Got a problem with my 2001 Explorer Sport (4.0 SOHC). It has about 195k miles. Everything works fine during the winter, but on warm days when running at slower speeds or in traffic, the engine will start cutting out/sputtering, occasionally dying completely. It will start right back up, but then begin sputtering again. It only does this on fairly warm days after the engine is completely warmed up and has been driven awhile. The engine is not running hot or overheating. My local Ford dealer was not able to diagnose anything, but they've not actually seen it happen (because it is intermittent). Anyone else experienced this? It's been an awesome vehicle, but not sure what to do about this one. Any suggestions greatly appreciated!