Up to the end of Temple of Doom already? Must be spending a good bit of time on this.
After taking out the guys he sends after you Mola Ram will come after you himself. Hit him a few times to knock a heart off his meter. he'll send more henchmen after you- note one of them has a sword. Kill him and take the sword, then throw it at one of the bridge support lines (aim for the yellow anchor). Once you sever the rope he'll come forward to get wailed on again. keep the pattern up (beat on him, take out henchman with sword, sever rope) and you'll soon move on to "The Last Crusade".