Noisy fuel pump
Thread Starter
Instructor
Joined: Mar 2010
Posts: 220
Likes: 0
From: Deerfeild Fla
Noisy fuel pump
On today the pump on my 2004 with 19k miles started humming. Is there something that I can add to the fuel to quiet it down? I have read other threads that say the earlier vettes 97 and 98 made this noise. Is this normal it was quiet until today. Thanks in advance.
Melting Slicks
Joined: Jun 2009
Posts: 2,913
Likes: 10
From: Jesuit Bend Louisiana
It's humming because it doesnt know the words.
Just kidding - mine make a little noise too, it is a 2004, gets a little more noticable below 1/2 tank of gas. I'm not going to worry about it until the dealership has to drop the tanks for the cracked crossover pipe that others have had.
If it get's bad enough, I'll get a louder exhaust system.
Just kidding - mine make a little noise too, it is a 2004, gets a little more noticable below 1/2 tank of gas. I'm not going to worry about it until the dealership has to drop the tanks for the cracked crossover pipe that others have had.
If it get's bad enough, I'll get a louder exhaust system.
Drifting
Joined: Sep 2009
Posts: 1,868
Likes: 0
From: Tuscaloosa Alabama
St. Jude Donor '10
Thread Starter
Instructor
Joined: Mar 2010
Posts: 220
Likes: 0
From: Deerfeild Fla
I found this info on another site. they said to use 1 oz. of Lucas UCL per 5 gallons of gasoline or Marvel mystery oil, same dosage and it will quiet the pump. Any opinions it s an F body site. I had a Firebird before the vette.
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Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Darn, beat me to it 
I have had a total of three (including stock) pumps and they have all had that irritating hum.
Must be something to do with early fuel system (reg. at engine) compared to the later ones.
I just learned to live with it after awhile
I have had a total of three (including stock) pumps and they have all had that irritating hum.
Must be something to do with early fuel system (reg. at engine) compared to the later ones.
I just learned to live with it after awhile
Burning Brakes
Joined: Dec 2003
Posts: 1,243
Likes: 5
From: Loveland CO
you ever stop next to a GMC truck at a light? HHHHMMMMMMMM loud as hell. if its quiet when the tank if full its because its submurged in the fuel (hides the sound)... The fuel also cools the pump so it could be heat related. I have come to the conclustion that GM pumps are noisy. Unless your having a driveablility problem i wouldnt be to concerned.
S
S
when the boost a pump kicks in to get more fuel for the nitrous
4th Gear
Joined: Apr 2012
Posts: 4
Likes: 0
i agree some with the post that suggested heat. I noticed mine will be perfectly quite and after being on the road a while it will be humming so bad it sounds like it's coming through the speackers. If i stay in town stop and go traffice and it hot out it will start humming quicker. has anybody changed the fuel filter out to see if that maybe causing the pump to hum after working hard because the filter mybe stopping up?
Racer
Joined: Dec 2011
Posts: 268
Likes: 6
From: Barstow Ca
From what I read the fuel filter is in the tank for late 2003 2004 models. (please correct me if I'm wrong) My 2004 I have heard a hum every once in awhile. I assume it's normal and just turn on the radio.
Racer
Joined: Feb 2008
Posts: 364
Likes: 1
From: PA
test
since im a cop, im gonna listen to a retired cop and try the lucas trick. the full fuel tank comment seems to be true too because i only notice the humming when im low on fuel. i will run that test today and let you folks know what happens.
Team Owner
Joined: May 2001
Posts: 25,050
Likes: 1,265
From: Virginia
St. Jude Donor '11
Heel & Toe
Joined: Sep 2012
Posts: 23
Likes: 0
Your fuel pump making the noise is probably the one behind the drivers seat, I had the same problem with my 2004. I added Techron fuel system cleaner, and the noise practically went away. Just make sure youe don't run your car below 1/4 tank, and always put 91 octane when you fill up. I hear the humming sometimes, but it happens so rarely, that I don't even worry about it. If your car stalls or will not start, I would definitely get it replaced.
