Compression Ignition Addict
Join Date: Dec 2007
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35-40 mph vibrations update shudder???
I have been posting on this a while. I replaced the tc, had lots of driveshaft work etc. Replaced an injector.(swapped idm's)
I am now finding out that once i get to just under 1/2 tank it runs with this vibration and shaking(more of a shudder). It feels like a bad injector or a failed converter.
3 times now, i have gone and filled it back up and it seems to improve(after a few miles with the full tank).
I am thinking the in tank(hutch) mod needs to be done. I am wondering if I am sucking air into the lines at 1/2 tank and below?
I read that if theres an issue, its at 1/4 tank where it takes on air into the fuel system.
If it was the lines going to the fuel pump causing this it would o it at full tank too. I will fix that line also but i think if this is correct its internal tank??
2008 6.4 f250 lariat 4wd