Front tank-no go
Thread Starter
|
New User
Joined: Feb 2007
Posts: 3
Likes: 0
Front tank-no go
I have a 1996 F150 4WD 5.8L. I have duel tanks and cannot run the truck off the front tank. I have replaced the front fuel pump and the selector switch on the dash. I cannot seem to locate the fuel selector valve. I know that it is usaully mounted to the frame on the drivers side but there is nothing there. Does my truck not have one of these? If not then how does it switch between the front and rear tanks? Any ideas would be much appreciated.
Thanks
Thanks
Senior User
Joined: Mar 2007
Posts: 279
Likes: 0
From: Vineland, New Jersey
You have 2 seperate fuel pumps, 1 in each tank. When you flip the switch on the dash, you are activating either one pump or the other. They both feed into a single supply line and the return line is the same way also.
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by mnapeterson
I know that it is usaully mounted to the frame on the drivers side but there is nothing there. Does my truck not have one of these?
Originally Posted by mnapeterson
If not then how does it switch between the front and rear tanks?
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Originally Posted by mnapeterson
Thanks,
That helps alot. When I switch to the front tank the truck sputters and dies. I know that it is not the pump or the switch. Could it be the relay or something else?
That helps alot. When I switch to the front tank the truck sputters and dies. I know that it is not the pump or the switch. Could it be the relay or something else?
If you replaced the whole Fuel Delivery Module then look for a pinched line or wiring, if not then you may have to replace the Fuel Delivery Module.
Here are some diagrams.
Wiring:
http://i54.photobucket.com/albums/g91/subford/Fuel/1996FuelSelector.gif
Fuel Delivery Module:
http://i54.photobucket.com/albums/g91/subford/Fuel/FuelDeliveryAssembly2.gif
Fuel Pressure Regulator:
http://i54.photobucket.com/albums/g91/subford/Fuel/fpr02.gif
Fuel Lines:
http://i54.photobucket.com/albums/g91/subford/Fuel/FielSystem.jpg
8 cyl Manifold:
http://i54.photobucket.com/albums/g91/subford/Fuel/Fuelmanifold.jpg
