One of my previous issues, which I thought was an actual transmission issue, may not be, although I still think the transmission in my truck could be due for a rebuild in the future.
Let me preface this by stating that I was considering going back to a 1228062 ecm, but due to the lack of defined parameters available in the xdf for that ecm, I am going to stick with the 1227747 ecm.
In any case, back to the reason for this thread.
I need to get the TCC locking up properly and so far, I've since figured out that with light acceleration, the TCC was locking up too soon, which I think contributed to making me think that there was a tranny issue when I mentioned it a couple of weeks ago.
I've changed that parameter for the 3rd gear lockup and it seems to be shifting smoother without the knocks from hell from locking up way too early.
Now the issue is acceleration that is more than light.
Seems that the tcc doesn't want to lock up until 4th.
Not liking that because it seems the rpm's climb too high in 3rd until it shifts into 4th.
That brings up the TCC 3rd Gear Upper Limit vs. TPS% parameter.
Attached is a data log and bin for example and is a current bin.
I am guessing right now, but based on the data run, I am thinking that upping each cell another 2% might get the shifting closer?
Thanks!
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