Converter still locking up through shifts...
Thread Starter
TECH Apprentice
iTrader: (4)
Joined: Dec 2002
Posts: 304
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From: Gatesville, TX
Converter still locking up through shifts... I have the Yank 3000 converter in my 02 Z71. I played with some TCC tables and checked "false" on lock up converter through shifts. This is very annoying it feels like a huge bog when going through the up shifts under normal driving conditions. Please help.
Ask me questions If you think I am leaving anything out you would like to know.
Thanks,
Sean
Ask me questions If you think I am leaving anything out you would like to know.
Thanks,
Sean
Thread Starter
TECH Apprentice
iTrader: (4)
Joined: Dec 2002
Posts: 304
Likes: 0
From: Gatesville, TX
Originally Posted by 94form2000z
I am not an edit expert but seems you need to raise the lockup MPH across the board.
Thanks,
Sean
The torque converter never locks in 1st or 2nd gear. Only in 3 and 4 and wont lock on the shifts, stock. That adjustment using true and false only controls if the TC stays locked up when shifting to 4th. It doesnt tell it to lock just for the shift. In other words, if its unlocked before the shift, it will stay unlocked just after the shift, regardless of that setting. Its something else. Torque management plays hell with a bigger torque converter...there are several places you need to remove it in edit.
Originally Posted by Ragtop 99
I have the opposite. I want to try having the converter stay locked on the 3-4 upshift and it won't do it even with the "true" box checked.
Then you have to remember to unlock it when coming to a stop. Most of the time I just leave it in 3rd in town, but if that had worked, I would have used a different shift pattern.
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I think you have to have it locked in (say) top
of 3rd WOT conditions, but you also need to
have lock conditions satisfied at the bottom
(WOT) of 4th. I know the 4th gear TCC profiles
are pretty odd, the lock/unlock line crosses
the shift line twice.
I found it all pretty messy and just eliminated
lockup in 3rd altogether. Can't say as I miss it.
of 3rd WOT conditions, but you also need to
have lock conditions satisfied at the bottom
(WOT) of 4th. I know the 4th gear TCC profiles
are pretty odd, the lock/unlock line crosses
the shift line twice.
I found it all pretty messy and just eliminated
lockup in 3rd altogether. Can't say as I miss it.
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Verdad Gallardo Jimmy:
I had gone through the tables and fixed those issues in the non-WOT lock and shift points set like you suggested. For example, at a given TPS (say 18%), I had:
lock-up in 3rd at 35mph
the 3-4 upshift set for 42 mph.
4th gear lock-up set for 40 mph (unlock at 35 mph),
I don't think I did anything with WOT lock-up.
There must be something else I am missing.
I had gone through the tables and fixed those issues in the non-WOT lock and shift points set like you suggested. For example, at a given TPS (say 18%), I had:
lock-up in 3rd at 35mph
the 3-4 upshift set for 42 mph.
4th gear lock-up set for 40 mph (unlock at 35 mph),
I don't think I did anything with WOT lock-up.
There must be something else I am missing.
