99 f350 rough idle lack of power

[99strokeit]

i installed the power pup set it to the highest setting of 120 and it didnt do a damn thing no smoke no power nothing took it out and it runs the same rough idle lack of power i was told i am having a fuel problem 65 psi on rails bully dog says fuel filter but i changed it then i was told i have one in the tank can anyone help thanks

[mechanic@ivfire.com]

pull the codes first ...?is your truck a auto or stick ive heard of computer throwing fitts be cause performance chip is trying to change shift schule in a manual gearbox or vise versa!

[99strokeit]

its a auto trans and i have no codes i hooked it up to the snap-on modis and did every test and still nothing

[mechanic@ivfire.com]

OK did this truck run funny before you installed the chip?cause if not it could be the chip
But i dont know the bully dog line of products at all i hav a super chip and have never had one problem out of the one i put in my truck.. I have had problems with one on another 7.3 but that is another story

[mechanic@ivfire.com]

you could have a fuel sucking air problem ...on 7.3 there could be a hundred things that will cause this problem First i would check the fuel lines under the left head for o ring damage leakage then i would checkthe lift pump for leaking but i dont own a 99 mines a 02 and i work on 95-97s all day every day

[99strokeit]

yes it had a weird idle before im gonna try to drop the tank and see if the strainer is clogged who knows i only had this truck a month now and hoping to figure all the bugs out