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Hey guys, this is my first post but I have read a lot on this forum and have found help several times here. My issue now seems to be something in the electrical system causing some weird torque converter symptoms. First off, I have a 1998.5 Dodge 2500 4x4 24 valve with 177,000 miles and a 47re that has been built with a BD Stage 3 kit along with a single disk billet converter that has roughly 22,000 miles on it. It has ran flawlessly up until about a week ago. My issue is very consistent. I can take off with normal throttle from a stop and the transmission will shift perfectly 1st through 4th gear and the torque converter will lock perfectly at around the 45 MPH mark (not sure of exact speed due to 35" tires and speedo not being calibrated), and from there I can accelerate to highway speeds anywhere from 50 - 65 miles an hour with no issue. My issue occurs the second that I let off the throttle and let it idle as if I were coming to a stop and braking. The torque converter will unlock as normal, but for instance if I am going 60 mph and let the throttle go idle for even a split second and then give it more throttle to continue driving, the torque converter never even thinks about locking back up, it will simply rev high in 4th gear and drive. If I do come to a stop (or slow enough to downshift into 3rd), I can resume and shift back into 4th and the torque converter will once again lock until I get off the throttle. Basically, the converter will not lock more than one instance per 4th gear shift. It has never done this before, as normal operation would be that the torque converter locks back up after resuming throttle. My truck has two brand new batteries less than a month old with new and cleaned terminals and I have verified that all plugs on the transmission are clean and firmly pressed into each socket and all grounds are properly connected. Any assistance or advice would be greatly appreciated.

ihave a 01 2500 sport diesle.i put anew tranny and tourqconverter in and after 300 to 400km the tourq will not un lock any ideas