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My wife has an '03 Ford Expedition with 110k miles on it. It began dying while driving. Usually when stopping or idling. She would describe that sometimes when it began acting like it was going to die she could "give it gas" and it would revive, other times that wouldn't work. It would usually restart after one or two tries. Our local mechanic did a tune up and replaced a coil. During a trip she began hearing a sound of "metal shredding" and the car died and wouldn't restart. She had it towed to a Ford dealer. They replaced the IAC valve. After that the dying would continue but instead of dying right away it would "lose acceleration, and eventually die within a few seconds" Took it to another Ford dealership and they replaced the fuel pump, filter and relay. It would work fine for a few weeks and then start dying again. Another local mechanic noted the error code P0231 "Fuel Pump Secondary Circuit Low" He kept it for a few weeks and was able to get it to die for him once but not again. The dying continued. Sometimes it would work great for weeks, other times it would die continually on the same trip. Took it to a 3rd dealer and they couldn't find anything wrong.
It dies in the cold and in the heat. Usually after driving at least 20 minutes into a trip. Once it dies once it will typically continue to do so until resting for a day or so. Sometimes with a full tank of gas, sometimes with a low tank.
What you describe is the exact issue I have with my 2003 Lincoln Navigator with 180k. I HAVENT attempted any repairs and or replacement of parts yet. After it dies, I typically wait 30 seconds and then it starts right back up. If I attempt to start it immediatley after it dies, the motor just turns over but wont start (must wait about 15-30 seconds). Some days it will die only once, other days 3-6 times all within an hours and then it seems to be good. It may drive fine for days, maybe a couple weeks before it dies again. My idle is only about 650 warmed up, not sure if thats where it should be for this vehicle but seems a bit low to me (could be why the motor seems a lil bit ruff at idle...? not bad but just slightly....
I havent checked the battery wire along the AC line everyones refering to and I havent looked at the fuse panel issue...(i guess the fuse panel is same in lincoln navigators as it is ford expeditions)
My shade tree theory was that "maybe"...just maybe, seeing as I have to wait a half minute or so before it will start back up (I typically leave the iginition key on during this wait time) that maybe I am loosing fuel pressure and with the ignition key on, it allows the pump to build pressure back up, allowing it to start up again. Just a theory and not a diagnoses......?
I guess I will start looking over some of the things mentioned here in hopes of saving some coin.
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