SO wich way would you make changes for softer lock up ? I looked at the table but still alittle
thanksconverter lockup
- Thread starter duratothemax
- Start date
SO wich way would you make changes for softer lock up ? I looked at the table but still alittle
thanks
I think you're supposed to lower the numbers to make it lock easier, but it didn't work for me. Still locks the same. I haven't seen any differences in lockup quality from tuning, at least nothing major. Maybe my changes aren't significant enough.
Ben if you keep driving like that I'm going to have to call your parents!
Call me instead. :cool2:
Cindy I downloaded the update but didnt see any new stuff in the allison 5 speed tables?
thanks
Ben
Cindy I downloaded the update but didnt see any new stuff in the allison 5 speed tables?
thanks
Ben
Ross now tells me it missed the install cut. It will now be in the first auto update release.
Cheers
Cindy
Any idea when the auto update will be released
This weekend. It's going to include this parameter, the 6 speed DVT additional option (currently available by single file download), and the LMM Motorhome OS.
Cheers
Cindy
New update is now available. I've downloaded and installed it on my machine, and can confirm that D5072 made it into the release
Let us know how you go.
Cheers
Cindy
Let us know how you go.
Cheers
Cindy
New update is now available. I've downloaded and installed it on my machine, and can confirm that D5072 made it into the release
Let us know how you go.
Cheers
Cindy
Thank you Cindy!!
Been working 13 hour days all week and finally at 6:00 today im DONE and can relax, I get home and read this...what a pleasant surprise. :hug:
cant wait to go out and test stuff tonight!!
Ben
Thank you Cindy!!
Been working 13 hour days all week and finally at 6:00 today im DONE and can relax, I get home and read this...what a pleasant surprise. :hug:
cant wait to go out and test stuff tonight!!
Ben
Ben can you please explain how this table works?
TIA
well now Im not sure this is the table we were expecting...I changed it and it didnt do anything, still takes forever to lockup?
I think its a "single value" table, ie, "do not allow converter lockup if slip RPM is above (x) rpm"
I will play around with it more though.
thanks again to EFILive for making all of this possible, Im not complaining and dont take this as frustration against you guys!!!
ben
I think its a "single value" table, ie, "do not allow converter lockup if slip RPM is above (x) rpm"
I will play around with it more though.
thanks again to EFILive for making all of this possible, Im not complaining and dont take this as frustration against you guys!!!
ben
Has anyone played with H0136?? It says its used in calculating shift stabilization and grade braking features. Grade braking has always been hit or miss, at least on my truck. Sometimes it works, other times it doesnt. I wish I knew how it worked, and what parameters have to be met in order for it to force a downshift.
I cant get answers out of anyone, and the only people that do respond say "you have to be off the throttle for 3 seconds and on the brake for 4 seconds" which is completely wrong.
I first set H0136 to something really low, went out, drove the truck in tow/haul, grade braking was the same (didnt get it to do ONE 'agressive' downshift). Then I set it to something really high, and no change resulted.
I also played more with the D5072 table in effort to get quicker converter lockup, but didnt notice any changes either.
It seems like everything in the TCM is hit or miss. Sometimes it acknowledges the changes we make in the file, other times its like we didnt even touch anything. Its a complicated box, thats for sure.
These changes were all with partial flashes tho. Ive noticed SOMETIMES (once again, another wild card attribute of the TCM), changes dont really take effect with partial flashes....but then you full flash and you notice the change...
hmmm..
ben
I cant get answers out of anyone, and the only people that do respond say "you have to be off the throttle for 3 seconds and on the brake for 4 seconds" which is completely wrong.
I first set H0136 to something really low, went out, drove the truck in tow/haul, grade braking was the same (didnt get it to do ONE 'agressive' downshift). Then I set it to something really high, and no change resulted.
I also played more with the D5072 table in effort to get quicker converter lockup, but didnt notice any changes either.
It seems like everything in the TCM is hit or miss. Sometimes it acknowledges the changes we make in the file, other times its like we didnt even touch anything. Its a complicated box, thats for sure.
These changes were all with partial flashes tho. Ive noticed SOMETIMES (once again, another wild card attribute of the TCM), changes dont really take effect with partial flashes....but then you full flash and you notice the change...
hmmm..
ben
While we still try to find the parameters to control the TCC PWM you could try setting D5070 at 87.5%-100% throttle and warm trans temps to say 90% PWM. In theory what this should do it force the TCM to command 90% PWM regardless of what it has calculated. I'd be interested to hear how that goes if you do. Those tables are sort of sanity checks for it's internal calculations.
Yes the TCM software algo's are very complex, probably why there is not a bunch of aftermarket TCM's out there for them, nobody but the boffins at Allison really knows what is going on!!
Also, a flash is a flash, it can't just change one or two bytes in the calibrations and miss others. Each calibration flash totally wipes ALL the calibrations from the flash, then when it writes back there is many checks to ensure it's all been written correctly.
Cheers,
Ross
Yes the TCM software algo's are very complex, probably why there is not a bunch of aftermarket TCM's out there for them, nobody but the boffins at Allison really knows what is going on!!
Also, a flash is a flash, it can't just change one or two bytes in the calibrations and miss others. Each calibration flash totally wipes ALL the calibrations from the flash, then when it writes back there is many checks to ensure it's all been written correctly.
Cheers,
Ross
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yep one of the very first tune that when into my TCM with guy's help
lowered the MPH when the tcc would engage on normal mode.
set it up so that low tps% it would engage to kill rpms of from the stock TC while cruising arong town. set it up to engage between 10-40% thottle. anything more then 40% it would unlock then lock normaly under WOT conditions. basicly copy and pasted the cells int he said tps range from the t/h to the normal collum
look under TCC you will have apply, release and control(this controls the duty cycle on the soleniod)
the is part throttle tables and WOT tables.
also under wot my TCC doesnt disengage either during shift. with no co-pilot.
also adjust when the TCM goes in and out of WOT tables as well.
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there are 2 speedo in the tcm one for the dash and one for the shifting.
i couldnt find the d5072 in my 02 tcm tune. or the 04 TCM tune that i have.
ross, paul or cindy. are there table that you cna get to that tell the TCM when to downshift to the next gear when under X% throttle when slowing down?
currently all we got is for acceleration.
i couldnt find the d5072 in my 02 tcm tune. or the 04 TCM tune that i have.
ross, paul or cindy. are there table that you cna get to that tell the TCM when to downshift to the next gear when under X% throttle when slowing down?
currently all we got is for acceleration.
That was one of the first things I tried...didnt work.
there is something else going on here that we have no control of.
ben
Do you mean it doesnt disengage under a WOT downshift? So you are going on the highway at 65mph, floor it, and the trans downshifts from 5th to 4th....you're saying your converter stays locked the whole time?? I would have to see a log of that to beleive it.