car *STILL* sputtering, HELP!

[devonkyle77]

replaced 02 sensor, replaced fuel filter, cleaned maf, ran seafoam.

the less gas in the tank, the more it sputters, but it sputters even with a full tank of gas.

generally speaking, the sputtering happens when cruising at around 3k rpms.
also the slightest increase in throttle seems to trigger it, but it has happened without any increase in throttle.

any help diagnosing this would help
thanks!

[stinky_180]

changed spark plugs, wires, cap and rotor? have you checked your codes on the engine control unit?

[devonkyle77]

checked all codes, no check engine light or other codes. checked plugs and wires.
cap and rotor look fine, but should i replace anyway?

[NIK90s13]

If you are due for a tune up, I would. I have to agree with stinky, if your wires or cap are warn, you can loose spark. But it wouldnt be affected by fuel lever though. How is your fuel pump?
I'v never had a pump go out on me, so does any one know if this sound like a pump going out?

[devonkyle77]

replaced fuel pump now too.

[turbozxi]

MAF get one you know works and swap it over to see, my money is on the MAF.

[jdm538]

my car does the exact same thing, i have done everything you have. Plus replaced cap and rotor.

[Nuisance Crew]

Hey did you every figure out the problem?

[devonkyle77]

still not figured out.