Fuel Pump is whining
Dav Coleman
Hi,
I just had my car shipped across the u.s.. When it arrived I noticed
that there was a fairly loud whining/hum coming from the rear of the
car. When trying to locate the source of the noise, I came to the
conclusion that it must be the fuel pump because it was coming from the
rear of the car and sounded like an electric motor. The only other
electric motor I know of back there is the convertible top motor which
didn't seem to be the culprit.
I finally decided it must be the fuel pump in the tank because I can
hear the noise better when I take off the gas cap and listen to the fuel
pipe.
There is no loss of engine performance that I can notice, it's just a
loud and constant whining. (By the way, if I turn the ignition switch to
ON (but not to START) it will back the whining noise for a secod or so
and then stop).
So my questions:
1) does this mean I definitely need a new fuel pump?
2) Is it possible this sudden problem could have occured due to
something that happened while it was being shipped across country inside
of an 18 wheeler rig? I can't think of how, but it just seems hard to
believe it's a coincidence that the fuel pump went out during a period
when it was not being run/driven for 9 days.
3) Someone has suggested I change the fuel filter just in case that
fixes the problem, since that is an easy & cheap job to do and it
couldn't hurt. Is that really worth a shot?
Thanks,
Dav Coleman
--
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http://www.serve.com/dav/
joe webb
ford fuel pumps are only good for about 60,000 miles to 80,000 miles. you
should change your fuel filter every 10,000 to 15,000 miles. if your pump is
making noise then it is bad. i always us the factory ford pump. fords have a
problem with there pumps. but they are the best out there
Rodney E Geraghty
Dav,
Are you sure that you didn't just notice the noise now because you were
checking it a little closer because of the shipping. Maybe it's the first
time you've run it with the radio off? The reason I ask is because these
pumps are notoriously noisy. if you were to do a search on this newsgroup
you would find quite a few postings regarding how noisy they are. The best
(IMHO) advice is that if there are no other signs of a problem then it's
probably just noisy. If you start to notice other problems which might be
connected then get it checked out and changed if required. It is normal
for the pump to come on when you turn the key to RUN position without
starting it. The pump pressurizes the fuel rail and then shuts down until
the engine is actually started.
I doubt there is any connection between the shipping and the noisy pump.
Changing the fuel filter can't hurt (if it's due) but I wouldn't expect it
to silence the pump.
Hope this helps!
--
Rodney E Geraghty
GERA-Tech
Ottawa, Canada
ger...@ibm.net
Dav Coleman <d...@serve.com> wrote in article
<346F748C...@serve.com>...
Dav Coleman
Mariusz Bronowicki wrote:
> Dav how loud is the fuel pump whinning? I drive a 94 mustang v6, and
> since
Pretty loud. At all times when driving it sounds like I'm being tailed
by a model airplane.
> Unless yours didn't whin before I
> don't think it's a problem.
It's never whined before...
-Dav
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http://www.serve.com/dav/
I H8 65MPH
Dav,
ALL EFI Mustangs (86-93) have that whining sound coming from the tank.
Yes, it is the fuel pump. The sound varies from car-to-car. Some may be
quiet, some may be loud to the point it's annoying, but they all have it.
Mine was quiet for a while and then one day it was just a bit more noticeable
even until this day. In my case, I like the sound of the fuel pump. Others
will tell you the same thing. It's nothing to worry about. If it has high
miles on it, expect it to go bad at anytime.
Musttanguy
if your fuel pump is whinning,it is on its way out,they start to make a sound
like you are hearing.
change out your pump
while you have it out i would consider going to a larger pump now
in case you get the bug to improve its performance
i doubt this had anything to do with its transportation
changing the filter will not cure this problem,but suggest doing so at time of
pump exchange.
hope this helps you out ............musttanguy @ aol
Dav Coleman
Thanks for the reply!
OK, so my next question is how important is it to get it fixed quickly?
Can I drive it for a couple of weeks? Well, more to the point, say it's
condition worsens, is the car going to stop running immediately or could
I have enough power to limp to a mechanic?
Since I just made this big move cross-country, I'd rather wait a week or
two to have it fixed....
-Dav
I H8 65MPH wrote:
> Dav,
> ALL EFI Mustangs (86-93) have that whining sound coming from the
> tank.
> Yes, it is the fuel pump. The sound varies from car-to-car. Some
> may be
> ....
> will tell you the same thing. It's nothing to worry about. If it has
> high
> miles on it, expect it to go bad at anytime.
--
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http://www.serve.com/dav/
JVincent
Dav Coleman wrote:
>
> Thanks for the reply!
>
> OK, so my next question is how important is it to get it fixed quickly?
> Can I drive it for a couple of weeks? Well, more to the point, say it's
> condition worsens, is the car going to stop running immediately or could
> I have enough power to limp to a mechanic?
