Hey guys new here and hope y'all can help.
got a 09 vision with an 485mp8.
recently has started stalling randomly on the middle of the road and has no power at all. First thought was trash in the tanks because there was a bunch of water in them. Cleaned them out best we could changed all filters. Problem has gotten worse. Won't pull our empty low boy 45mph. Starts good cold but hard to start hot. Someone has put an inline electric pump on the truck at some point and my Mech seems to think it's going bad and the factory pump won't pull thru it causing it to die and loose power. But I'm curious why it's even on there to begin with as I'm pretty sure the truck didn't come with one as this one is wired to a switch on the dash. Thanks for any help guys
