7.3 indy help

[travis182008]

iv been to 4 different shops and no luck. my truck has a vibration at idle when warm . a pulsing feeling that comes and goes every couple seconds. when i take the icp off its fine so i replaced it and all that and no luck.. does anyone know the 7.3 real well in the indy or close to the area? just need some help. thanks

[dhanna6powerstroke]

What all have you replaced? Just the ICP sensor?

[blue99stroker]

id check fuel pressure

[travis182008]

i took it to ford and they replaced the wiring and icp, myers garage did a new #8 injector. replaced the cps and still nothing.. haven't checked fuel pressure yet. i bought it a couple months ago and it had a lot of dirt and crap in the fuel bowl and it started running bad like the injectors were going out then i cleaned it good and it straightened up and i put new synthetic oil in it and the vibration started. its like a pulsing you can feel and it runs rough around 40-50 mph. but still when i disconnect the icp i clears up the pulsing feel but it does run a little rougher

[travis182008]

thanks for the help guys.. where could i get a gauge to check it? i don't have one or a AE to check codes but ford said no codes were coming up

[dhanna6powerstroke]

What year truck?

[travis182008]

i was thinking the injectors might be scared up bc the crap in the fuel could that cause it? or a hpop problem or ipr or fuel pressure?... the truck was sitting for years when i bought it and they drove it here and it sucked crap up into the motor i think that may me a factor,, the only other thing i did was change from conventional to synthetic that couldn't do it could it?

[travis182008]

sorry its a 01

[dhanna6powerstroke]

Does it have plenty of power when accelerating and just run rough or does it fall on its face? Are you running 15w40 synthetic?

[travis182008]

I'm running the rotella t6 synthetic in it now.. it was just regular 15w40 I'm sure in it its whole life...it seems to wrong strong but right in the 40-50 range it just feels shaky and not as strong and smooth.. if i really step on it and run through the gears fast and get up to 60 quick i don't feel it. its when i cruise and slowly get around 40 it starts to do it..i imagine that and the weird vibration are connected.. i thought it was the icp til i got a new one and it still does it and it stops when its unplugged ..im stumped and no one seems to know what do do where iv taken it before