I have a 83 ford ltd . I filled it with gas .The next day I drove it about 50 miles ! It started shugging til it finally stopped ! I then put a hanger down in the gas tank to check for gas ! It had gas in it ! Can you help me ! Why is it shugging out off gas when it has gas ?

I had a similar problem that turned out to be dirt contaminated gasoline. The "fix" was always to replace the fuel filter but it would not stay fixed. In particular, each time I started having problems it was after I let the gas tank level get low.

What I did that you can consider was:

1. But a new fuel filter.
2. Get a 5 gallon gas can.filled with fresh gas.
3. Get some cheap gasoline proof container (or several containers) for waste gasoline.
4. Make a "vacuum cleaner" out of an electric in-line low pressure gas pump, some low pressure gas hose, and a couple of pieces of copper tube, 20 ft of two conductor wire, and two alligator clips. It connects hydraulically copper tube to suck out the gas tank, fuel hose, pump, fuel hose, copper tube to go into the gas can. The wire and clips are to hook the fuel pump to your car battery.
5. Drive the car until the fuel level is low.
6. Remove the fuel pump module.
7. Vacuum the gas tank into the waste gas container through the opening left by the fuel module. Try to get the dirt off the bottom.
8. When you have vacuumed all you can get, stop awhile and let the dirt settle in the waste container.
9. Vacuum the gasoline from the waste container back into the gas tank. Vacuum high in the container so the dirt stays in the waste. Try to wash any dirt in the gas tank to below the fuel module opening.
10. Stop a while and let the dirt settle.
11. Repeat vacuuming and washing as many times as needed to get the tank clean and empty.
12. Inspect the tank interior with a mirror and flashlight looking for rust, dirt, etc.
13. Replace the fuel module.
14. Install the new fuel filter.
15. Pour in the new gasoline.

And hopefully you are good to go.

You need to have the factory security system scanned, it is most likely locking you out due to a fault.

You never leave a car running, as it will
overheat the Exhaust Converter
When you run out of fuel, you sometimes
ruin the Fuel Pump
It depends on gas to lubricate it,as strange as it sounds
Check fuel pressure & volume at the motor with a gauge

Very hard to diagnose without trouble codes, but sounds like a fuel problem - bad gas, fuel filter plugging, fuel pressure regulator acting up, etc. I would certainly check fuel pressure at the engine with key on but not started, and then while trying to start.

On just about every vehicle I have ever seen, the fuel gauge will move faster from 1/2 to 1/4 (I never let a tank run past 1/4. Bad for the fuel pump) than from full to 3/4 or 3/4 to 1/2.
Do a mileage check. Fill the tank until the pump stops, reset your trip or note your odometer miles. Dive a few days or a number of miles. Fill the tank again until the pump stops and not the amont it took to fill. Note the number of miles you put on and do the math.

remove dog house locate test port and install guage should be 45-60 psi

Run a bottle of strong fuel system cleaner through a tank, it's common to get bad gas.

Has Neon do same, I ran fuel at low level, on hot day, ran engine until it started to act up & threw a fuel pressure gauge on it. Was at approx 5 psi. Cold next morning, 48-50 psi. Always hot day about 30-40 miles into work in morning, o.k. Sit in hot sun all day & would happen 3-4 times on way home. Sit and let cool, 20 minutes or so & go again for a while. Cool day, no problem. Change pump I would.

first of all thanks for all the information too many times you dont get enough info to correctly identify the problem so kudos.
i realy think your right one your fuel pressure. but you need to check the pressure dont just replace parts. it could be a bad fuel pump or fuel filter . you didnt say what the plugs looked like . were they black( a sign of over fueling and a bad regulator) or bright white (from lean burn) you could also hace an intake gasket leaking that would cause the lean burn,