could be a lot of things but sounds like the fuel pump
fuel filter
It could be a plugged fuel filter. Or a plugged catalatic converter. Or a weak coil
the fuel filter has been changed.
Maybe dirty fuel filter.
try both tuneup and fuel filter change
Possible clogged fuel filter.
Try changing the fuel filter.
Try checking the fuel injector and carburetor
Change your fuel filter. If if it only does it when the engine is hot, check for a coolant leak.
dirty filter 1 clean spark plug 2 should run perfect easy to do
If your Ford Aerostar sputters at high speeds, you might have a problem with the fuel injection system or with the fuel filter. You could also have water in the fuel lines, bad gas, or even a spark plug fouling issue.
have the fuel filter replaced. that cleared mine up when it happened.