-
Tuner
0411 swapped 7.4L 4L80E 4WD Low Stuck In First
Truck runs through the gears in 4WD high but not low. Stays in first. Another problem is it shifts in 2WD as I wish and then the TCC locks which is what I want. I let off throttle and it unlocks but will not relock.....??? I will post a tune tomorrow if anyone is interested in helping!
Thanks!
-
Tuner
-
Tuner
I have options to change values in 4wd low and high. I do not get any shifting in 4wd low.... Am I missing something? I don't think I have a 2wd trans tune, do I?
-
Tuner
i would monitor speed in 4lo and check compared to commanded table. commanded seems kinda high.
as for lockup , your file unlocks anything less than 50. i got a stock file from repository, i think it was 35. dont have a log file so not sure what speeds we are talking
-
Tuner
also any kind of misfire will hold tcc off generally
-
Tuner
would all stock files with a 4L80E trans be the same numbers? That way I can copy and paste it over
-
Tuner
I dont think so, going to be different depending on gear package. have you tried the bluecat trans calculator?