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86 560sec-168K -Ext. Light Ivory/Int. Black/01 E320 4Matic Wagon Brl Silver/Black/ Mad '95 Q45
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852 Posts
Discussion Starter #1
I thought it was my disabled hydromatic shocks- was at friends and he said man youfuel pump is buzzing, "u need a new one if it does not go away after changing fuel filter"
filter was changed 5k ago. i got a new one anyway , but it was too hard to do while lieing under car in my driveway.
on Infinities when u get the fuel pump buzz doom is iminent.
I read annother thread that said it is pretty common om MB and not to worry.
the car has 168K
wassup ?????
 

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86 560sec-168K -Ext. Light Ivory/Int. Black/01 E320 4Matic Wagon Brl Silver/Black/ Mad '95 Q45
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852 Posts
Discussion Starter #3
Batou said:
err, i believe it's just the fuel pump.. no big deal.
so i dont have to change it ?? not gonna die in near future ??
 

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1980 380 SE (Euro)
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756 Posts
i don't think so... mines been buzzing for as long as i've known...

you might want to wait for some of the other w126 owners though, i'm not the techie expert ;]
 

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'85 500SEL
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1,829 Posts
The fuel pump does make a noticable buzzing sound

It's location is near the right rear wheel, one of two silver coloured canisters, the top one is the fuel filter, the bottom one is the pump, take a listen there to confirm if it is indeed your fuel pump, which it should be
 

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'80 450SLC Afro RHD Ikonengold
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2,884 Posts
If youre lucky, than yes, pump will buzz happily for long time.

If you ran out of luck... not so long.

Observe changes in noise, specialy when tank is near empty for sign of imminent failure.
 

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86 560sec-168K -Ext. Light Ivory/Int. Black/01 E320 4Matic Wagon Brl Silver/Black/ Mad '95 Q45
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852 Posts
Discussion Starter #8
so that is the pump next to the filter, i guess it is so loud because it is not submerged in a fuel tank or drowned out under the hood from engine noise.
if i did get a new one will the bizzing be less prominent ??
amazing where it is exposed to the elements
 

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Slightly creased
2015 ML 400 x 2
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16,604 Posts
As dave420 says, until there are problems don't worry.

You may get a reduction in noise, it may be the same in which case you will have wasted your $.
 

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w115-240D, w115-300D, w201-190e (3), w123-300D w201-190d
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352 Posts
I had the nasty buzz for over 23000k, it got louder so I eventually changed the pump (was embarrased by the cool car sounding so crass) now it is completely silent from the rear , now I can hear the trans noise .................... !
 
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