fuel pump?
Thread Starter
|
Junior User
Joined: Apr 2004
Posts: 89
Likes: 1
fuel pump?
93 f 150 , 4.9 , came out to start and no go , cranks fine , ignition seems ok , have spark , can't hear any fuel pump sound , the relay seems to click , the reset button on passenger kick was not kicked out , reset it , checked ground on the test pin , still no sound , squirted gas into it and it fired immediately , any other ideas before i drop the tank and replace the pump ?
thanks in advance !
thanks in advance !
Postmaster
Joined: Oct 2003
Posts: 4,516
Likes: 1
From: SoCal
Give the gas tank a good whack with your choice: a Ford wrench/baseball bat/your hand.
If it starts after you whack it, replace the pump.
If it still wont start, check voltage at the inertia switch. Should have 12 volts for 2 seconds each time you turn the key from off to run.
If it starts after you whack it, replace the pump.
If it still wont start, check voltage at the inertia switch. Should have 12 volts for 2 seconds each time you turn the key from off to run.
Thread Starter
|
Junior User
Joined: Apr 2004
Posts: 89
Likes: 1
whacked it , to no avail , checked the inertia switch and get the two second power response , pulled the tank and don't have any power in the pigtail that attaches to the pump. swapped relays , still the same ,
Elder User
Joined: Aug 2008
Posts: 821
Likes: 1
From: 50450 IOWA
Trending Topics
Freshman User
Joined: Jan 2007
Posts: 27
Likes: 0
From: Spicewood, TX
Do you have fuel pressure at the test port on the rail? My manual has a test procedure for checking the fuel pump out.... but it's at home.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
The fuel pump relay is located on the drivers inter fender on the 89. No the 89 and the 93 are different.
The 89:
/
The 89:
/
Postmaster
Joined: Mar 2008
Posts: 2,703
Likes: 7
From: Des Moines, Iowa
check the continutity of the wire or trail it back manually to see if you have a break in the wire. I'd also check the high pressure fuel pump on the frame to see if all the connections there are good (if you have one that is... I know my 88's and 89 do). basically make sure all your wiring is good. I've had a mouse, squirrel, or rust eat a electrical wire/connection and impeade the pumps from kicking on.
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 21
From: Caracas, Venezuela
If nothing of the above works, before buying a new pump, check the pig-tail elec. connector that feed the pump, it's above the fuel tank so you'll probably have to take it down (unless the bed latch mod has been done already, then you could easily reach it from there). That's what left me stranded for the 2nd time in 18 years since my family owns the truck.
Thread
Thread Starter
Forum
Replies
Last Post
5oh95
1987 - 1996 F150 & Larger F-Series Trucks
7
Feb 3, 2025 07:10 PM
Kevin McCutcheon
1999 - 2016 Super Duty
3
Aug 4, 2016 11:51 PM
dffdixie
1983 - 2012 Ranger & B-Series
19
Sep 11, 2009 11:02 AM
truckerdad
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
1
Jul 27, 2006 08:18 PM
