car sputters really bad

[undecided]

alright so my 1998 gtp is sputtering on acceleration and misfiring when decelerating. i have replaced the coil packs and the plugs and wires were done this winter. i just changed the fuel filter just to see if that may cause it but nope. i just did the entire cooling system flush. when i had it scanned it only came up with a bad o2 sensor error code. replaced both knock sensors replaced the o2 sensor.

could it be a maf sensor? mines looking really sketchy but its been that way since i bought the car and this is a recent problem.
any sugestions? plz help im about ready to trash this thing

 

[dpzelenak]

it could be the maf or the map, have you tried pluging the maf to see if that helps?

 

[Quantum7]

Cat convertor might be clogged. Common problem to check for

 

[dpzelenak]

if the cat was clogged then there would be all around driveability problems

 

[undecided]

i havent tried the maf or map yet and there is no cat on my car =]

 

[undecided]

replaced maf problem is gone now thank you. only reason i didnt do the maf first was because some kid told me maf's rarely go bad and i believed him. thanks again for your help