuel rate originally)

I'll look through some of my old logs and notes and see what I can find.

[garrettg.bpd]

17171

[kyle027]

At wot my truck is reading 59. Could anyone tell me what limit it is that I'm hitting? Thanks in advance.

[garrettg.bpd]

If you can post a log with the pids I used in the log I posted in this thread. I might be able to help.

[kyle027]

I apologize for the delay but here is a log with the same pid selected.

[GMPX]

We were using those numbers when developing the mapping for these, we use them to trace code paths in the ECM. In fact the first time one of these ran to 5,500 RPM was helped by the use of those State values and being able to trace through the code what limiters were kicking in along the way.
There is a lot of numbers and we have no idea what most of them do, sorry I can't really give you a definitive answer.

[BlackCPG]

Look through your fuel limiters. Could you post a actual tune file and a log file?

[garrettg.bpd]

please do I like to take a look. pm me if you don't want to post it.

[kyle027]

Heres a log and the csp5 tune ive been working on. My truck runs great still puts out some smoke, but im just having some kind of limiter working against me.

[GMPX]

From what I remember '59' was a torque limiter being exceeded.

[kyle027]

ok ill look into the torque limiter. thanks

[garrettg.bpd]

it looks like the gap between desired and actual fuel pressure is to large. that seems to pull fuel out.

[kyle027]

Would I be able to fix that in efi live or is that a sign of a weak fuel system?

[garrettg.bpd]

1751217513 Ive made some changes to your file the first one is some limiters that I find to help and the second one has the fpr changed to help maintain rail pressure if your fpr is modified that helped me.

[garrettg.bpd]

it seems to build pressure a little slow so a little attention to D0787 will be needed. once max rail pressure is achived it is able to maintain. witch looks good.

[kyle027]

thanks for the help garrettg.bpd. ill log some more tomorrow with the changes you made.

[garrettg.bpd]

Kyle thanks for liking my Facebook page and good luck.

[Motorzane]

Try this out and see if this helps

https://forum.efilive.com/showthread.php?t=20333

Look at post #9

[kyle027]

I adjusted that table a while back and it didn't seem to make any difference on my truck.

[kyle027]

I wanted to post an update. I increased a section in my fuel boost limiter and also in the fuel pressure limiter in the middle section of the map and I have almost completely gotten rid of the defuel. Thanks garrettg.bpd for the help as well.

[kyle027]

My truck is now reading 15 at wot. It's a very slight defuel now. But could anyone tell me what 15 would be?

[GMPX]

I think the question needs to be asked another way, perhaps those that tune a heap of these can chime in to what is the 'normal' number they see on a truck that is running exactly as expected.

[kyle027]

I know that normal running condition while accelerating is "7".

[LaydSierra]

So far I've only seen 7 & 16. 7 is believed to be normal & best I can understand is that 16 is the Boost Fuel Limiter.