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Electrical hum/whirr sound

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Old Jul 26, 2002 | 06:02 PM
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Default Electrical hum/whirr sound

I just started to notice this somewhat high pitch hum/whirr/tone coming from the passenger side of the car. At first i thought it might be the fuel pump. The reason i say electrical is that it changes tone if i place a load on the electrical system - for example, hit up on the power windows when they're already up, and it changes tone; or turn on the defroster on the rear window, or even when i hit the brakes.

One more thing - i only hear it when the car is running... if i turn it off but leave it to where i still can operate the windows, stereo, etc, i dont hear it.

I'm wondering if this is coming from the 'puter in the passenger side, or if i'm hearing the alternator or something... anyone?

Thanks in advance! This forum is the best!!!

-Rich
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Old Jul 26, 2002 | 06:30 PM
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Default Re: Electrical hum/whirr sound (rhawki)

I get this same noise but it comes from over my left shoulder(when im in the drivers seat) I heard that it might be the fuel pump but since yours comes from the passenger side im not sure.
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Old Jul 26, 2002 | 06:47 PM
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Default Re: Electrical hum/whirr sound (F0duncan)

I get this same noise but it comes from over my left shoulder(when im in the drivers seat) I heard that it might be the fuel pump but since yours comes from the passenger side im not sure.
Well, maybe i'm mistaken and the acoustics of the car just make it sound that way, but i'll double check when i get outta work...

Could be i'm just losing it too! :crazy:

-Rich
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Old Jul 27, 2002 | 02:07 AM
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Default Re: Electrical hum/whirr sound (F0duncan)

I get this same noise but it comes from over my left shoulder(when im in the drivers seat) I heard that it might be the fuel pump but since yours comes from the passenger side im not sure.
Turns out it does seem stronger from over my left shoulder, and it's definately not in the passenger side like i originally thought. I'm sure i looked amusing in the driveway, crawling all over with my head popping up and down looking for this noise. :jester

I just must not have noticed it before... so this is a normal sound then? What will it sound like if it's going bad (for future ref.)???

-Rich
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Old Jul 27, 2002 | 05:19 PM
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Default Re: Electrical hum/whirr sound (rhawki)

I may be TOTALLY off base here, but could it be the electric air pump, starts up when the car is started then shuts off about 2 minutes later :)
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Old Jul 27, 2002 | 05:55 PM
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Default Re: Electrical hum/whirr sound (Mean Green 2000)

I had a buzz similar to this and had the right rear speaker replaced..bad amp was the cause...noise went away...
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Old Jul 27, 2002 | 08:53 PM
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Default Re: Electrical hum/whirr sound (rhawki)

Sounds like the fuel pump. Mine does it also from over the left shoulder, but only after I have been running pretty hard.
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Old Jul 29, 2002 | 01:55 AM
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Default Re: Electrical hum/whirr sound (rhawki)

No, it's not the sound you hear at startup (like MeanGreen suggested), i hear it all the time.

Grumpy, did your speaker make this noise all the time or only when the stereo was on?

I'm assuming for now it's just the fuel pump - and i don't really hear it that much since i usually have the windows down or the radio on...

Although, i did see a little silver box in the back left of the car today in that little compartment ('00 coupe). What's that about?

-Rich
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Old Jul 29, 2002 | 06:44 PM
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Default Re: Electrical hum/whirr sound (rhawki)

I had the same noise, with the engine running, sitting still, radio off turn on the turn signals the sound would react to the signals. Turned out to be the fuel pump, I had also been experiencing the low fuel warning with 1/2 tank of gas. the fuel sending unit and fuel pump are combined into one unit. Had it fixed under warrenty. sound gone now. :chevy
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Old Jul 29, 2002 | 08:28 PM
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Default Re: Electrical hum/whirr sound (MilenymC5)

I had the same noise, with the engine running, sitting still, radio off turn on the turn signals the sound would react to the signals. Turned out to be the fuel pump, I had also been experiencing the low fuel warning with 1/2 tank of gas. the fuel sending unit and fuel pump are combined into one unit. Had it fixed under warrenty. sound gone now. :chevy
Hmmm, thats what i was wondering - the factory warranty will be up soon, so if it is the fuel pump... Time to take it back! Unfortunately, they dont seem to hear the same things i do, so i think i'll have to get in the car with the service guy and tell him to turn up his hearing aid :lol:

Thanks MilenymC5

-Rich
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