I've got a 1997 3.0 plymouth voyager with the 3spd, i've been getting a lot of the same symptoms but only the P0740 code. If I replace the torque converter clutch control circuit, will that correct the problem. Would that be the same thing as the transmission computer? On an entirely different subject, how hard it is to replace the latch/locking mechanism on the back hatch? Mine makes a terrible grinding noise and vibrates the whole car whenever its used, which is everytime the autolock kicks in. Thanks for the help!