converter lockup
- Thread starter 1chevy02
- Start date
what are the specs of the truck? transmission? there is a known lockup problem with certain Suncoast Converters.
no...that doesnt fix it...the root of this problem is beyond anything we have control over in efilive.
(it is within the TCM though)
paint94979 said:
:beatdeadhorse:
WHY do people continue to bash Suncoast blaming their converters for programming in the TCM that's inhibiting lockup?????? Even the "wonderful" 5-star has been reported as having that issue without the Co-Pilot. The problem ISN'T that the converter isn't locking up, it's that the TCM ISN'T COMMANDING IT.
Disclaimer: I do not have a suncoast converter, just calling it as I see it.
i actually don't know the exact brand of converter as its not on my truck. Mine works fine its on a friends who i ve been trying to help out. If accelerate gently up to 30 mph with t/h and it locks then hammer down it will lock nicely in all the gears. Without t/h or from a dead stop on a 500ish rwhp tune if you hold it down no lockup till you exceed 70 mph. Would it work to copy and paste tables 5010 through 5013 (tcc apply tables) t/h into the regular mode and leave the release the same. How low can you go? or does that not help? I've just been baffled as this is the second one that has done this. It only does it certain times and i've never messed with trans tuning and am a little nervous. Do the lockup switches help?
A more accurate statement that can cover converters from all manufacturers that have the issue (ANY converter from ANY manufacturer that's "loose enough" can have the issue) would be "there is a known interaction between certain converters and the TCM that causes the TCM to inhibit or delay lockup." Your post may not have been "Bashing", per-se, but it was defintely negative press.
1chevy02, fill out your sig with your truck's specs so we can see what you have and get an idea if your problem may be related to the converter/TCM interaction or something else.
Edit: It does sound like you're having that interaction issue; Unfortunately, there's not much that can be done besides getting an ATS Co-Pilot, Brayden's Lockup Controller, or a tighter converter.
1chevy02, fill out your sig with your truck's specs so we can see what you have and get an idea if your problem may be related to the converter/TCM interaction or something else.
Edit: It does sound like you're having that interaction issue; Unfortunately, there's not much that can be done besides getting an ATS Co-Pilot, Brayden's Lockup Controller, or a tighter converter.
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Not to but in, but I recently put a new Suncoast converter in my truck, I swapped out a Suncoast for another Suncoast, I asked alot of questions of everybody, from Ron at Suncoast to other members here and Mike L. I thought that certain SC converters were having issues locking? I wanna say even Suncoast told me this, I had alot of questions for everyone considering I wanted to go fast but still plow snow. The reason I have a 1056 and not a 1054 or something that loose.
Like I said not trying to start a war just what I remember hearing. I am very pleased with the Suncoast trans and converter I have along with a few other pieces I have bought from them.........
:thumb:
Like I said not trying to start a war just what I remember hearing. I am very pleased with the Suncoast trans and converter I have along with a few other pieces I have bought from them.........
:thumb:
If you had a suncoast converter and made over 600hp then maybe you would have more insight on the situation
Mine with a ML converter locks in second at roughly 32MPH any time I mash it to the floor. There are ALOT of variables in the TCM we can't change with EFILIVE unfortunately, but there are aftermarket options out there to get around most of them though. It would be nice to find somebody with the new ALLISON RE_FLASH software and to get ALLISON's blessing to use it on the 3500 and smaller market, but every ALLISON dealer I called said they couldn't touch it due to the EPA and the different emissions compliance that light duty trucks have to meet. Spent quite a bit of time lately learning and talking to ALLISON people while working the bugs out of my swap.
I know that....thats the problem that everyone has...
no...that doesnt work. There is an additional "override" table that dictates if turbine vs. input speed difference (slip) is over 600rpm, the TCM will not lock the converter. It doesnt care if D5010 and D5013 are set to 2mph or 200mph, if tcc slip rpm is over 600, its NOT going to lock.
welcome to the wonderful world of the stupid allison tcm. Do lockup switches work? Yes. But they are 400 dollars...
ben
exactly right Dave...doesnt matter what name is on the converter. Its not the converters fault when everyone ASSumes it is. Well it is, sort of, but not really...
That may be, but again, the TCM simply isn't commanding lockup because it "sees too much slip". Throw a Co-Pilot or Brayden's Lockup controller on there and it'll lock when it's told to.
Ben...so what we need to do is ask efi to find the tables for us so we can ourselves tune it so we can have lockup right? The table must exsist it's just a matter of having it.
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correct Steve.
Ive brought it up every couple of months for the past few years, but in reality the EFILive crew is too busy. Its not a big deal for me now, I havent been to the track in almost 4 years and have kind of given up on competition stuff.
If I ever get back into it ill either just buy brayden's lockup controller or start begging the efilive crew again.
of course with my luck ill drop $$$$$ on brayden's lockup controller, then efilive will find the table, making brayden's lockup controller obsolete and therefore not worth anything as far as resale.
ben
I'll go beg too!correct Steve.
Ive brought it up every couple of months for the past few years, but in reality the EFILive crew is too busy. Its not a big deal for me now, I havent been to the track in almost 4 years and have kind of given up on competition stuff.
If I ever get back into it ill either just buy brayden's lockup controller or start begging the efilive crew again.
of course with my luck ill drop $$$$$ on brayden's lockup controller, then efilive will find the table, making brayden's lockup controller obsolete and therefore not worth anything as far as resale.
ben