I have a 97 LS400 with 184000 miles. Three times in the last couple of weeks, it has cut out while driving. Does not happen right way, need to drive 15 or so miles, and then it cuts out. Happened doing 60MPH. It does not die completely, acts like it's not getting fuel. Idles, but if you try to accelerate, it hesitates. Starts up fine.