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I have a Yank 4000pt convertor and tuned the lockup myself and all is well its been in for a year now with no problems. The only that is annoying in when im accelerating itll lock in in third gear then unlock right when it shifts to 4th then after a couple seconds itll lock back in. It just kinda jerks you around from lock-unlock-lock and gets annoying. any help?
Subscribed. Reminds me that I have to look at my tune for a lock/unlock issue on downhill coasts.
me personally......I don't have mine lock until 4th gear anyhow and ~40mph. That works best for me around town. Do you have your shift lock "enabled"? Sounds like you don't and it's unlocking for the shift. Also look at your apply and release mph and make sure they're not conflicting with your shift points or something.
I do not currently have that enabled but will do so and see if that fixes it. If i still have some issue i assume that i will need to adjust mph inorder to fix it