[W126 Coupe] Buzzing Fuel Pump

[stefansj at canisius.edu]

Hey Dave, When I replaced the fuel pump it buzzed very loud, after driving for 
the first week or so it seemed to calm down. i also noticed that it buzzes louder 
then usual when I run the car down to very little gas. I don't know, my two 
cents. - Jas

---- Original message ----

>Date: Wed, 27 Feb 2008 07:57:40 -0500

>From: Dick Spellman <spell.yy at verizon.net>  

>Subject: Re: [W126 Coupe] Buzzing Fuel Pump  

>To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

>

>Hi Dave,

>

>If you notice the buzz while sitting in the car and it's either 

>noticeable for the first time or louder since the fuel filter was 

>replaced, it's a good indicator that the pump is at the end of it's 

>life.  Time for a new one. I've also just had them start buzzing loudly 

>as cold weather has set in.  Again time for a new pump.

>

>Dick

>

>DCrawford at tompkinsinc.com wrote:

>> Perhaps someone can give me advice regarding the fuel pump on my "84 

500SEC.

>> I recently had the fuel filter replaced as a part of a routine maintenance

>> visit to my local MB shop.  When I got the car back I discovered the fuel

>> pump was now continuously humming/buzzing.  The shop said it is not 

uncommon

>> for buzzing to occur and that it was not an indicator that the pump was

>> beginning to fail.  At roughly $250 for the pump plus labor, I'd put up with

>> the noise if I were sure it was not getting ready to fail - I do not want to

>> get stuck somewhere in the boonies in the middle of the night.

>>

>> Any opinions about what the best course would be or past experience with 

this

>> type of problem?

>>

>> Thanks for all the help,

>> Dave C

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