4WD automatic. Shuts down and dies on the highway. Sometimes starts back up- sometimes does not. Honda Parts Counter man, Tony, said this is NOT a "main relay" aka Fuel relay issue- that the relay just needs to work one time, to start the vehicle. On his advice we replaced the Ignition Switch (not the key cylinder, rather a part deeper under the steering wheel, attached to the back of the keyed cylinder. ) The screws on the old one were LOOSE! so we were pretty sure we were onto the answer. Also had seen that it was a common problem. But no, a few drives later the car again stalled driving 60mph. We are thinking of replacing the fuel pump, looks pretty easy but will have to get an aftermarket one, if anyone has suggestions. 17040-S10-C10 is the replacement number I got from an online Honda House, but can't spend $300 like they want! My concern is 1) is there any reason to think the pump is our problem? 2) Fuel pumps I have found online seem to be missing some components, and I'm not clever enough to know whether it's a part I will have to buy separately, or rob off my own fuel pump. Thanks if you can talk me thru this. PS "next time" it shuts down we hope to turn the bolt on the fuel line under the hood- to discover "whether" it has pressure there- or not.