fuel pump getting into speakers.

whtstang97 · March 9th, 2010, 07:36 PM

Finally got around to connecting the amp for the system, but at first the amp wouldn't turn on. If its not one thing its another with this car. Always something going wrong. Got the amp to turn on. Now to test it out. Raised it half way and sounds clean. Lets take the cruise. Now I started the car and all you hear in the speakers is the buzzing of the fuel pump going off. EHHHHHHHHHH

Then at the every light all you hear is that annoying buzzing noise. How do you fix that? What went wrong? how come when the cars not on it sounds okay?

mike-oat · March 9th, 2010, 07:59 PM

Probably somethignn electrical shorted out. The fuel pump in my car keep shutting off every minute on me and cant figure out whats doing it.

330CubeGt · March 9th, 2010, 08:02 PM

40 PSI Speakers?

wraitherx · March 9th, 2010, 08:04 PM

How do you know that its your fuel pump making the sound? Where did you run your RCA's? With the power wire or seperate? Where did you get your ground?

wraitherx · March 9th, 2010, 08:05 PM

Originally Posted by 330CubeGt

40 PSI Speakers?

whtstang97 · March 9th, 2010, 08:35 PM

The rca's are on the passenger side and the power on the driver side. The amp is under the driver sear and the groung is on the bracked where the rear bottom seat goes plugged into, took a bolt off and scratched the hell out of the paint. not sure still what it could be.

maxium · March 9th, 2010, 08:39 PM

Maybe your head unit isn't grounded properly. Is your head unit original or after market?

BAD98GT · March 9th, 2010, 08:43 PM

move your ground. put it by itself and away from other wires that have power in them, also check to see if your rca's are near any wires that send a signal(power). run the rca's a few inches away from other wires, if possible

whtstang97 · March 9th, 2010, 08:47 PM

Kool thanks man, will do. How would I know if the stereo is grounded right?

maxium · March 9th, 2010, 08:52 PM

Originally Posted by whtstang97

How would I know if the stereo is grounded right?

Well, it depends if it's aftermarket or not, but usually it's the black wire that gets bolted to the metal beam behind the head unit. Make sure it's clean and actually on there. Try out what the other members suggested first since it's easier access to your amp. It's just a process of elimination at this point.

wraitherx · March 9th, 2010, 08:59 PM

Originally Posted by BAD98GT

move your ground. put it by itself and away from other wires that have power in them, also check to see if your rca's are near any wires that send a signal(power). run the rca's a few inches away from other wires, if possible

exactly what he said. If they do have to come close to each other make sure that they intersect at a 90* angle.

Blower Head · March 10th, 2010, 10:02 AM

Another ground to check is at the wiring for the speakers. I paid a shop to install a stereo for me years ago and had a noise when the headlights were on. It ended up that one of the connections at the speaker were grounding out. That was the last time I paid someone to install a stereo for me!

whtstang97 · March 11th, 2010, 03:36 AM

Well today changed everything around, put the ground in a new place, nothing. Tried out new rca because the old one's had a cut in them. nothing. I'm figuring that its the amp that's no good because the buzzing, fuel pump noise is only in the speakers the amp is connected to when I disconnect the amp all the other speakers sound fine. The amp used to do the same thing with some subs but it wasn't as noticeable, right now its the highs and super annoying. Anybody reassure me that it could be the amp or what else do I check? The stereo is grounded, I think. The black wire goes to some connector. Should I just throw the amp away? what do you think?

maxium · March 11th, 2010, 02:26 PM

I wouldn't throw the amp away just yet. Do you have another amp you could try out to eliminate the fact that it's your amp that's messed up or not? Even if it's not a car amp, you could use a home theater amp or something (with a long extension cord) and try that out. (unless you actually have to drive the car to hear the buzz)

March 9th, 2010, 07:36 PM	#1
whtstang97 Regular 1997 Mustang Gt 13.76 @ 102.5mph Join Date: Apr 2008 Location: Texas Posts: 111 iTrader: 1 reviews	fuel pump getting into speakers. Finally got around to connecting the amp for the system, but at first the amp wouldn't turn on. If its not one thing its another with this car. Always something going wrong. Got the amp to turn on. Now to test it out. Raised it half way and sounds clean. Lets take the cruise. Now I started the car and all you hear in the speakers is the buzzing of the fuel pump going off. EHHHHHHHHHH Then at the every light all you hear is that annoying buzzing noise. How do you fix that? What went wrong? how come when the cars not on it sounds okay? __________________ Pi Heads, BBk Longtubes, 3.73 Gears, Mac pulleys, CAI, Short shifter, Intrax Springs 13.76 @102.5mph 14.0 @ 99mph npi 12.6 @ 108mph w/75shot

March 9th, 2010, 07:59 PM	#2
mike-oat Newbie 1998 Mustang GT Join Date: Mar 2010 Location: Southeast Missouri Posts: 47 iTrader: 0 reviews	Probably somethignn electrical shorted out. The fuel pump in my car keep shutting off every minute on me and cant figure out whats doing it. __________________ michael oatman

