Starves for fuel, with half a tank of fuel and turning a corner

You did not post the year make and model but it could be the fuel pump has come loose inside the tank.

ON outboard fuel tanks there is a valve in the filler cap that you screw in when travelling to stop fuel splashing out. Your problem sounds like that screw is still screwed in and so you are getting a vacuum in the tank which is not allowing the fuel to flow to the pump.

Try leaving the gas lid off for about an hour. Also replace fuel filter.

I once had a 302 ford van that ran really bad going up a hill and I thought the transmission was dying. Turned out that my catylitic converter had broken apart and clogged so the truck wasn't exhausting at all. This will make a vehicle hard start and run bad, so make sure you feel the exhaust for pressure. Seems silly, I know but I've been there.

Before starting the engine, the fuel pump should only run for a few seconds when the key is first turned, to pressurize the fuel system. Even though the pump appears to be running, you may either have not enough or too much pressure for the engine to keep running (fuel pump or pressure regulator). I think it may just be a coincidence the engine quit while turning a corner, but the gas in your tank may have been so low it sloshed away from what is likely a very old pump, starving it and causing it to failure.

fuel pump or fuel filter

sounds like it is starving for fuel. check fuel pump relay to make certain pump is running. if it is, change fuel filter this may help. the best way to check to see if pump is running is to have someone turn car to on, not start. and feel the vibration at fuel tank with your hand. a pump only runs for a few seconds. until it gets pressure to engine. then when engine is running its on until you shut car back off. you may have to turn key on a few times to feel a vibration. good-day!!

The problem is probably opposite of what you think- it is very likely that the fuel pump is bad and the engine is actually starving for fuel. Even though the fuel pump is running and some fuel is getting to the engine, it may not be enough. My Wife's car just had this happen and it turned out that even though the fuel pump was working, the pressure was low.

You can test this by spraying starter fluid into the intake and seeing if it runs good for a few seconds and then chokes out. Don't try and keep the engine running too long with starting fluid, because you can cause damage by overusing it.... 20 seconds, 30 seconds tops is enough to prove if your engine is starving for fuel.

The other thing that will cause the same symptoms is ice in the fuel line- if you have been in very cold weather and allow your tank to run near empty before refueling, you can get condensation in the fuel line that freezes and plugs it up. The best cure for this is to get the car in a garage and add a can of drygas to the tank. This takes patience, because it can take a few hours for results when the car has been out in the cold for a long time.

it sounds like ou may have a weak fuel pump. if all it does is sputter then its starved for fuel. you might also check for water in the tank if theres enough water built up it wont run right

Mine did that to me about 4 months ago. I started by changing the fuel filter it ran great for a month. but by doing that it released all the pressure off of the fuel pump which then went out. If you run your vehicle below 1/4 tank it starves the fuel pump. The pump needs that fuel because; The fuel is the lubrication for the pump. Running your tank down consistently over a period of time will short the pump out faster.