my car is ideling very roughly latey but only when im stop at a light, not while in neutral, and also my car seems to "misses" cuasing it to sputter

i already changed or replaced

the fuel pump
fuel filter
cleaned the air filter
did a whole fuel system job
flushed the tranny and changed the gasket

it hasnt thrown any codes or anything im totally pissed any1 have any idea what it could be!!!!

o yea i have an 01 auto

 

bump

 

maybe its the tune, maybe somethin got changed that wasnt suppose to.

 

Maybe plugs and wires would help?

 

Nah i dont think so its been doing a little bit but lately its been doing it alot, but il have them look at the tune this weekend

any1 have anymore idea's

 

ttt

 

maybe the IAC valve...mine did the same thing today and just cut off at the light...it starting idleling really low around 500 and just died...i think its the cold weather here and the engine wasnt warmed up so maybe thats it..i hope so at least; but just try cleaning your IAC valve with carbon deposit cleaner and see if that helps any...

 

so like a seafoam engine treatment?

 

yeah almost like a seafoam treatment...but if you dont want to waste anymore money on the seafoam than go to your local auto store and get a can of carbon deposit cleaner, remove the valve and the tip of it will prolly be totally black from carbon; spray the tip with the cleaner and voila! smooth idle once again...im gonna do it tomorrow prolly when i have a free minute to spare...good luck!

 

IL CHECK IT OUT