the stalling might be due to a bad ignition switch as there was a recall on my 99 for it not sure if the 98 is in that recall tho ...I argree with OHS sounds like you have internal damage in the trans.. if you are planing on keeping that car I would get a Honda rebuilt trans even tho we get them from the place that honda outsources their trans to here in N. Cal. and they work the first time around unlike Cottman or Ammco that you will be lucky if it doesn't leak oil all over your driveway as we had seen and heard first hand from Ammco customers that have brought their cars back more them 5 times to get the problem fixed! so drive it until it gets worse then get it replaced as it's not going to cost you more then a tow bill and nada if you have AAA plus