>
> Since I just made this big move cross-country, I'd rather wait a week or
> two to have it fixed....
>
Well, let me tell you my experience. I started to notice my "whiny" fuel
pump in August of 1996. A mechanic I took it to this spring told me that
the fuel pump still had life in it, and that I should wait to change it
until it failed or until the noise became too bothersome. As time
passed, the whining gradually got louder and louder. This winter -- it's
winter already here in Chicago -- the Mustang has had some trouble
starting, and I was getting other work done anyway, so I got a new
190lph fuel pump last week.
It didn't help the starting problem, but at least the whining is gone.
Good riddance.
So if you're just starting to notice the whining now, it's not the end.
Just the beginning of the very long end. From the point I first noticed
the whining, I put about 14K miles on my car, and in the end the pump
was still operational.
(Now watch somebody else post that I was lucky as hell to drive around
with a whiny pump for that long...)
'89 LX 5.0, 127,000 miles and counting
--
WIvaprag/ZIF [JVincent/MVS], Puvpntb, Vyyvabvf [wiva...@zpf.arg]
Ubsfgnqgre'f Ynj: "Vg nyjnlf gnxrf ybatre guna lbh guvax,
rira jura nppbhagvat sbe Ubsfgnqgre'f Ynj."
I H8 65MPH
Joe! WHERE DID YOU GET THAT INFO!?!?!?! Because it's making noise means it's
bad? You must not be too familiar with the pumps on Fords. Reading your
posting, it's obvious your speaking your OPINION and not the facts. 60,000 to
80,000 miles? Please! I guess mine shouldn't be working after 115,000. And
my friend's shouldn't be running either after 187,000 miles on his stock pump.
I think I'll take mine out and pretend that it only had 60,000 miles on it
and brag to everyone to get a new pump on their Stangs.
modstang
although a pump with that much mileage (over 100k) is surely not as
efficient in moving liquid as a brand new one but like they say -
"if it ain't broke--- don't fix it!" ; )
[mods...@usa.net]
[http://www.geocities.com/MotorCity/Speedway/3343] MODULAR MADNESS!!!
*** you guessed it, ace. if you feel the need to reply via e-mail
you must first remove the NOHONDAS from my address ***
Matthew Fleming
JVincent wrote:
>
> Dav Coleman wrote:
> >
> winter already here in Chicago -- the Mustang has had some trouble
> starting, and I was getting other work done anyway, so I got a new
> 190lph fuel pump last week.
Boy, I'm going to sound like a weanie in this newsgroup, but I have to
ask, "Did jumping up to a bigger fuel pump adversely affect your gas
milage?" I've got a '95 GT that I baby (15K miles), but once I get out
of school I'm going for a GT-40 head replacement. Anyway, I've been
aware of the whiny fuel pump since the day I got the 'stang; but having
heard it in other new ones, figured it was in spec. Plus its a rag top,
so I thought that it was just more audible because of that.
Anyway, back on topic. I realize actual fuel usage is governed by what
my ECC tells the injectors to do; but has a bigger fuel pump led to
higher backpressures at the injectors, which in turn has contributed to
worse fuel efficiency? Do you have pre- and post-pump milage numbers?
Have you made any performance modifications?
Any information appreciated.
--
Matthew Fleming
PSU BSME
Bucknell MSME gonna be
, ,
( "\' '/ " ) . ___..-- ' ' '"-._
` 9_ 9 ) `-. ( ) .`-.__.`)
(_Y_.) ' ._ ) `._ `. ``-..-'
_..` --'_.. - _/ / -- '_. ' .'
(il). -'' (( i ) .' ((!.- '
We are..............Penn State!!!
Racingboy
Well, hey, I would say you three are lucky!! I am currently in the midst of
replacing my pump for the second time. #1 ( the stock one) failed at about
65000 and the replacement, a 110lph SVO pump, just failed on me last week. No
warning, just pulled into a srore and when I returned, she was dead!! No
start. The pump had become progressively more noisy over the summer, but that
is not unheard of.....anyway, I am now working on replacing it.......so how
you guys have gotten so many miles out of yours is beyond me!!
-racingboy
89 5.0 LX Notchback
Villiage Idiot
My 90GT has some loud static coming from the back. I know its the fuel
pump, but it's a pain in the ass to change. I hoping it will just go away.
(dreaming) My advice, turn up the radio.
dbug*
On Mon, 17 Nov 1997 19:28:24 -0500, Dav Coleman <d...@serve.com> wrote:
>
>
>Thanks for the reply!
>
>OK, so my next question is how important is it to get it fixed quickly?
>Can I drive it for a couple of weeks? Well, more to the point, say it's
>condition worsens, is the car going to stop running immediately or could
>I have enough power to limp to a mechanic?
