my 94 accord EX AT tranny always give me big clunk when i shift from P to D4 in the morning or afternoon when i'm off from work. basically it clunks big time when i move the shift gear to D4 when the ride hasn't warmed up yet...

however, it wasn't like that though.... it used to just adjust the rpm to lower level and started to change the gear to D4 automatically but now days, it just keeps up at the high RPM(when the car hasn't warmed up yet) and changes the gear and the tranny clunks....

what would be the problem? try to change the tranny oil?