Hm..... Sounds like a fuel pump is going but at this point you should just do the trial and error - see what's problem. After 100k you would want to do a tune up any way so go from there. Change plugs and wires, air filter, go to Sears or AutoZone and have them check the battery for you, should be free. If the problem persist, at least you'll be left with less potential parts. Hope it's something small, good luck.