TBSS not shifting into 2nd at wot
TBSS not shifting into 2nd at wot 06 TBSS. Has a built trans and a yank 3000. Shifts fine at part throttle but will not shift 1-2 at WOT. I set the rpm and mph ridiculously low but still no luck. The scanner shows the shift is commanding, its just not happening. I'm using hptuners.
Also, after a rewrite entire/ letting the vehicle cool down, it seems the first time we try for a 1-2 it will actually happen. But after that it's no luck.
EDIT:
The only thing I can think is that the TCM is bad or maybe wiring. That or the trans itself???
I tried a heavy throttle (maybe 50% throttle) 1st gear pull, ya know, to maybe give it a little extra time to figure itself out......lol, and still wouldn't shift.
has anybody ran into a similar issue?
Also, after a rewrite entire/ letting the vehicle cool down, it seems the first time we try for a 1-2 it will actually happen. But after that it's no luck.
EDIT:
The only thing I can think is that the TCM is bad or maybe wiring. That or the trans itself???
I tried a heavy throttle (maybe 50% throttle) 1st gear pull, ya know, to maybe give it a little extra time to figure itself out......lol, and still wouldn't shift.
has anybody ran into a similar issue?
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Do you know what it was in the trans that was bad?
Also, when it didn't shift, did it seem to stay in 1st gear or did it seem to shift into neutral?
There are one or two other threads where the OP is reported no 1-2 shift and neither I nor anyone else has given them good suggestions yet.
Also, when it didn't shift, did it seem to stay in 1st gear or did it seem to shift into neutral?
There are one or two other threads where the OP is reported no 1-2 shift and neither I nor anyone else has given them good suggestions yet.
