Fuel Pump questions
Thread Starter
|
New User
Joined: Sep 2009
Posts: 20
Likes: 0
Fuel Pump questions
My son has a '94 5.0 EFI that has a spark but does not start and I don't hear the fuel pump engage. Is there something I should check first, before dropping the gas tank, that may cause the fuled pump not to engage (such as a fuse or connections)? If the pump needs to be replaced, does the job require any special tools. Any tips on getting the job done?
Cargo Master
Joined: May 2004
Posts: 3,007
Likes: 5
There's a fuel pump relay,
I've done the fuel tank remove and replace, no special tools required. There are 8 bolts, It's a 15mm nut and a 14mm bolt head, an electric impact wrench makes short work of the job. Take the filler hose off, the evaporative hose just pulled out by hand. On the 1990 there weren't any special hose connections. The plastic U clamp can be removed with a flat head screwdriver.
I just replaced the sock on the fuel pump and that seems to have solved some issues I was having with engine performance.
I've done the fuel tank remove and replace, no special tools required. There are 8 bolts, It's a 15mm nut and a 14mm bolt head, an electric impact wrench makes short work of the job. Take the filler hose off, the evaporative hose just pulled out by hand. On the 1990 there weren't any special hose connections. The plastic U clamp can be removed with a flat head screwdriver.
I just replaced the sock on the fuel pump and that seems to have solved some issues I was having with engine performance.
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
There are a bunch of things that will cause a fuel pump not to run at all. When a pump dies, it RARELY dies suddenly like you describe so my guess is your pump is fine you just have an electrical problem.
Check the inertia switch under the dash and above the pedals. A hard bump can set it off.
Check the fusible link coming off the starter relay.
Check the fuel pump relay behind the airbox on the driver's side.
Check the inertia switch under the dash and above the pedals. A hard bump can set it off.
Check the fusible link coming off the starter relay.
Check the fuel pump relay behind the airbox on the driver's side.
Thread Starter
|
New User
Joined: Sep 2009
Posts: 20
Likes: 0
There are a bunch of things that will cause a fuel pump not to run at all. When a pump dies, it RARELY dies suddenly like you describe so my guess is your pump is fine you just have an electrical problem.
Check the inertia switch under the dash and above the pedals. A hard bump can set it off.
Check the fusible link coming off the starter relay.
Check the fuel pump relay behind the airbox on the driver's side.
Check the inertia switch under the dash and above the pedals. A hard bump can set it off.
Check the fusible link coming off the starter relay.
Check the fuel pump relay behind the airbox on the driver's side.
-Checked the relay in the fuse box.
-Didn't see a fuseable link coming off the starter relay (I'm assume your talking about starter relay mounted on the front passenger-side fender).
Thread
Thread Starter
Forum
Replies
Last Post
1trik76
1973 - 1979 F-100 & Larger F-Series Trucks
11
Feb 15, 2011 10:56 PM
Prozon
1987 - 1996 F150 & Larger F-Series Trucks
4
Mar 12, 2010 10:44 AM
