sputters only when sitting still
 

Ok so I have a 2001 4wd 4.6 triton it has just recently started sputtering when sitting still sounds kinda like its hittin a very low idle but its stayin right at approx. 700-1000rpm......the check engin light came on and the computer had both o2's ......which normally means mass air flow.......so I replaced it......light is gone and I let it idle for 10-15 to reset idle but its still sputtering........again it does this only when sitting still..........any ideas?

Replaced spark plugs and fuel filter......adding some dry gas today.......fingers crossed

Mine was doing the same thing. Ended up being an intake leak on cylinder 5. Yay!

ok so to date this is what i have done so far.....
fuel filter
spark plugs
EGR valve
EGR valve sensor
Mass Air Flow sensor
sea foam

still no improvment......need help folks.....please

Mine did this a couple years ago, ended up being a vacuum leak

I cannot be sure but this sounds like the Idle Control Valve is not working correctly. I would also check the less likely PCV valve as this is real cheap and easy to change (about $4 and 2 minutes to change).

doing this as soon as i get off the net. im holding off on the vaccum leak for now only because i need to do some research on how to check that myself assuming it can be done. thanks guys ill let you know

Ok so pcv valve......NOT 3.99.......try 21.98.......

Also not the issue

Where did you get a pcv valve that cost $21.98?

This is the pcv valve on my truck it costs 21.98 correct part wrong problem......insert frowny face here......

Attachment 189470

That's rediculous I just replaced mine on an 02 5.4 and it was also like $4. Where did you buy that thing the stealership?