My fuel pump hums almost constantly after starting the truck. I also sometimes have trouble starting the truck like it is not getting enough gas. BTW 92 EB 351 121k. I have heard that the fuel pumps are quite bad on these trucks but it runs great once I get it started. The only problem while it is running is the hum. I have not replaced the plugs or the wires yet to try and fix the starting issue. But I am concerned about the fuel pump crapping out while i drive it daily. I took my father-in-law for a ride in it tonight and he thinks it is the fuel regulator go iffy causing the pump to run at weird times. Any ideas? Thanks for your help.

 

The constant humming is a definite sign of a bad fuel pump.Mine started that way,then started sputtering like it was out of gas all the time.Changed the pump out and it ran perfect again.Probably my own fault for running it on empty all the time!Ive heard that will burn them out quicker.

 

Yeah, I will probably change it out anyway, but I won't to change the regulator and the filter first, I am sure these have never been changed with 120k. Does anybody have any ideas for an aftermarket out of tank pump. I don't want to cut a hole in my floor boards if I have to change this tank more than once.

 

The fuel pump in my Bronco hums too. It has since I bought it 3 years and 15,000 miles ago. I talked to several shops about having it replaced and they said that there is no guarentee that the new fuel pump will not whine either--so I just left it alone.

Jon
1989 F-150 XL- 4x4, 302, M50D
1995 Bronco Eddie Bauer- 351W, E40D
Finally got around to creating a gallery...check it out

 

Having worked for Ford forever I have heard so many noisey pumps. I tell customers that most pumps make noise. If its a deep noise I would worry more than if its a high pitched hum. In 1990 they went with a new design in tank pump and they do much better than those 89 and older with the 2 pumps. Stay away from parts house pumps. to install those you have to remove the ford pump from its mounting which is in a plastic housing. I have done those pumps on mustangs ans some times you get a louder pump. I had a 1990 5.8 bronco and I think I still have a new in box ford pump I got for a spare. If ford tells you 92 takes the same I got one here in southern Ca. Norm.

 

I might have to make you a deal on the pump. What I have to consider is that this is my daily driver and I need it to keep running. I wonder if I should take the chance that the pump will crap out on me. I am thinking about replacing the fuel regulator first. What signs should I look for that the pump is actually going bad, besides the hum?

 

The hum is totally normal and all pumps will do it. It'll be louder when the tank is low on fuel (gas muffles sound, eh?). A sign of a bad pump would be stalling, particularly under hot or hard driving conditions. Letting it sit for 30 minutes will oftentimes result in the problem disappearing (temporarily).

Napa pumps will treat you good, all others are questionable (other than OEM of course).

 

My fuel pump whined before it gave out on me. I remember my tank had to be dropped just to replace it. They also replaced my fuel filter while they were down there. Thank god I had extended warrenty. I only had to pay $50 bucks, the total on the bill was about $350.

 

alright it sounds like I shouldn't worry about it too much for now. I did notice that when the truck is warm I have a hard time starting it. Not horrible though it will take like fifteen seconds for it to start. I tried turning the key on then off then on again and that works. Sorry to ask again but should I be worried about that.

 

I have had two broncos, a 1993 and a 1995. Both fuel pumps haved hummed a lot. The 93 I bought new and when it started the day I bought it, I took it to the dealer who told me it's normal, they would change it if I requested, but most likely it would still humm. Had that bronco for 3 years, never a fuel problem. Same with my 95. It has hummed since day one and it's got 112,000 miles on it. So far never a fuel problem. (I better knock on wood).

 

I heard that the fuel pump has to have 1/4 of gas to keep it cool, if you constantly go below that it will shorten the life of the pump. The two pumps on my f-150 do the same, and one pump on my old f-150 was loud and the other was quiet.


Primary rig is Green Thunder:
95' F-150 XLT 4x4, 302, 5 spd, MSD 6A, Sunroof, CD player with 2 10" subs and some 32" BFG Muds .

Check out my Gallery for a look-see.


Then theres:
99' Mustang GT 4.6L
88' F-250 Superduty 4x4 351/c6
95' Mercury Cougar 4.6L V-8
80' E-350 300/6 with a
3 spd column shifter. Top speed is 65mph, Go Baby Go!

