have a 2007 ram 6.7 when i am coming to a stop it acts like it jumps back to second and lungesanyone know why i replaced torque convertor and flused tranny about 5000 miles ago

 

my 6.7 has always took spells of doing that. its not as bad as it was when it was new.

 

typically any lunging hard in off throttle situations is accredited to a messed up torque converter or torque converter lock up circuit. How much power are you making with your truck right now? What tuners if any are you using right now? Do you have a transmission tune done to the TCM?