Wifes 06 Expy with 130,000 miles on it very randomly stalls while driving. Both occurances have been 6 months apart. While driving at 60 mph on freeway engine loses power. She pulled off freeway to a stop and engine restarted.
No check engine light is illuminated. Any thoughts anyone ???

 

Could be just about anything. I know it sucks to hear this, but until the problem is more consistent you're just going to be guessing at the cause.

 

My 03 does this but a lot more frequently. It might go 2 weeks or a month and then do it 3 times within a mile. I have not diagnosed it yet. I read and read with what others have done and so far I haven't had luck. So far I have replaced the fuel pump with a motorcraft pump along with a fuel tank from a different issue, The fuel filter, and there is a wire that comes from the harness that runs from the battery to the alternator. In this harness there are some smaller wires that split off from that harness that goes back towards the battery tray and plugs into a plug under the battery tray. These wires rub against an AC line and eventually wear through the insulation. I checked mine and it was certainly wearing the insulation off but hadn't worn through. I rerouted mine and re-wrapped the wires. Didn't resolve my issue but didn't cost anything to check. I've read where this has fixed several people issue with randomly dying while driving. My next check point is the fuel pump relay in the passenger side kick panel fuse block. Some have replaced it and others have un-soldered the old and soldered in a new one. I read in one case that a new harness had to be installed to the fuel pump. I will run new wires before I do that. From other reading that the Expeditions with sunroofs will have the drains clog up and they drain to the inside running down the fuse panel. Mine has leaked at one point but water dripped from the grab handle. I just haven't had time to check into this any further since I have read about the possibility of water running to the fuse panel.