Time for a good tune up with spark plugs, ignition wires, distributor cap and rotor. Don't forget the air and fuel filters.
A lot depends on when it is sputtering. Is it hesitating under acceleration? That is what happens most commonly in eclipses. It is probably a misfire in one of the cylinders. Change your plugs and wires.
Possibly a hole in the exhaust
try the fuel filter.
More than likely it needs spark plugs and new ignition wires.
OK, why did you put that as a question?
Need to check the EGR valve. It sounds like it is opening to quick.
Hard starting, loss of power, poor fuel economy, and a blowing noise under full acceleration.
Hard starting, loss of power, poor fuel economy, and a blowing noise under full acceleration.
The area under an acceleration-time graph is equal to the object's velocity (not change in velocity).
Acceleration due to gravityThe acceleration produced in the motion of a body under gravity is called Acceleration.
Hard starting, loss of power, excess fuel consumption, check engine light, and a blowing sound under heavy acceleration.
Perhaps a vacuum leak either under hood or under dash Perhaps vacuum booster unit check valve defective