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12-07-2006, 08:28 PM
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#1
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Registered User
Join Date: Apr 2005
Location: Denton/Rockwall, TX
Posts: 2,125
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Is my fuel pump dying?
I have noticed the last few days my fuel pumps hum sound has gotten LOUD and never stops. Could this be a sign the pump is going out? The car has 130k miles and I have never ran it dry since I have owned it. I run only premium fuel. It has been about a year since I did my last fuel filter change, think this could be an issue?
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96 TA M6 - Cammed with an oil leak 
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12-07-2006, 09:41 PM
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#2
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Registered User
Join Date: Oct 2006
Location: northern indiana
Posts: 400
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changing the fuel filter if the pump is weak will kill it. i have seen this a thousand times. my recommendation is drive it till it dies or check the pressure and volume and replace if anything is suspect
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12-07-2006, 11:52 PM
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#3
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Registered User
Join Date: Apr 2005
Location: Denton/Rockwall, TX
Posts: 2,125
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Cool, thanks for the input. Is the extremely loud humming it is making a sign it is going out? It is loud enough I can hear it over my exhaust.
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96 TA M6 - Cammed with an oil leak
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12-07-2006, 11:58 PM
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#4
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Registered User
Join Date: Nov 2004
Location: Garland, tx
Posts: 2,398
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you have gotten under tehre and made sure its the fuel tank for sure right? does it do it at idle and driving?
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94 a4 artic white z28...
old setup...295hp..312tq...1.60 7.60@90.0 (cam only) n2o 1.50 7.05@100 (cam+125)
new setup..365hp 390tq...1.65 7.45@94 (cam only) n2o 1.42 6.42@108 (cam+200) still dialing it in
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12-08-2006, 12:26 AM
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#5
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Registered User
Join Date: Apr 2005
Location: Denton/Rockwall, TX
Posts: 2,125
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It does it at all times. At first I thought it was my radio, but I turned it off and it was still there. It is the same sound it has always made, but it has never been this loud, and usually once the car ran for a bit it would quit, but now it hums non stop.
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96 TA M6 - Cammed with an oil leak
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12-08-2006, 01:08 AM
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#6
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Registered User
Join Date: Jan 2006
Posts: 67
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at 168,000 mine was hard to start. I used my a/c charging hose/gauges to test fuel pump press at injector manifold. After the fuel pump would cycle the pressure would immediately drop. So I put a pump in from o-reillys, after cutting a access hole in the trunk. It starts right away now and holds pressure after shutdown. I would at least cut your hole, and make a access panel in case the car dies away from home. It only took me 30 minutes to change the pump thru the trunk opening.
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12-08-2006, 01:52 AM
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#7
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Registered User
Join Date: Apr 2005
Location: San Diego, CA
Posts: 1,835
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Mine used to have a steady hum, but now it's really shakey and unsteady, I was about to change my fuel filter until I read byron's post. Too bad you have to buy the whole fuel pump assembly nowadays  .
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1994 Camaro Z28 A4 (290rwhp, 320rwtq) [old #'s] - 357ci LT1 - Baby Crane Cam, Ported Heads, 1.6 roller tips, JBA Shorties, 54mm TB, CAI, 3" TSP Rumbler Catback w/ Pypes Race Pro, B&M Tranny Cooler, 1LE Front SB, Rear LCA's, MadZ28 Tune. Built by JBA Racing.
1970 Camaro A2 Z28 Clone Project (0rwhp)
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12-08-2006, 11:46 AM
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#8
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Registered User
Join Date: Apr 2005
Location: Denton/Rockwall, TX
Posts: 2,125
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Yeah my car used to be hard to start after it would sit overnight. Now it starts right up perfect but its loud. And today it wasnt humming. Idk what is up with this thing.
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96 TA M6 - Cammed with an oil leak
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