First off it's a 1996 F-150 5.8 E4OD.

The fuel pump worked fine yesterday, then got out to the truck this morning and it wouldn't crank. Switched over to the rear tank it fired right up.

Thinking about replacing the fuel pump, filter, and the relay.

Is it hard to replace the pump, I know I have to drop the tank and it's full.

I may go ahead and clean the tank out, since I'll have it down.

 

Job is easy, have done it myself. Full tank of fuel sucks though.

 

yeah for real.

On second thought, playing with it just a while ago, cranked on rear tank, switched to the front, and it studder, sputterd, and tried to run for about 30 sec. I'm gonna start with the Fuel filter, can't hurt nothing. If it ain't that then I'm a step ahead. If it does work, I'm gonna go ahead and get the rear tanks filter as well.

 

We had to do the rear on my truck a few days ago. I had a siphon with a hand pump that I bought at O'Riellys and drained the tank using a gas can,sure made it easier

 

I bet so. I'll keep that in mind if the filter does not work.

 

SpeedRebel09,

I was in the same situation as you are now with my 1990 F150 just a few months ago. I could hear the pump running in the rear tank, but not the front tank.

To empty the front tank prior to the job, I had my wife turn the key from OFF to ON repeatedly as I struck the bottom of the tank with a rubber mallet. The pump started running, and I ran down the tank prior to starting the replacement. Knowing that I had good running rear tank, I was not afraid to drive the truck daily until the fuel was gone.

The unfortunate part is that when I lowered the tank, it was so rust damaged that I had to replace the tank as well; thanks to all the salt we use here. I chose a plastic tank that will last longer than the rest of the vehicle.

Just a thought,

-JR

 

I'll try it, I'm pretty sure the tanks are on thew same filter.

I'm also pretty sure I'm gonna have to replace that pump, the day before it messed up, I turned on the truck to start it, the whine from the fuel pump wasn't as strong as it used to be, I blew it off and went on about my business, got up the next morning nothing.

 

No big deal to change the pump as mentioned, if you have a couple of guys to help...just take off the bed. The front tank is kinda awkward, if it were the rear, I'd say drop it, but since its the front, I had better luck pulling the bed on my dads pickup.

 

I just went through all that on my '88. The front pump did go bad. We replaced the pump, it ran fine for a few months and it started again. I replaced the pump again under warranty and it still didn't solve the problem. During all of this, it ran fine on the rear tank.

I did the following things:

Replaced transfer valve: No help
Replaced transfer switch on dash: No help
Checked pump relay: It was good
Replaced pump ground: Temporarily helped.
Replaced pump power lead: Voila!

Check all your conncections to make sure they aren't corroded before you spend hours of labor replacing things.

Having new parts on an old truck is NEVER a bad thing, but if it ain't broke don't fix it.

Good luck

Tim

 

What ever you do do not use SPECTRUM brand pump from Rock auto and others. Pure junk I replaced my front tank pump three times under warenty and now a year later its makeing noise and the check valves are junk so when i'm on the rear tank it pumps in to the front tank. This means i have to be sure to run down the front tank 1st then swap to rear and drive about 100 miles and the rear is empty but the front is now 1/2 full so i swap back to front noisey tank buzzzzz.......
I'm thinking over the winter i will put back in the OEM pump housing with new pump inside and this time will replumb with a pollak 6 way valve and be done with bad check valves if it happens again.
Do a search on this forum on pumps.

44

 

I may just do that, pull the bed off, it might be easier, I'll have two other guys to help me. We'll remove the tool box, then crawl underneath and see if we can't find all the bed mounts. If we can find all we may do it that way. But if I run out of time I'll look real funky riding around with-out a bed. lol

But before I pull the pump, I'll check my connections

The day before it went out, I turned it on, heard it whine, but noticed the whine was a little weak, didn't think nothing of it a went on about my business.