My daughter's 2003 civic has a vibration in motor at low rpm's in all gears. on 2003 Honda Civic

have already replaced all 3 motor mounts. No change

Asked by for the 2003 Honda Civic
Were the mounts Honda parts? If not that is MOST likely your trouble!! I almost lost a good customer trying to save them some money by using aftermarket mounts on a car just like yours, replaced that junk with OE Honda mounts now everybody's happy!!
(Especially the top mount on drivers side.) Start there first.
1 more answer , 1 more comment
POSS TRANS MOUNT. PUT CAR ON LIFT ARE SLIGHTLY LIKE MOTOR OFF MOUNTS AND SEE IF VIBRATION GOES AWAY
thanks for advice. will check