March 9th, 2010, 08:02 PM	#3
330CubeGt MM Fanatic 1994 Mustang 5.0 1996 Mustang V6 Join Date: Dec 2007 Location: Orlando Posts: 4,866 iTrader: 14 reviews	40 PSI Speakers? __________________ -04 IRS - Magnaflow - Wheel Replica - Autometer - FTBR - FRPP - SCT - Brembo - PRO 5.0 - BOI-

March 9th, 2010, 08:04 PM	#4
wraitherx Moderator '99 SVT Cobra Join Date: Nov 2006 Location: Virginia Beach, VA Posts: 9,567 iTrader: 11 reviews	How do you know that its your fuel pump making the sound? Where did you run your RCA's? With the power wire or seperate? Where did you get your ground? __________________ BUILD 2 IN PROGRESS

March 9th, 2010, 08:35 PM	#6
whtstang97 Regular 1997 Mustang Gt 13.76 @ 102.5mph Join Date: Apr 2008 Location: Texas Posts: 111 iTrader: 1 reviews	The rca's are on the passenger side and the power on the driver side. The amp is under the driver sear and the groung is on the bracked where the rear bottom seat goes plugged into, took a bolt off and scratched the hell out of the paint. not sure still what it could be. __________________ Pi Heads, BBk Longtubes, 3.73 Gears, Mac pulleys, CAI, Short shifter, Intrax Springs 13.76 @102.5mph 14.0 @ 99mph npi 12.6 @ 108mph w/75shot

March 9th, 2010, 08:39 PM	#7
maxium Regular 1996 Mustang GT Join Date: Aug 2009 Location: Irvine, CA Posts: 95 iTrader: 0 reviews	Maybe your head unit isn't grounded properly. Is your head unit original or after market?

March 9th, 2010, 08:43 PM	#8
BAD98GT Enthusiast Join Date: Feb 2010 Posts: 949 iTrader: 0 reviews	move your ground. put it by itself and away from other wires that have power in them, also check to see if your rca's are near any wires that send a signal(power). run the rca's a few inches away from other wires, if possible

March 9th, 2010, 08:47 PM	#9
whtstang97 Regular 1997 Mustang Gt 13.76 @ 102.5mph Join Date: Apr 2008 Location: Texas Posts: 111 iTrader: 1 reviews	Kool thanks man, will do. How would I know if the stereo is grounded right? __________________ Pi Heads, BBk Longtubes, 3.73 Gears, Mac pulleys, CAI, Short shifter, Intrax Springs 13.76 @102.5mph 14.0 @ 99mph npi 12.6 @ 108mph w/75shot

March 10th, 2010, 10:02 AM	#12
Blower Head Regular 1996 Mustang GT Vert Join Date: Oct 2007 Location: blaine, MN Posts: 260 iTrader: 1 reviews	Another ground to check is at the wiring for the speakers. I paid a shop to install a stereo for me years ago and had a noise when the headlights were on. It ended up that one of the connections at the speaker were grounding out. That was the last time I paid someone to install a stereo for me! __________________ 96 GT vert, Aftercooled Vortech, Lightning MAF,42# injectors, saleen cams, Bullitt intake, tune by Hitech, Magnaflow catback and O/R xpipe, Cobra brake upgrade, lowered bilstein suspension w/MM c/c plates and subframe connectors 3000 stall and 3.73's

March 11th, 2010, 03:36 AM	#13
whtstang97 Regular 1997 Mustang Gt 13.76 @ 102.5mph Join Date: Apr 2008 Location: Texas Posts: 111 iTrader: 1 reviews	Well today changed everything around, put the ground in a new place, nothing. Tried out new rca because the old one's had a cut in them. nothing. I'm figuring that its the amp that's no good because the buzzing, fuel pump noise is only in the speakers the amp is connected to when I disconnect the amp all the other speakers sound fine. The amp used to do the same thing with some subs but it wasn't as noticeable, right now its the highs and super annoying. Anybody reassure me that it could be the amp or what else do I check? The stereo is grounded, I think. The black wire goes to some connector. Should I just throw the amp away? what do you think? __________________ Pi Heads, BBk Longtubes, 3.73 Gears, Mac pulleys, CAI, Short shifter, Intrax Springs 13.76 @102.5mph 14.0 @ 99mph npi 12.6 @ 108mph w/75shot

March 11th, 2010, 02:26 PM	#14
maxium Regular 1996 Mustang GT Join Date: Aug 2009 Location: Irvine, CA Posts: 95 iTrader: 0 reviews	I wouldn't throw the amp away just yet. Do you have another amp you could try out to eliminate the fact that it's your amp that's messed up or not? Even if it's not a car amp, you could use a home theater amp or something (with a long extension cord) and try that out. (unless you actually have to drive the car to hear the buzz)

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