buzzing sound

**ecjr173** · 08-20-2008 06:14 PM

Not sure what it is but when i drive for about 20-25 miles my car starts to make like a buzzing sound. Sounds like its coming from under my car. Its not really loud but you can hear it enough to start worrying. This just started happening. Any info will help alot. Thanks

**dirtybrd** · 08-20-2008 06:22 PM

Sounds like a heat shield on the exh.

**aaaudiprotein** · 08-20-2008 06:27 PM

Look under your car and see if everthing is ont its place.

**FourRings80** · 08-20-2008 06:38 PM

Did you install an exhaust lately. I installed mine not long ago and a bolt got loose on the cat/DP. If not like dirtybrd says, take a good look at the heat shields with a rubber mallet and gently tap. And if you say a buzzing sound, do you mean more like a humming sound. It could be a fuel filter that needs replacement before the fuel pump gives out.

**dirtybrd** · 08-20-2008 06:51 PM

Good point on the fuel filter.

**Arclight** · 08-20-2008 07:01 PM

+1 on fuel filter. It will get progressively louder if you let it go. It sounds like a hissing, whining noise...

**Turn10** · 08-20-2008 07:29 PM

Recently I got a buzzing noise, but it was coming from my air conditioner. Just a suggestion.

**ecjr173** · 08-20-2008 11:56 PM

I guess more like a humming sound. But again its not very loud and it only happens after i drive for like 20-25 miles and then it will start. I have no mods to the exhaust or engine. My wife drove it a couple of days ago but she heard it as soon as she started the car, and then it went away. If it is the fuel filter what kind of $$$$$ am i looking at for parts and labor, Roughly. And as far as the A/C goes it still does it when the Air is off. Thanks again....

**clcsocal** · 08-21-2008 12:20 AM

I am having the what sounds like the same thing. Sounds like it's coming from under the back seat area. Gets worse when the car gets warm, esp. after sitting in traffic. I was guessing a fuel pump. Changing the fuel filter is a good idea. Is it in-tank, or something I can do myself?

**Arclight** · 08-21-2008 07:18 AM

The fuel filter is located behind the rear passenger tire under a small plastic shield. Parts are about $35-$50 at ECS (gotta have the correct part #). There is a DIY here (search under fuel filter) in the B6section...it will take you about an hour or so w/ a set of jacks stands or ramps.

**ecjr173** · 08-21-2008 11:19 AM

Originally Posted by clcsocal

I am having the what sounds like the same thing. Sounds like it's coming from under the back seat area. Gets worse when the car gets warm, esp. after sitting in traffic. I was guessing a fuel pump. Changing the fuel filter is a good idea. Is it in-tank, or something I can do myself?

YES, i hear it from the back seat and when the car is warm after driving 20 or so miles. OK fuel filter it is. Thanks guys.