Have you done a CKP relearn? Supposedly that helps the ECM to detect misfires accurately.
2004 6.0 NV4500 Tahoe
- Thread starter Dantheman1540
- Start date
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Dantheman1540
Full Access Member
I have not and I want to but you need a Tech2 to do it right?
George B
¯\_(ツ)_/¯
Yes. It makes a world of difference sometimes.
pwtr02ss
Full Access Member
When I was doing all my reading about tuning for the transmission and a stall. I can't remember exactly what I did though. I may have only had it report misfires in gear or above so much RPM. IIRC I just googled "tuning for stall" or something like that.
Like everything, there's a million different ways people do things in tuning. I could have read some BS thats wrong. So far, mine doesn't have CEL and it seems to drive/lock up fine....
EDIT: Open YOUR tune and look at your misfire tables under engine diagnostics>misfires>and look at the tables....
Compare those to the stock avalanche tune I sent you WAY back when. You'll see what I'm talking about.
I didn't want to post your tune....
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I read somewhere that HPT can do it. I’m not 100% though.
pwtr02ss
Full Access Member
I think you can do that with HPT...
thetuningschool.com
How to do a Crank Sensor Relearn using HP Tuners
Wondering how and why you should do mechanical timing changes to your Ford? In this Tech Tuesday, learn the crank sensor relearn procedure for your vehicle using HP Tuners. Learn more about Variable Cam Timing here.
thetuningschool.com
Well you can if you have a F**d for sure!I think you can do that with HPT...
How to do a Crank Sensor Relearn using HP Tuners
Wondering how and why you should do mechanical timing changes to your Ford? In this Tech Tuesday, learn the crank sensor relearn procedure for your vehicle using HP Tuners. Learn more about Variable Cam Timing here.
pwtr02ss
Full Access Member
I didn't watch the video. I assumed the process would be the same for any vehicle. Googled it. Top link. Done. My bad
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iamdub
Full Access Member
I think you can do that with HPT...
How to do a Crank Sensor Relearn using HP Tuners
Wondering how and why you should do mechanical timing changes to your Ford? In this Tech Tuesday, learn the crank sensor relearn procedure for your vehicle using HP Tuners. Learn more about Variable Cam Timing here.
Coincidentally, I was just discussing this a few minutes ago with a buddy that swapped a G8 GT drivetrain (L76/6L80) into an ex-Frito Lay delivery truck (food/kitchen truck for his business). He has EFI Live and says he can do a CASE relearn with it.
pwtr02ss
Full Access Member
You can supposedly do the same in hpt in the scanner functions. Hopefully big d will get his sorted out without having to do it
iamdub
Full Access Member
Just did a quick Google search. It's in the scanner function but not while doing a scan.
OP
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Dantheman1540
Full Access Member
I just got home and I’m dropping a log, afterwards I’ll wrap up the sheets I used to cover my dead plants with and then try this.
OP
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Dantheman1540
Full Access Member
Yeah I think you have to rev to 5k or something.
OP
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Dantheman1540
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Currently, my in gear and P/N fuel cutoff is 6,950, I think I'll drop it down a bit before I do this case relearn.
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Dantheman1540
Full Access Member
Dropped it to 6,500 and did a semi-slow neutral rev up till I felt the limiter kick on, then I let the RPM naturally fall and cycled the ignition which it told me to. I never got any indication that it completed the process or whatever but I guess I will log later and see if anything changed.
**Edit** Did a little more research and it clearly didn't work, it's supposed to set a 4k fuel cut when it's in test mode. Gonna try a couple more things such as holding the brake while doing it and not clicking the "OK" box. Seems people have all sorts of funky issues trying this.
**Edit** Did a little more research and it clearly didn't work, it's supposed to set a 4k fuel cut when it's in test mode. Gonna try a couple more things such as holding the brake while doing it and not clicking the "OK" box. Seems people have all sorts of funky issues trying this.
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George B
¯\_(ツ)_/¯
Seems to me there was something about the parking brake. I have done a case relearn a few time with my tech2 and did fine.
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Dantheman1540
Full Access Member
I think its parking and foot brake needs to be pressed, I'm hoping it lets me do a relearn since HPT always thinks the truck is in 3rd gear and not park which was another requirement I saw.
pwtr02ss
Full Access Member
Can you change that quickly?
OP
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Dantheman1540
Full Access Member
No idea how to do that tbh.
