I'm pretty sure it's the fuel pump...there has always been a slight buzz when we crank the truck, but all of a sudden, we don't hear that, and it's acting like it isn't getting any fuel. Is there a site with a diagram that shows exactly where it is and the easiest way to switch it out? Thanks!
Get the service and repair manual from the given link with diagram and fix the fuel pump by your own http://toolsnyou.com/
SOURCE: i need a 2002 ford ranger fuse box diagram and afuel pump relay switch diagram
Hi
go to www.motorcraftservice.com then click on the owner guide and put in your truck information
then choose the 1st owner manual printing and should be between page # 184 to 200.
Good luck and I hope this will awnser your question.
SOURCE: Fuel Pump Relay for 1993 Ford Tempo
it is in the trunk on the left hand side, pull away the trunk carpet on left side and you will see a hole with a top and bottom screw remove the screws and pull the relay out threw the hole, then disconect the wiring connector When you plug the relay back in turn on key you should here the pump run for a few seconds if it does not then replace the relay ,or the pump.
SOURCE: 1985 Ford F-150 Truck (EFI) Fuel Problems
i actually have a 1985 302 efi... there are 2 pumps one one the rail right under drivers door and one in the tank.. there are also two filters... one just behind the pump one the rail.. its actually inside a canister that you open with a oil filter wrench then it has a paper element inside..then there is a inline filter that is actually part of the high pressure line the hose is about 3 feet long and runs from your front pump up to the fuel rail agaist the firewall...this one is really hard to find (Buy) good luck wish i hade a carb
SOURCE: 1985 Ford F-150 Truck (EFI) Fuel Problems
Same problem with my 85 F-150 5.0 EFI---turned out that the fuel pump relay under the hood was teriffically corroded on the inside (I opened up the relay to look inside). When I checked the voltage at the fuel pump it would show 3.5-6 volts instead of 12 volts.
I was thinking fuel blockage or perhaps failure of the in-tank pumps. Sometimes the truck would start and run, othertimes it would neither start nor run. Typically, if running it would stay running until turned off (where the relay had to break).
Changing the green fuel pump relay fixed the problem--12 volts now at the pump and no reoccurance.
Good luck--let me know if this fixed your F-150.
[email protected]
SOURCE: Fuse panel diagram for 1990 ford bronco 2
Here's the diagram for the fuse panel under the dash. There is also a fuse panel under the hood next to the air filter.
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