>
>Since I just made this big move cross-country, I'd rather wait a week or
>two to have it fixed....
>
>-Dav
>
>I H8 65MPH wrote:
>
>> Dav,
>> ALL EFI Mustangs (86-93) have that whining sound coming from the
>> tank.
>> Yes, it is the fuel pump. The sound varies from car-to-car. Some
>> may be
>
>
>
>> ....
>
>
>
>> will tell you the same thing. It's nothing to worry about. If it has
>> high
>> miles on it, expect it to go bad at anytime.
>
>
>
>--
>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>http://www.serve.com/dav/
>
>
I wouldn't give it a second thought unless the noise bothers you. You
are just as likely to install a noisy pump as not. The pumps are
usually good or they're not. There is a flow/pressure test to ensure
it is doing it's job. That's the only way I would spend the money to
replace it unless it is truly bothersome. You will also notice it
more in a near empty tank. It may be that you have more or less
filled your tank making it fairly quiet. As the tank empties, it will
get a little louder and change pitch. One way to make a pump noiser
is to let your car run low or out of fuel often because the fuel is
what cools the pump.
RJCreel
Better yank it out before it strands you like it did on my 89 GT.
Cool Guy
I have 135,000 km on my pump, and it's finally starting to go. The only mods
I have done to the motor are Moroso cold air induction and 2-chamber
flowmasters. Do I need a bigger pump? It tends to bog a lot lately. Can I
put in a bigger pump like say a 155 without any other mods?
Thanks for any
help.
Racingboy wrote in message
<19971119203...@ladder02.news.aol.com>...
Racingboy
From what I hear, a 155 is probably too big unless you are planning on changing
your intake, injectors, EGR plate and throtle body....or if you are going to a
big nitrous system. The 110 is plenty sufficient for a good number of mods.
depends on what you want to do i guess...I am sure somebody elese will say
something totally different though.
-racingboy
JB
Replace it before it leaves you stranded
Better safe than sorry
--
delete the (removethis) from E-mail address to reply
Chris Matthaei
raci...@aol.com (Racingboy) writes:
OK, I'll say something totally different. :) You can't really go "too big"
with an in tank fuel pump- at least with the ones that are commonly available.
The price difference between the 110 and 190 lph is pretty small, so I say
just go with the 190. You'll probably never have to mess with it again (unless
you get REALLY serious). The 155s kinda have a bad reputation although I have
never owned one. I think they're made by a different company.
Chris Matthaei
Cool Guy
Will there be a problem if I install a 155 or a 190 without changing the
lines or injectors? Will this increase the fuel pressure? Will a larger one
pump more fuel constantly, or only when needed? In other words, would a
larger pump push too much gas, or will it just be capable of pushing more if
the motor needs it? Sorry if I sound like an idiot, but nobody has ever
clarified this larger pump thing to me. I'll go with a bigger pump if I can,
for the "just in case fuel"(if that's how it works!).
Thanks,
Dave
Chris Matthaei wrote in message <65cnq6$lgh$1...@Venus.mcs.net>...
Chris Matthaei
"Cool Guy" <mp...@ibm.net> writes:
>Will there be a problem if I install a 155 or a 190 without changing the
>lines or injectors? Will this increase the fuel pressure?
Nope and nope.
>Will a larger one
>pump more fuel constantly, or only when needed? In other words, would a
>larger pump push too much gas, or will it just be capable of pushing more if
>the motor needs it?
The last part is right. The bigger pump is just has a higher capacity. Any
fuel that isn't injected into the engine just recirculates back to the tank
through the return line, so you don't need to worry about pushing too much
gas.
>Sorry if I sound like an idiot, but nobody has ever
>clarified this larger pump thing to me. I'll go with a bigger pump if I can,
>for the "just in case fuel"(if that's how it works!).
The stock pump is fine for a stock engine (unless the pump is crapping out).
If you're going to replace the stock pump, you might as well put in a 190 LPH.
It won't hurt anything and you'll be ready for future mods!
Chris Matthaei
'91 5.0 LX
13.6 @ 106.5
Barclay H. Hurst
Chris Matthaei <fu...@MCS.COM> wrote in article
<6628c5$fjn$1...@Jupiter.Mcs.Net>...
> "Cool Guy" <mp...@ibm.net> writes:
> >Sorry if I sound like an idiot, but nobody has ever
> >clarified this larger pump thing to me. I'll go with a bigger pump if I
can,
> >for the "just in case fuel"(if that's how it works!).
> Chris Matthaei
> '91 5.0 LX
> 13.6 @ 106.5
Check out this excellent article on fuel injection for the 5.0 by Muscle
Mustangs and Fast Fords online at
http://www.cskpub.com/mmff_folder/tech_folder/mmffuel1.html