 

On my 90EB 5.8 the fuel pump always made a winding noise
upon turning of the ignition key. It makes that winding zip noise
for about 10 seconds and then stops. One day it quit doing that
and I replaced it with an auto parts store part, AutoZone I think,
with a lifetime warranty. Called the dealer and they wanted
$600 labor. Said nope! Took it to the neighborhood
mechanic who charge me $90 for the labor to drop the tank
and put the part in. That job was done about two years ago.
It sounds just like the original unit. I wonder why Oldfordtech
advised against using auto store part???

The fuel pump from a local dealership was over $250,
and A-Zone it was ~$120.

I think that running it with a semi-clogged or clogged
fuel filter could shorten life because current goes up
when it needs to work harder, then the brushes and
commutators go quicker.
As far as the quarter tank of gas or more to keep it cool,
I would think that as long as you have gas in the pump
and it is not running dry, you are not risking much,
Running it dry, I wouldn't do that.

I didn't do this either but,
Here is a way of NOT removing the tank to do
the R&R of fuel pump:
http://www.homestead.com/90bronco/FuelPump.html

Ron
90eb5.8wE4OD 192kmi

 

>I wonder why Oldfordtech advised against using auto store part???

Because stories like yours are the exception, not the rule.

>The fuel pump from a local dealership was over $250,
>and A-Zone it was ~$120.

U get what you pay for. NEVER be fooled by Autozone's lifetime warranty, it does not mean the part is reliable, it just means you'll be warrantying and replacing it each year.

 

H.
Its been over two years (~72,000 miles) since I had the Fuel pump replaced. It looks and sounds like the OE unit.
I don't believe Ford manufactures their own FP. I'm not saying the one I got is the same manufacturer as Fords, but it sure looks & sounds like the OE unit. I just wonder how the auto parts stores can make any money on un-reliable parts (as you put it I will be replacing it every year) and give a LT warranty? They do know that they are selling it to a do-it-yourselfer and that they will come back for that replacement part, right?

BTW, I do believe in those lifetime warranties. The Borg Warner ignition wire set I bought at one of those auto stores; they have replaced them over six times in the past eleven years. If they want to give me more parts, I'll take them. I can't help it if they don't hold up when you pull the boot off a plug and the c-clip is still on the plug.

Little stuff like that I don't mind buying non-Ford and getting that LT warranty. The big ticket items I do buy from Ford Motorsport like GT-40 heads, or a 351W Sportsman Short block.

Unless you own stock shares in Ford Motor Company, let your Wallet, guide your purchasing choices.

Ron
90eb351wE4od 192k

 

>I just wonder how the auto parts stores can make any money on un->reliable parts (as you put it I will be replacing it every year) >and give a LT warranty?

First off, they're shooting for quantity of sales, not quality of products. Low prices generate sales to unsuspecting customers. Low prices draw you in the door once you hear that price over the phone.

Ever wonder why Napa's prices are relatively high? Ever wonder why most reputable shops (IMO/IME) use Napa or stuff straight from the dealer? They don't want it coming back.

Ever wonder how Autozone can sell a fp for $140? Same way you buy a shirt for $5.99 at Wally World, overseas slave labor and piece work.

Second, they're hoping you'll forget where you bought it.

Third, they're hoping you'll sell the vehicle before it dies (warranty technically does not extend to new owner, plus he/she would have to know you purchased that component at a given chain and know the sellers' home fone #).

Fourth, they're hoping you use it for awhile, figure out it's crap and go someplace like Napa to get a quality part. ie you just give up

>They do know that they are selling it to a do-it-yourselfer and >that they will come back for that replacement part, right?

See above.

>BTW, I do believe in those lifetime warranties. The Borg
>Warner ignition wire set I bought at one of those auto
>stores;

So do I for things like plug wires and brake pads/shoes. For things that can leave you stranded, it's just not worth it. Ditto for things like master cylinders (of which I went thru 5 from Autozone).

>Little stuff like that I don't mind buying non-Ford and
>getting that LT warranty.

I don't consider a fp a little thing, it's a show-stopper. That's just me I guess. As much as I'm in the middle of nowhere w/a bunch of Jeeps that have no spare parts for a rig like mine, I run a quality fp AND carry a spare.

>Unless you own stock shares in Ford Motor Company, let your
>Wallet, guide your purchasing choices.

I'm as poor as the next guy but I've learned/am learning where you can try to save a few pennies and where it's not worth it. I'm glad your luck has been better than mine, pick me up a lottery ticket, would ya?