2003 ford expedition low oil pressure light. car keeps turning off. what is going on here? what is it going to cost to replace the pump ?

Unlikely to see a 'Ding Ding' fuse, but you do have 600 other fuses and modules. :>D

Ford Expedition (U222; 2003-2006) fuses and relays

https://fuse-box.info > ford > ford-expedition-u222-20...
Passenger compartment fuse panel - Cigar lighter (power outlet) fuses in the Ford Expedition are the fuses ?37 (Cargo area power point), ?39 (Instrument ...

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You need to find out why you have low oil pressure. It is normal that as engine rpm's increase, the oil pressure will rise- the oil pump is moving oil faster. Even though your light goes out, you could still have critically low oil pressure. There should be sufficient pressure at idle to keep the light off. The light will come on when your oil pressure is almost nil- I believe for some it's as low as 8 psi. Normally, oil pressure at idle is specified anywhere from 15 to 40 psi. You would have to check specifications for your Expedition. To verify oil pressure, hook up a mechanical gauge at the oil pressure sending unit on the engine block. Check with a local shop.

The causes run from easy, simple to budget busting ruin. Low oil level, wrong grade oil, real old oil, oil leaks, internal oil leaks, worn oil pump, worn crankshaft bearings. It was pretty common on older very high mileage cars to have a fluttering oil light at stops and idle. It was time for a rebuild, or time to look for another car.

You really need to be more specific about the problem, but I'll give it a go. Not sure why the guy above even mentioned the PCV (yes he spelled it wrong too, it's a Positive Crankcase Ventilation valve) but that would just waste some oil, that's all. If the engine will not turn over then an automatic sensor is not allowing the starter to turn, and that would be to prevent engine damage. If it will turn over but not start, first thing you should check for is that you're getting fuel and you didn't put something back together wrong. Third possibility I'd suggest is maybe the problem wasn't the fuel pump to start with, and something else was wrong with the engine, because I assume you replaced it because the engine wouldn't start or stay running. Good luck.

is that how to, question,?
or best parts sources?
and is posted in the honda forum.
thats ok some put honda engines in fords.
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Problem with 1992 Honda Accord Oil pump on a Ford Expedition 2003 replacement

Tengo una trocka Ford expedition 2003 le prende la lis de low oil pressure le puse dos botellas de oil y ahora empeso de nuevo a prender esa misma lus espero pronto me den respuesta a mi problema gracias

the oil pump is on the crank behind the balancer and timing chain cover:


REMOVAL

1. Remove the timing chain.
2. Remove the oil pan.
3. Remove the three (A) oil pump screen and cover bolts and the (B) oil pump screen and cover.
4. Remove the two oil pump bolts and the oil pump.

INSTALLATION

1. Clean and inspect the mating surfaces.
2. Install the oil pump and loosely install the two oil pump bolts.
3. Install the oil pump screen and cover and install the three oil pump screen and cover bolts.
4. Install the timing chains.
5. Install the oil pan.

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wow take it back to dealer. it sounds like its been drove hard and put away wet and thats not good at all.

HI ' sounds like a liking fuel pump check valve ,to test install a fuel pressure tester follow instruction on tester ,turn key on don't crank engine over turn key off and back on again note your fuel pressure should be 38 psi to 48 it should keep 20 psi in system after 10 minutes of just siting replace fuel pump if you loose the pressure

ur oil pump may be failin-there r sensors everywhere on new cars-keepin u from starting as safety measure-computer systems r complex n things dont always show on 1 scan-they kinda hav the mindset of a pc