Originally Posted by
Kart18
So let me ask this - where can you get a FDV? How much are they? Would one from the junk yard be ok to put on? I can probually get one for $20 or so and put on. I could bypass it to check it but those lines are a pain in the butt to get to and work on. I can say that the fuel pressure was checked while it was running and acting up and it wasn't changing while it was cutting out. Maybe that don't mean anything.
Todd
i found this but it says it will work on all makes and models?
1988 Ford F-150 Fuel Tank Selector Valve | O'Reilly Auto Parts
also i would not recommend something from the junkyard.
what if u happen to get another bad one? u wouldn't get anything accomplished
i still think u should bypass it first instead of throwing another part at it
oh and for the fuel pressure thing i think that what is happening is that the valve is blocking off the fuel so the truck is not getting enough Volume but is still somehow maintaining pressure. Remember the components in our fuel injection systems are stupid, all the FPR knows how to do is maintain pressure not volume. So you may have 30-40 PSI but it may be being pulled/pushed through a very small spot so the truck cant get enough volume witch will cause it to run lean and cut out.
at least thats my theory
